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3Com 3C15500 - Network Director User Manual

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3C15500

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Part No. DUA1550-0AAA01

Published May 2004

Network Director

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Page 1: User Guide
3Com Network Director ® User Guide 3C15500 http://www.3com.com/ Part No. DUA1550-0AAA01 Published May 2004...
Page 2 All other company and product names may be trademarks of the respective companies with which they are associated. ENVIRONMENTAL STATEMENT It is the policy of 3Com Corporation to be environmentally-friendly in all operations. To uphold our policy, we are committed to: Establishing environmental performance standards that comply with national legislation and regulations.
Page 3 The SUN J2RE software included in this product includes code licensed from RSA Security, Inc. Some portions of the SUN J2RE software licensed from IBM are available at http://oss.software.ibm.com/icu4j/ AdventNet Java SNMP Package Version 1.3.2 Copyright (c) 1998-99 AdventNet, Inc. All Rights Reserved. Portions of this software were derived from the CMP SNMP 1.2U distribution and the following notice applies to the CMU software.
Page 5: Table Of Contents
NBX Call Processors Step Discovery Options Step Scheduled Discovery Step Summary Step Upgrading from 3Com Network Supervisor Coexistence with 3Com Network Director Using saved Network Supervisor maps Using saved 3Com Network Supervisor files The Device Warranty feature Main Features Main Window Network Discovery...
Page 6 What product number is right for me? Key Considerations What if I lose my Activation Key after registration? How do I move my copy of 3Com Network Director to another workstation? If I re-install the product after it has been activated, do I need to...
Page 7 Why can’t I log in to the 3Com support web site? I want to install my upgrade from 3Com Network Supervisor Advanced Package v2.0 to 3Com Network Director on a different workstation. I want to upgrade my copy of 3Com Network Supervisor Advanced Package v2.0 to 3Com Network Director v1.0...
Page 8 Logging VLANs Retry/Timeout Security Help > Contents and Index Menu Option Help > Launch User Guide Help > About 3Com Examples Finding the Product Version Finding the Serial Number, License Number and Activation Key Key Considerations Scheduled Tasks ISCOVERING THE...
Page 9 Other Clouds The Discovery Process – Rediscovery Scheduled Discoveries Components Launching a discovery The Welcome dialog box File > New Tools > Network Discovery with nothing selected Tools > Network Discovery with a discovered subnet selected Tools > Network Discovery with an undiscovered subnet selected The Network Discovery Wizard Discovery Type Pane...
Page 10 Why the discovered map may not exactly reflect the network Some devices haven't appeared Some devices are the wrong type There are clouds in my map Support for 3Com devices Support for third party devices Key Considerations Discovering over slow/expensive links...
Page 11 Pull-Right Menu for Clouds Subnets Device Groups Tooltips Map Item Labels and Address Translation Navigation Panning Zoom in Zoom out Fit to page Shortcut Symbols Navigating Around the Map Using the Tree Viewing the VLANs on Your Network Trace Path Using The Trace Path Wizard Finding Items on Your Network Using Wildcards to Find Partial Matches...
Page 12 Adding a New Device on Your Network Into the Map Useful Information and References Graphical Support for Specific Device Types NBX Network Telephony Solution 3Com Switch 4007 3Com Wireless Access Points Files Associated with Saved Maps Network Login IEWING EVICE...
Page 13 Monitoring State and the Grouped View Monitoring Techniques IP Ping Monitoring SNMP MIB Data Retrieval Service Polling SNMP Trap Receipt Monitor-able Items Monitoring Non-3Com Devices Link Monitoring Components Live Graphs Window Poll Rates Live Graphs Tree Live Graphs Display Displaying Thresholds...
Page 14 Specifying Monitoring Mode in the Discovery Wizard Changing Retry Periods and Timeouts Controlling Event Generation from Monitors Registering 3Com Network Director as an SNMP Trap Destination Configuring the Storage of Monitoring Data Examples Enabling Monitoring on the Core Devices in the Map...
Page 15 3Com Network Director Internal Events Event Severities Information Severity Warning Severity High Severity Events Critical Severity Recurring Severity Event Severity Colors Event Resolution Smart Event Analysis Event Correlation Recurring Event Handling Event Suppression SNMP Trap Filtering Alerts Events List Components...
Page 16 Description Filter Comment Filter Filter Status Bar More Detail Dialog Box Event Tab Graphs Tab Trap Decode Tab Event System Configuration Disabling and Enabling Events Disabled Events Dialog Box Selecting Items Controlling Smart Event Analysis Controlling Global Smart Event Analysis Controlling SNMP Trap Filtering Controlling Per-Event Advanced Settings Setting Thresholds for Monitor-Based Events...
Page 17 Links between a switch/hub and an end station/cloud Database file format Database management Key Considerations Troubleshooting Mapping file not updating Changing the logging data directory Missing data within RRD database files Empty historical report states 3Com Network Director cannot monitor device/link Introduction Key Concepts...
Page 18 Statistics History Host HostTopN Matrix HC-RMON Components 3Com support for RMON The RMONView window The Menu bar The Toolbar The Table View The Graph View Viewing data from the RMON Statistics group Viewing RMON Statistics data for a selected device...
Page 19 How do I graph utilization on a specific VLAN? How do I view the data associated with an aggregated link? Useful Information And References RMON RMON Support on individual 3Com devices RMON Limits on individual devices (for table creation) Key Considerations REATING...
Page 20 Introduction Step Contact Details Step Partner/Reseller Details Step Device Selection Step Summary Step Connection to the 3Com Server What Data is Sent to the 3Com server Reports Web Management Device Warranty Examples Renaming a Switch 4007 using Telnet Disabling a Port on a Switch 4400 using the Web Interface...
Page 21 Troubleshooting The Device Warranty dialog box is not displayed after a Network Discovery 3Com Network Director lists some devices as unregistered, although you have already registered them on the 3Com website Frequently Asked Questions Why are some registered devices missing from the email?
Page 22 Reporting the VLAN configuration of all switches on the network Moving a port to another VLAN Extending your VLANs to include new inter-switch links Creating a new Voice VLAN for 3Com NBX systems Useful Information and References Standards, Protocols, and Related Reading Device support...
Page 23 Reference C ONFIGURATION Overview Key Concepts Configuration Templates Device and Port Selections Components Configuration Editor Dialog Box Configuration Summary Tree Features Feature Configuration Panels Loading and Saving Configuration Templates Selection Editor Dialog Box Editing Device and Port Selections Loading and Saving Device and Port Selections Applying a Configuration Template to a Device or Port Selection Configuration Summary Report Device Configuration Panels...
Page 24 Examples Configuring User Accounts Configuring Network Login Useful Information and References Supported Devices Supported Features by Device Family Key Considerations Potential Hazards when using Bulk Configuration RIORITIZING ETWORK Overview Key Concepts Classification Marking Queuing Dropping Service Levels Configuring the Network for End-to-end Traffic Prioritization Components Prioritize Network Traffic Wizard Configuration Type Step...
Page 25 Useful Information and References User Priority Field DiffServ Codepoint Field Determining Field Values for Applications 3Com Network Director Classifier Rules for NBX Phone Traffic 3Com Network Director Service Levels Configuration Levels for Supported 3Com Devices Key Considerations Resource Warnings Why Errors Can Occur When Adding a Server...
Page 26 ETWORK Overview Key Concepts Multi-Site Networks Local and Remote Sites Issues with Managing a Multi-Site Network 3Com Network Director Support for Multi-Site Networks Configurable Timeouts Configurable Retries Configurable Poll Rates for Active Monitoring Configurable Monitoring Modes Configurable Discovery Options Configurable Monitor Thresholds...
Page 27 NBX S UPPORT Overview Key Concepts How 3Com Network Director Discovers the Phone Network How 3Com Network Director Represents the Phone Network Icons NBX Call Processor Line Cards Analog Terminal Adapter and Analog Terminal Card NBX Phones and Attendant Consoles...
Page 28 Monitoring a Line Card Selecting the Phones Associated with an NBX Call Processor Finding out Which NBX Call Processor is Associated with a Phone Understanding Voice-related 3Com Network Director Events Events related to the NBX Call Processor Events related to phones...
Page 29 Why are there a lot of unconnected phones on the map? The phone was removed from the network The phone cannot be reached The network device the phone is connected to has not been discovered Why are some phones on the map showing the user name, while others show the extension number? How do I change the label of a phone or line card? ACKING...
Page 30 Setup Summary Report Examples Scheduling a Device Backup Operation Restoring to a Replacement Device Deploying a Group of Devices Useful Information and References Supported 3Com Devices Supported Device Parameters Understanding Backup Files Managing Backup Files Key Considerations How Backup Files are Discarded...
Page 31 Updating 3Com Router Manager Useful Information and References Proxy Server Key Considerations The Proxy Settings are not Retrieved Not Enough Space on the Disk Cannot Find the Downloaded 3Com Router Manager Updates on Disk UPPORTED EVICES Bulk Configuration VLAN Configuration...
Page 32 BTAINING UPPORT FOR YOUR Register Your Product to Gain Service Benefits Purchase Value-Added Services Troubleshoot Online Access Software Downloads Contact Us Telephone Technical Support and Repair YSTEM EQUIREMENTS Operating System Web Browser Additional Software Required Hardware EPORT XAMPLES Overview Discovery Report Discovery Report Example Discovery Report Example Content Warnings...
Page 33 DDING ECODES MAC A DDING DDRESS SSH C NTEGRATING AN NDEX 3COM E ENDOR RANSLATIONS LIENT OFTWARE ICENSE GREEMENT...
Page 35: About This Guide
Guide contain details that differ from the information in this guide, follow the information in the release notes. Most 3Com user guides are available in Adobe Acrobat Reader Portable Document Format (PDF) or HTML on the 3Com World Wide Web site: http://www.3com.com/...
Page 36: Conventions
BOUT UIDE Conventions Table 1 Table 1 Notice Icons Table 2 Text Conventions Convention Screen displays Syntax Commands The words “enter” and “type” Keyboard key names Words in italics Table 2 list conventions that are used throughout this guide. Icon Notice Type Description Information note...
Page 37: Feedback About This User Guide
Do not use this email address for technical support questions. For information about contacting Technical Support, please refer to Appendix A Related In addition to this guide, 3Com Network Director provides on-line help Documentation which can be accessed through the application. Document title...
Page 38 BOUT UIDE...
Page 39: Etting Started
Director, how to install and activate the application and a brief summary of all its major features. What is 3Com 3Com Network Director is a standalone application that allows you to Network Director carry out key management and administrative tasks on mid-sized enterprise networks.
Page 40: Installation
Once you have installed 3Com Network Director, you will have a 60-day evaluation period within which to activate your software. When you launch 3Com Network Director for the first time the About dialog will be displayed as shown in Figure...
Page 41: Getting Started
1 Click Activate Now to launch the Activation Wizard. 2 The wizard will ask you for your license key. Enter the key and click Next. 3Com Network Director will then direct you to a 3Com activation website to retrieve your activation key.
Page 42: Creating A New Network Map
NBX Voice Network Step Select Yes, if you have a 3Com NBX voice solution on your network. NBX Call Processors Step Enter the details for any NBX Call Processors on your network. 3Com...
Page 43: Discovery Options Step
130 for more information on the reports that 3Com Network Director generates on a network discovery. Now that you have discovered your network, you can use 3Com Network Director to monitor and manage your network devices. Upgrading from Coexistence with 3Com Network Director...
Page 44: Using Saved Network Supervisor Maps
Director map file location (by default: <Network Director install directory>\maps\my_maps): 2 Copy the following file from your 3Com Network Supervisor map file location into your 3Com Network Director map file location: 3 You should now be able to view and open your saved map files from within 3Com Network Director.
Page 45: Using Saved 3Com Network Supervisor Files
However, any devices already registered with 3Com will be ignored by the 3Com warranty server - re-registering your devices is harmless. You will only have to do this once - 3Com Network Director will remember which devices you have registered using 3Com Network Director itself.
Page 46: Main Features
3Com Network Director. The Main Window also contains the main menu, toolbar and status bar of 3Com Network Director. For more information, see...
Page 47: The Event System
VLAN Support 3Com Network Director can discover and represent all VLANs configured on your network. You can use the 3Com Network Director map to visualize VLAN connectivity on your network or view detailed VLAN information through the Properties dialog for devices or links.
Page 48: Bulk Configuration
The Backup facility allows you to store the configuration of your devices. Setup You can back up large numbers of devices and 3Com Network Director will store them on your computer. The Restore facility allows you to select which configuration to restore to your device. You must have previously saved this configuration for the device.
Page 49: Reporting
Whilst 3Com Network Director provides administration functions that Administration apply to a range of your 3Com devices, you may want specific control of the details on a single device. For this reason, 3Com Network Director provides access to the following specific applications in order to obtain...
Page 50 1: G HAPTER ETTING TARTED...
Page 51: Product Activation
This chapter describes how to activate 3Com Network Director. Once you have installed 3Com Network Director, you can use it for a evaluation period of up to 60 days without activating it. During this time, you have the opportunity to activate the product each time you launch it.
Page 52: Key Concepts
You can launch the About dialog by selecting the menu option Help > About > 3Com Network Director. If 3Com Network Director is still running within its evaluation period, the About dialog automatically displays each time the application is launched.
Page 53: Activation Wizard
Wizard can be launched either by clicking Activate Now on the About dialog, or by clicking Help > Activate Now from the top level menu. Once 3Com Network Director is activated, the Activation Wizard is no longer needed and the Activate Now menu option displays a message...
Page 54 Connect to the 3Com registration web site by clicking Get Activation Key. Enter the activation key you receive from the 3Com web site by typing it in to the Activation Key text box and clicking Finish in the wizard as...
Page 55: Obtaining Product Upgrades
The wizard already knows the product number and serial number so you do not have to type them in. To obtain the activation key for this copy of 3Com Network Director, click Get Activation Key. This launches your default web browser, which displays the 3Com registration web site.
Page 56: Us, Canada And Latin America
3Com network devices. All software upgrades for 3Com Network Director are available for download from the 3Com web site. An active user account is required for access - see below for details on how to purchase access to software upgrades.
Page 57: Useful Information And References
5 Follow the instructions on the registration site to complete the registration of the product and obtain the activation key. 3Com will also send you a copy of your activation key via e-mail. 6 Enter the activation key in the Activation Key text box to activate the product.
Page 58: What Product Number Is Right For Me
Package v2.0 and no longer want to use this software, you can order 3Com Network Director product number 3C15500U from your reseller. If you want to install the 3Com Network Director upgrade from 3Com Network Supervisor Advanced Package v2.0 on a different workstation, refer to “I want to install my upgrade from 3Com Network Supervisor...
Page 59: If I Re-Install The Product After It Has Been Activated, Do I Need To Activate It Again
No - the product activation information is stored on your computer and will remain intact following de-installation and re-installation. My copy of 3Com Network Director no longer runs, even though it has been activated. If you upgraded a major component on your computer, such as the processor, or hard disk driver or if you upgrade your computer’s operating...
Page 60: I Want To Upgrade My Copy Of 3Com Network Supervisor Advanced Package V2.0 To 3Com Network Director V1.0
10 Run 3Com Network Director and click on Activate Now... in the About dialog box - The Activation Wizard will launch. 11 Enter the license key found inside the CD sleeve of your 3Com Network Director software and click Next.
Page 61 This will start the evaluation period, which expires in 60 days. To continue using 3Com Network Director beyond the 60-day evaluation period, you must activate the product: 1 If you have not already done so, order 3Com Network Director from your reseller, product number 3C15500U. For more information on product numbers, see “What product number is right for me?”...
Page 62: Troubleshooting
HAPTER RODUCT CTIVATION 3 Enter the license key found inside the CD sleeve of your 3Com Network Director software and click Next. 4 Click on Activate Now to register 3Com Network Director and obtain your activation key from the 3Com web site.
Page 63 9 Run 3Com Network Director and click on Activate Now... in the About dialog box - The Activation Wizard will launch. 10 Enter the license key found inside the CD sleeve of your 3Com Network Director software and click Next.
Page 64 2: P HAPTER RODUCT CTIVATION...
Page 65: Main Window
Overview This chapter describes the 3Com Network Director main window. The main window provides access to all of the features in 3Com Network Director. This chapter covers the following topics: INDOW Key Concepts Components Examples Key Considerations...
Page 66: Key Concepts
3: M HAPTER INDOW Key Concepts This section describes some 3Com Network Director key concepts relating to the main window. Map Files 3Com Network Director stores device and topology information in map files. Map files have the file extension .map.
Page 67: Components
Components The following section describes the features of the main window and describes the operations you can perform from this window. The map provides a graphical representation of the topology of your network. The map is covered in more detail in Tree The tree displays the devices within your network grouped by subnet and device group.
Page 68: Main Menu
3: M HAPTER INDOW The status bar also provides detailed information about a menu item when it is highlighted. Main Menu The following tables list each menu item for a given main menu and the associated operation invoked by selecting it. File Table 3 operation invoked by selecting it.
Page 69: Edit
“Saving and Opening Maps” page 206 for more information. Locks 3Com Network Director. Prevents other users from accessing 3Com Network Director when you leave your workstation unattended with the application running. For more information see Menu Option” Exits 3Com Network Director. Prompts for a save if the current map has changed.
Page 70: View
3: M HAPTER INDOW Menu Item Edit > Delete Edit > Group Devices Edit > Ungroup Devices Edit > Find Edit > Select All Edit > Select All Core Devices View Table 5 operation invoked by selecting it. Table 5 View Menu Menu Item View >...
Page 71 Menu Item Hot Key View > Annotate Aggregated Links View > Annotate Duplex Mode View > Annotate Resilient Links View > Group Map by Subnet View > Labels > Custom Name View > Labels > User Name View > Labels > DNS Name View >...
Page 72 3: M HAPTER INDOW Menu Item View > Labels > MAC Address View > Background Image > Set Background Image View > Background Image > Scale Background Image View > Background Image > Clear Background Image View > Background Image > Show Background Images View >...
Page 73: Device
See Switch Manager” more information. Launches 3Com Router Manager for the selected router. See Router Manager” more information. Launches 3Com Device View for the selected device. See View” page 475 information. Launches 3Com Network Jack Configuration Manager for the selected device.
Page 74: Monitoring
Launches the Properties dialog box for the selected items. See “Viewing Device Details” page 229 for more information. Operation Starts the monitoring of the selected items by 3Com Network Director. See “Starting and Stopping Monitoring” page 293 for more information.
Page 75: Alerts/Events
Table 9 RMON Menu Components Hot Key Operation Stops the monitoring of the selected items by 3Com Network Director. See “Starting and Stopping Monitoring” page 293 for more information. Launches, or brings to the front, an instance of the Events window filtered to show unresolved events for the selected items only.
Page 76: Tools
3: M HAPTER INDOW Menu Item RMON > Statistics RMON > History RMON > Host RMON > Matrix RMON > Manage RMON Tables Tools Table 10 operation invoked by selecting it. Table 10 Tools Menu Menu Item Tools > Reports Tools >...
Page 77: Help
Help > Launch User Guide Help > Activate Now Help > About 3Com Network Director File > Lock Menu This operation locks the 3Com Network Director user interface and Option prompts for the application password. The password prompt prevents Hot Key Ctrl+T...
Page 78: File > Exit Menu Option
3Com Network Director. File Exit Menu This operation closes 3Com Network Director. The following message will > Option be displayed if there are outstanding changes to the map that need to be...
Page 79 Figure 9 Scheduled Tasks Menu Option The Scheduled Tasks dialog box displays a list of all currently scheduled tasks. Operations that may be scheduled include Device Backup, Agent Update and Network Discovery. Each task has a name, a start time and how often the task repeats (if applicable).
Page 80: Tools Options Menu Option
Instead when you click Finish at the end of the wizard corresponding to the command you are given the choice of: For scheduled tasks to execute, 3Com Network Director must be running. On exiting the application all currently scheduled tasks are cancelled.
Page 81: General
Security — password protection options for 3Com Network Director. Any option set in the Options dialog box applies to all maps opened within 3Com Network Director, not just the map that was open when the option was set. All options are automatically saved, and are retained for future use in 3Com Network Director.
Page 82: Device Management
Figure MAC Addresses — for any MAC address displayed, you can append the manufacturer’s name to the start by enabling the Translate MACs option. For example, 08-00-8F-xx-xx-xx becomes 3Com-xx-xx-xx. This option is disabled by default. See Addresses” page 177 for more information.
Page 83 Components Figure 11 Device Management Tab Choose from Web Management, which is the default, Telnet Management or Administration Application. If a device does not support the preferred Web Management application, Telnet is launched instead. For further information on the Device Management options see “Configuring Single Devices”...
Page 84: Internet
12, allows you to set the following options: Use Web browser settings — this is the default option. If your web browser uses a proxy server to access the Internet, 3Com Network Director will use the same system. Direct connection to the Internet — use this option if your management station connects to the Internet directly through a Local Area Network, without using a proxy server.
Page 85: Discovery
Discovery tab see “Scheduled Discovery Pane” page 124. Figure 13 Discovery Tab Monitoring This tab allows you to select the default global monitoring options that 3Com Network Director applies to devices in the network as shown in Figure...
Page 86: Logging
You may choose to fully disable the history for monitors, or may change the period of time for which 3Com Network Director maintains history. 3Com Network Director maintains a 10-minute monitor history by default.
Page 87 This allows you to review the cause of the event in more detail at a later date. You may choose to fully disable the history for events, or may change the period of time for which 3Com Network Director stores the history. 3Com Network Director stores a 10-minute history before and after events by default.
Page 88: Vlans
3: M HAPTER INDOW VLANs This tab, as shown in Figure 16 VLAN IDs For further information on the VLANs tab see page Retry/Timeout This tab, as shown in retries and the timeout period to use for various types of request when communicating with devices for discovery and monitoring purposes.
Page 89: Security
18, allows you to specify whether 3Com Network Director should request a password when the application is launched. Enabling password protection for 3Com Network Director additionally allows you to lock the application when you leave your workstation unattended with the application running.
Page 90 Remember that passwords are case sensitive. Password required to open application — Enable this option if you would like 3Com Network Director to prompt for the application password whenever the application is launched, and when you explicitly lock the application using the File > Lock menu option. If you enable this option you must also specify an application password using the password field.
Page 91: Help > Contents And Index Menu Option
File > Lock menu option: Figure 19 Password Prompt To access the 3Com Network Director user interface you must provide the application password and click OK. If you forget or lose the password you then will need to reinstall the application.
Page 92: Help > About 3Com ® Director Menu Option
HAPTER INDOW ® Help > About 3Com When you launch 3Com Network Director for the first time, the About Director Menu Option dialog box is displayed. The dialog box shows the product name, product number, serial number and the major version number. Any service packs installed are also listed.
Page 93: Finding The Serial Number, License Number And Activation Key
Figure 21 About Dialog Box - Finding the Serial You have a query about an aspect of 3Com Network Director Number, License functionality and contact 3Com support. The support engineer asks you Number and for your 3Com Network Director serial number, license Number and Activation Key activation key.
Page 94: Key Considerations
Key Considerations The following section provides useful information and advice on the Main Window. Scheduled Tasks When 3Com Network Director is closed, all currently scheduled tasks are cancelled. When the application runs again the tasks will have to be re-scheduled.
Page 95: Discovering The Network
This chapter describes how 3Com Network Director discovers information about your network. Before you can use 3Com Network Director to manage your network you must instruct it to perform a network discovery. This chapter explains the discovery process, and how to tailor it to work best on your network. It also describes any problems you may encounter with the discovery process and the steps you can take to overcome them.
Page 96: Key Concepts
It also finds out more about each discovered device, such as its type and capabilities. The operation is initiated with a list of subnets to discover. Within each subnet 3Com Network Director attempts to locate devices across one or more specific IP ranges. You can control the ranges of devices to be detected within each subnet, but the default behavior is to attempt the full range for each subnet.
Page 97: Ip Ping
HTTP Telnet The most detailed information is generally obtained from devices that support SNMP. For these devices 3Com Network Director initially starts the communication using the read community string as originally specified in the Network Discovery wizard. Having successfully communicated using the read community string it then attempts communication using the write community string(s), again obtained from the Network Discovery wizard.
Page 98: Snmp Type Detection
IP to MAC Resolution This stage is responsible for obtaining the MAC addresses of non-SNMP nodes. For the local subnet, i.e. the one to which the 3Com Network Director PC is attached, this is achieved by reading the ARP cache of the 3Com Network Director PC.
Page 99: Web Type Recognition
SNMP. Many of the phones will not have IP addresses and consequently will not respond to a ping. The NBX chassis contains a non-visible Web page which 3Com Network Director downloads using HTTP. The page provides 3Com Network Director with a list of phones that are associated Key Concepts...
Page 100: Device Sizing
NBX phones can be configured to work with or without an IP address. Those with just a MAC address will be added to the 3Com Network Director map in the same subnet as the NBX chassis, i.e. the subnet currently being discovered.
Page 101: Sizing Stage
The topology process is applied to one subnet (or more specifically multinet) at a time. 3Com Network Director uses the term multinet to describe a situation where more than one subnet is attached to a single router port. This can result in devices on different subnets sharing the same switched infrastructure.
Page 102: Spanning Tree Stage
MIBs, the information displayed about the topology of third party devices will not be as detailed as that of 3Com ones, and sometimes may not be as accurate. Spanning Tree stage Having obtained a list of supported switches, this stage attempts to determine those whose spanning tree links are blocked.
Page 103: Initial Endstation Stage
3Com Network Director may not need to communicate with all switches during this stage. At the end of this stage, 3Com Network Director analyses whether it has enough information to determine the network topology. Remote Poll Stage (directed pings)
Page 104: Outstanding End Station Stage
Tree Building Stage This does not require any device access. It is the point at which 3Com Network Director analyzes all the information it has obtained from the previous stages. It builds a tree view of the subnet/multinet, placing end station devices appropriately.
Page 105 Figure 23 Clouds – Unknown Topology The switch port cannot be physically connected to two end stations, and as such 3Com Network Director inserts the cloud to indicate that there is something missing. In this case the cloud is where the unmanaged hub should be.
Page 106 (since topology information could not be read from it). If a problem was encountered when communicating with the switch you should see an error in the Discovery report produced by 3Com Network...
Page 107: Other Clouds
If all the switches give unit and port details, it is likely that there is another device that should be positioned where the cloud is, but that was not detected by 3Com Network Director. Other Clouds...
Page 108: The Discovery Process - Rediscovery
WAN clouds points of a WAN link to indicate the type of a WAN link that 3Com Network Director detected. This also enables you to apply operations independently to each end of the WAN link. Refer to Network Director On A Multi-Site Network”...
Page 109 Once 3Com Network Director completes its additional discovery it then updates the main database (and subsequently the map) with the newly discovered information. It does this by comparing the information that exists in the main database with that in the new, temporary database.
Page 110: Scheduled Discoveries
When you schedule a discovery from the Network Discovery wizard you are instructing 3Com Network Director to do two things – to do a discovery (with the parameters specified in the wizard) immediately when you exit the wizard, and also to perform subsequent rediscoveries according to your specified schedule.
Page 111: The Welcome Dialog Box
Figure 26 Welcome Dialog Box If you have not yet registered 3Com Network Director and it is still in the evaluation period, the first dialog box you see when launching the application is the About dialog box. Closing this takes you to the Welcome dialog box.
Page 112: Tools > Network Discovery With Nothing Selected
4: D HAPTER ISCOVERING THE ETWORK Tools > Network Discovery with nothing selected With no subnets selected in the tree or map, select Network Discovery from the tools menu. The Network Discovery wizard will be launched at the first pane Discovery Type. Tools >...
Page 113: Tools > Network Discovery With An Undiscovered Subnet Selected
Components Tools > Network Discovery with an undiscovered subnet selected If you have already performed a discovery operation, and a router was detected during that discovery, then it is likely that you will have some undiscovered subnets on your map. These subnets will be those to which the router is directly attached and were not specified in the original discovery.
Page 114: Discovery Type Pane
ETWORK Local subnet – Select this radio button and click Next to discover only the subnet to which the 3Com Network Director PC is attached. The discovery process queries the operating system to determine the subnet mask for the local subnet. The wizard moves onto the Monitor Core Devices and Links pane.
Page 115: Specify Subnets Pane
Specify subnets – Select this radio button and click Next to specify exactly which subnets you wish to discover and also limit the ranges of IP addresses to discover on each subnet. Use the Specify Subnets pane to enter the subnets you want to discover. Specify Subnets Pane This pane is shown if you chose the Specify Subnets option on the first pane of the wizard.
Page 116 You can use the dot ‘.’ key to move to the next segment of an address field. If you wish to limit the ranges of addresses that 3Com Network Directorwill detect for your specified subnet, you must first select the Discover custom ranges radio button and the ranges table and Add button will become enabled.
Page 117 The Retry/Timeout information section of this dialog box allows you to control how long 3Com Network Director waits for a response from a device for the different protocols it uses during discovery and how many times it will retry if it fails to get a response.
Page 118: Editing Subnets In The List
Modify the fields as necessary and select OK to return to the wizard. 3Com Network Director will not allow you to modify the subnet if it conflicts with another one in the list.
Page 119 You can then edit their range and retry/timeout values as normal. 3Com Network Director communicates with the routers on your local subnet in order to populate the above dialog box. It uses SNMP to communicate with the routers and consequently requires their read community strings in order to query them.
Page 120: Importing Subnets From A File
Each field is separated by space or tab characters. If a “#” character appears in a line then 3Com Network Director will ignore that character and any other text that follows it on that line.
Page 121: Monitor Core Devices And Links Pane
If your file contains any errors, 3Com Network Director will display the first error it finds, and then reject the whole file: no subnets will be added to the subnets list.
Page 122: Community Strings Pane
However, you can subsequently enable monitoring on selected devices from the updated map. When 3Com Network Director is not operating in automatic monitoring mode the dialog allows you more advanced control over the monitoring of the discovered subnets. See “Controlling Monitoring Type and Polling...
Page 123 SNMP devices from their factory default settings. In this case, you will need to specify the modified community strings in this pane, otherwise 3Com Network Director will not be able to access them using SNMP. 3Com Network Director attempts to use different community strings in...
Page 124: Nbx Voice Network Pane
4: D HAPTER ISCOVERING THE ETWORK strings to some of your devices (for instance you may have assigned different strings to your routers and switches) then you should add all the entries to the list boxes. If you are rediscovering an existing subnet and haven’t changed the community strings on the devices it contains then there should be no need to specify any additional community strings here.
Page 125 (HTTP) only – they do not support the SNMP protocol. When you access an NCP device with you Web browser you will be asked for a username and password. 3Com Network Director uses the same username and password to obtain information from NCP devices. See page 92.
Page 126: Discovery Options Pane
To filter out devices from the map that are not directly managed by yourself to ensure that your map represents only devices of interest to you. To ensure you do not reach the 3Com Network Director node limit during discovery. “Options Dialog Box - Discovery Tab”...
Page 127 RADIUS servers SNMP-enabled servers Only IP devices As described in the page 92, the topology part of discovery can result in MAC-only nodes being created as a result of the information read from bridge FDB tables. By selecting this option this behavior is disabled. This option will be most effective if you have segregated your devices such that: Connecting devices and important IP devices are within a certain IP...
Page 128: Scheduled Discovery Pane
4: D HAPTER ISCOVERING THE ETWORK Discovery Options and Scheduled Discovery Whenever a Network Discovery is started from the Network Discovery wizard, the settings that you selected in the Discovery Options pane are stored as the default discovery options for the subnets selected for discovery. Subsequent scheduled discoveries will use these settings to restrict the devices that are added to each subnet appropriately.
Page 129 Components Figure 41 Options Dialog Box - Discovery Tab The Discovery tab allows you to specify how discoveries will be scheduled in the future. The options on this dialog box are as follows: Never Select this option to schedule no future discoveries.Note that if there is currently a pending scheduled discovery, and you choose this option, the pending discovery will be cancelled.
Page 130: Summary Pane
4: D HAPTER ISCOVERING THE ETWORK At … Select this option to schedule a discovery for a specific time each day. Alternatively it allows you to specify it to run on specific day of the week or on every week day (i.e. Monday to Friday) Discovery Global Defaults The Discovery Global Defaults pane provides defaults for use in the Network Discovery wizard, Discovery Options pane.
Page 131 Figure 42 Network Discovery Wizard - Summary Pane When you click Finish on this, or any other step of the wizard, 3Com Network Director attempts to start the discovery process, using the options you have specified. If there is a conflicting task currently running, the standard Task In Progress dialog box will be displayed, giving you the option of: Allowing the current task to run to completion.
Page 132: The Network Discovery Progress Dialog Box
4: D HAPTER ISCOVERING THE ETWORK Figure 43 Task in Progress Dialog Box The Network The Network Discovery Progress dialog box is displayed while the Discovery Progress discovery process is running. The process starts when you click Finish on Dialog Box the Network Discovery wizard, or when a scheduled discovery is started.
Page 133 If the discovery was started as a result of a scheduled discovery the dialog box will first appear in its minimized form. In this case a progress bar appears in the status bar of the main window, indicating that it is performing a discovery: Figure 45 Network Discovery Progress Dialog Box - Minimized You can use the Stop button on the status bar to cancel the discovery...
Page 134: Network Discovery Summary Dialog Box
Figure 47 Refresh Toolbar Button Click this button to display the Summary dialog box. The summary dialog box provides you with the following information: Discovery problems: This shows the number of problem conditions, such as timeouts, that 3Com Network Director encountered during the...
Page 135: The Discovery Report
Network Misconfigurations: When the discovery process is complete 3Com Network Director analyses the results in an attempt to establish if any part of your network has been misconfigured. This could be due to the way a device is set up or the way it is connected to another device.
Page 136: Discovery
Warning or Error. For instance, failing to determine the write community string is considered a warning, since, although it is required for other areas of 3Com Network Director it is not essential for discovery. However, a loss of communication is considered an error since it is likely to adversely affect how 3Com Network Director depicts your network.
Page 137: The Changes Report
Initial Map Creation After the first discovery on a new map, 3Com Network Director simply adds all the new devices to the map as it feels appropriate. The map is initially shown at the top-level map of the Grouped Network View. This map shows all the subnets it has detected and any routers it discovered on those subnets.
Page 138: Subsequent Map Updates
If you are not happy with the results you can manually move the nodes yourself or you can force 3Com Network Director to perform a clean layout of the view by selecting View > Relayout Map.
Page 139 Figure 48 Options Dialog Box - Discovery Tab 4 Enter “12:00” into the time field and select “am” within the am/pm drop-down list. Ensure that the day option is selected in the every drop-down list. 12:00 am is midnight and 12:00 pm is midday. 5 Commit your scheduled discovery by clicking OK If you now launch the Scheduled Tasks dialog box from the Tools >...
Page 140 4: D HAPTER ISCOVERING THE Figure 49 Scheduled Tasks Note that by scheduling a discovery this way you need to have already populated your map with any subnets you wish to regularly rediscover. A scheduled discovery cannot be used to discover new subnets. If you haven’t yet done this then you should consider the second option (below).
Page 141: I Have Four Separate Subnets - How Do I Specify Them
I have four separate While 3Com Network Director is capable of automatically discovering subnets - how do I your local subnet and its immediate neighbors, you may only want to specify them? discover selected subnets.
Page 142: One Of My Subnets Is Over A Slow Wan Link - Can I Discover It, And If So What Settings Should I Use
8 You can now click Finish on the wizard if you do not wish to change any of the remaining defaults. Alternatively, continue through the wizard using the Next button. Once you click Finish on the wizard, 3Com Network Director will start discovering your subnets. One of my subnets is...
Page 143: I Am Using Different Snmp Community Strings For Different Devices On My Network - How Do I Specify This
3Com recommends that you set the ranges exactly, particularly as you are about to increase the timeout value. 5 Uncheck the Use defaults from Tools > Options dialog option. The fields below will now become enabled. Increase the appropriately for the speed of your link.
Page 144: Useful Information And References
6 Click Finish if you do not wish to change any of the remaining defaults. Alternatively, continue through the wizard using the Next button. Once you click Finish, 3Com Network Director will discover the devices on your network, using any default community strings, and also attempting to use the ones you specified in the wizard.
Page 145: Some Devices Are The Wrong Type
SNMP requests to the device timed-out. If a device appears as a generic SNMP icon it usually means that 3Com Network Director does not recognize the sysObjectID returned by the device.
Page 146: Support For 3Com Devices
Web-managed devices are not switches or routers. 3Com Network Director uses specific images and text for the different families of 3Com devices that are displayed on the map, and also uses different border types depending upon the device’s capabilities. See Map”...
Page 147: Key Considerations
For third party switches 3Com Network Director reads bridge FDB tables during the topology process. However, it does not attempt to retrieve spanning tree information for these devices. No attempt is made to determine the topology of third party hubs. They will simply be treated as end stations by the topology process.
Page 148: Discovery Report Errors And Warnings
Network Discovery wizard. If 3Com Network Director has to ping lots of addresses that don’t exist, the discovery time can greatly increase as it is waiting for lots of timeouts.
Page 149 Multiple responses were detected during discovery from the IP addresses listed below During the IP Ping stage, 3Com Network Director sends an ICMP ping message to each device IP address in the ranges specified for the subnet it is currently detecting. It does not send ICMP ping messages to the subnet address or broadcast address.
Page 150: Topology Section
3Com Network Director was unable to read the information from the following NBX devices This is due to the fact that 3Com Network Director does not support the version of software running on the NBX unit. A service pack may be available for 3Com Network Director on the 3Com web site that supports this version.
Page 151 It is also possible that the format used to report the version to 3Com Network Director has changed in the most recent versions. In this case you should check the 3Com web site for 3Com Network Director service packs which will support the latest version.
Page 152 During the power cycle (reboot), certain 3Com devices run diagnostic tests against each port and disable any ports that fail these tests. 3Com Network Director is able to detect this condition and will report it here. It will also add an event to the event log for this condition. Because the port has been disabled by the device the topology that 3Com Network Director deduces may be inaccurate.
Page 153 This technique is known as ARP proxy. 3Com Network Director is unable to determine the MAC addresses of devices on the other side of a 3Com SuperStack 3 Firewall, but is able to identify the IP addresses of such devices. As a result, 3Com Network Director may not be able to depict the topology of the network accurately.
Page 154 This situation can arise on some third party devices that do not provide a suitable speed via their MIBs. It may also occur if 3Com Network Director lost communication with the device during Network Discovery, in which case additional errors should appear in this report to indicate the loss of communication.
Page 155: Working With The Map
Overview This chapter describes how to work with the map and tree in 3Com Network Director. The map and tree provide the main interface for viewing and managing your network. They enable you to choose how you want to view your...
Page 156: Key Concepts
This section describes the key concepts of the map and the tree within 3Com Network Director. The Map The map is displayed on the right-hand side of the 3Com Network Director main window. It presents a graphical representation of your network topology for the devices discovered on the network.
Page 157 Director cannot determine an IP address for a device, or when the appropriate SNMP community strings are not supplied to 3Com Network Director in the Network Discovery wizard. The image within the square indicates the type of the device. For more information see Icons”...
Page 158: The Tree
Icon The Tree The tree is displayed on the left-hand side of the 3Com Network Director main window and lists all of the devices that have been discovered in your network, grouped into subnets and device groups. Clouds are not listed in the tree.
Page 159 Key Concepts Figure 53 Example Tree To expand a subnet or device group, click the symbol next to its name. It expands to show the discovered devices. To collapse the subnet or device group, click the symbol next to its name. Each device appears only once in the tree.
Page 160: Components
Submaps — These present logical groupings of the devices on your network. There are two types of submap: Subnets — are automatically created by 3Com Network Director during Network Discovery, and allow you to view the network broken down into separate IP subnets. Each subnet contains all devices with related IP addresses.
Page 161 Figure 54 Subnet Example Device groups — allow you to manually group together similar devices, to allow you to represent your network more intuitively. Figure 55 Device Groups Example Components...
Page 162: The Ungrouped Network View
When you choose to view the devices in your network without grouping Network View them by subnet, 3Com Network Director displays the layer-2 (physical) topology of your network in a single top-level map containing all of the devices discovered on your network. This view does not show:...
Page 163 3Com SuperStack 3 family Power over Ethernet device 3Com SuperStack II family device 3Com Switch 7700 3Com Switch 4007R 3Com Switch 4005 Other 3Com chassis devices, such as the 3Com Switch 4007 3Com Network Jack 3Com OfficeConnect family device 3Com AirConnect Access Point...
Page 164 5: W HAPTER ORKING WITH THE Device Icon Table 14 NBX Networked Telephony Solution Icons Telephony Solution Icon Description 3Com Wireless LAN Access Point All other network infrastructure devices Description NBX network call processor NBX line card IP telephone Analogue telephone...
Page 165: Pull-Right Menu For Devices
Table 16 Devices Pull-Right Menu Options Menu Item Operation Start Monitoring Starts the monitoring of the selected map items and links by 3Com Network Director. See Monitoring” Stop Monitoring Stops the monitoring of the selected map items and links by 3Com Network Director. See Monitoring”...
Page 166 Launches the web interface for the selected device. See Management” device. See “Telnet information. Launches 3Com Switch Manager for the selected switch. See “3Com Switch Manager” Launches 3Com Router Manager for the selected router. See “3Com Router Manager” Launches 3Com Device View for the selected device. See “3Com Device View”...
Page 167: Physical Links
Where two or more physical links exist between the two map items in question, the line is drawn with the same thickness as a 1Gbps speed link. This may occur, for example, with a 3Com Switch 4007 that has an Enterprise Management Engine (EME) module if it links to another device both from the EME and from a switching module.
Page 168: Unvalidated Links
5: W HAPTER ORKING WITH THE Unvalidated Links Some links in the map represent links that are unvalidated. Unvalidated links can occur when a rediscovery of a subnet fails to find a link that existed previously, or when you manually add a link to the map. A link remains unvalidated until a rediscovery verifies the existence of the link.
Page 169: Spanning Tree Protocol Support
Spanning Tree State Spanning Tree Protocol Support 3Com Network Director monitors the spanning tree state of links in your network for which the spanning tree protocol is enabled. The map is dynamically updated to show which links are currently disabled by spanning tree protocol using the annotation indicated above.
Page 170: Layer-3 Connections
5: W HAPTER ORKING WITH THE Menu Item Attach Alerts View Filtered Events RMON > Statistics RMON > History Launches the History View dialog box for the selected link. See RMON > Host RMON > Matrix Launches the Matrix View dialog box for the selected link. See RMON >...
Page 171: Clouds
Figure 57 A Layer-3 Connection Logical connectivity is due to the device having one or more IP addresses on the subnet in question. Pull-Right Menu for Layer-3 Connections Right-clicking on a layer-3 connection in the map produces a pop-up menu. The following table describes each of the menu items in the pop-up.
Page 172 The links attached to the cloud belong to two or more families. None, or not all, of the families are commonly used for WAN communications. “There are clouds in my map” “Monitoring the “Using 3Com Network Director On page 681. “Adding Items...
Page 173: Pull-Right Menu For Clouds
cloud should appear in a particular submap or the top-level map is based upon the devices that are connected to it: A cloud will appear in a submap if it is connected to one or more devices that are present in that submap. A cloud will appear in the top-level map if it is only connected to a single device, and that device is a router or layer-3 switch.
Page 174 Figure 58 Subnet Icon’s Name Undiscovered Subnets If 3Com Network Director discovers a device that has an IP interface on a subnet that 3Com Network Director has not recognized, then an undiscovered subnet icon will be added to the top-level map and linked to the device.
Page 175 Table 22 Subnets Menu Options Menu Item Operation Start Monitoring Starts the monitoring of the selected items by 3Com Network Director. See page 293 Stop Monitoring Stops the monitoring of the selected items by 3Com Network Director.
Page 176: Device Groups
Menu Item Properties 3Com Network Director applies intelligent filtering to ensure that an operation applied to a subnet will apply to all items in the subnet that can meet the requirements of the operation. This gives you a convenient way to apply operations to a complete IP subnet, without having to manually select individual items.
Page 177 Table 23 Device Groups Menu Options Menu Item Operation Start Monitoring Starts the monitoring of the selected items by 3Com Network Director. See page 293 Stop Monitoring Stops the monitoring of the selected items by 3Com Network Director. See page 293 What’s Wrong...
Page 178: Tooltips
Properties Operations applied to a device group will apply to all devices contained within the device group. 3Com Network Director will intelligently filter out any items from the selection which don't make sense in the context of the requested operation. This gives you a convenient way to apply operations to all members of a device group, without having to manually select individual items.
Page 179: Map Item Labels And Address Translation
The label selected affects the display of all map items in both the map and the tree, and also affects the display of tooltips for all map items. The sources that 3Com Network Director uses to obtain each label for a particular map item are described in the following table:...
Page 180 System Name IP Address MAC Address If 3Com Network Director is unable to obtain a label of the type you have selected, then it will use the first label that it is able to locate (using the Label Source Manually specified. For more information about how to set the...
Page 181 Components order in Table 25). For example, 3Com Network Director will not be able to determine the User Name for a cloud, and so will use the Custom Name if it is set, or the System Name otherwise. Vendor Translation of MAC Addresses The MAC address of a device is divided into two 24-bit halves.
Page 182 5: W HAPTER ORKING WITH THE Figure 61 MAC Address label display (2) By default, the automatic translation of the OUI of MAC addresses is turned off. To toggle this feature on or off, launch the Tools Options > dialog box and, from the General tab, set the Translate MACs option:...
Page 183 OUI to vendor name to perform this translation. As new OUI values are assigned to vendors on a regular basis it is possible that 3Com Network Director will not have a mapping for a particular device in your network. In such a case 3Com Network Director will simply display the full MAC address.
Page 184 5: W HAPTER ORKING WITH THE Selecting Items in the Map and Tree In order to select an item in the map or the tree single-click on its icon. This will select the item both in the map and in the tree. To add additional items to the selection you can then press and hold the Ctrl key while single-clicking on the other items that you wish to add to the selection.
Page 185 Components Figure 63 Selecting Multiple Map Items For the purposes of selection, a map item is considered to be within the selection rectangle if it is either wholly contained within the selection rectangle, or if the selection rectangle overlaps with its icon. Note that this method of selection does not include links in the selection.
Page 186: Navigation
3Com Network Director centers these items on the page and zooms in. If there are no items selected in the currently viewed submap, then 3Com Network Director zooms in directly towards the center of the currently displayed area of the submap.
Page 187: Zoom Out
Table 26 Toolbar Zoom Buttons Button In addition to these methods of zooming in and out of the map, 3Com Network Director provides a method for directly selecting the area of the map that you wish to view. This is similar to the selection rectangle described in “Selecting Multiple Map Items in the Currently Viewed...
Page 188 5: W HAPTER ORKING WITH THE Unlike the selection rectangle, which may have any proportions, the zoom rectangle keeps the proportions of the map display area to indicate the complete area that will be visible when you release the mouse button.
Page 189 The title bar for 3Com Network Director indicates which submap you are currently viewing by listing details at the end of the title. The details...
Page 190: Shortcut Symbols
However, provided one of the devices is visible in the submap, 3Com Network Directorcan still draw the physical link between the two devices using a shortcut symbol to represent the other device.
Page 191: Navigating Around The Map Using The Tree
Where the device that a shortcut represents exists on more than one submap, 3Com Network Director selects one of these for the shortcut to link to. This is the submap represented by the text in parentheses shown after the shortcut label.
Page 192: Viewing The Vlans On Your Network
To zoom to a device in the map, double-click on its entry in the tree. 3Com Network Director navigates to the submap that the device is listed under, centers the device within the display, and zooms in on the device.
Page 193 Components Figure 66 Trace Path Example If you launch Trace Path without first selecting the two devices that you want to find the physical paths for, the toolbar is launched alongside the wizard. However, the toolbar buttons are only enabled once you have completed the selection of the two devices that you want to find the physical paths for within the wizard.
Page 194 5: W HAPTER ORKING WITH THE Table 30 Previous and Next Path Buttons Button Changing the displayed path changes the path that is highlighted in the map. Using the Filtered Trace Path View Trace Path also provides a separate filtered view that shows only those map items included in the currently viewed path.
Page 195: Using The Trace Path Wizard
Components When you change the viewed path in the filtered Trace Path view, the devices that form the path, or the order in which the devices are displayed in the path, may change. As a result some devices may be removed from the view, others may be added and the layout may change.
Page 196: Finding Items On Your Network
5: W HAPTER ORKING WITH THE results table. In this situation, you may either select the device to use as one of the end points of the path from the results table and click Next to use it, or click Back and enter new search criteria. If you have only one device selected when you select Tools >...
Page 197: Using Wildcards To Find Partial Matches
To find items on your network from within the Find dialog box, simply select appropriate Search Criteria to locate the required items, and click the Find button. 3Com Network Director will then examine the contents of the map and list the items that match your selected search criteria in the results table.
Page 198: Searching Within The Search Results
Table 31 Wildcard Characters For example: If you do not enter a value to search for then 3Com Network Director will treat this as if you have entered a * wildcard character. You can use this feature to find all items that have the attribute specified in the Search by: option.
Page 199: Using The Find Dialog Box To Select Items For Operations
Using the Find Dialog Box to Select Items for Operations There are various operations in 3Com Network Director for which you must first select a list of items to perform the operation on before you may proceed, such as selecting a list of devices that are to have their configuration backed-up, or selecting a list of links to disable an event for.
Page 200 5: W HAPTER ORKING WITH THE Search by: Option address Device type Finds devices of a specific type. VLAN Software version Serial number Product number Description Finds devices that have a MAC address that matches the entered MAC address. You may use wildcards in any of the six fields of the MAC address. If you use wildcards, or leave one or more fields of the MAC address blank, and a device has more than one MAC address that matches the entered MAC address then the device will be listed multiple times in...
Page 201: Finding Links
You may use wildcards in the value that you enter in the Device Name: field. Media type Finds links of a particular media type. You may select the media type to search for from a list of the media types supported by 3Com Network Director. Components...
Page 202: Finding Nbx Telephony Components
5: W HAPTER ORKING WITH THE Search by: Option Speed Duplex mode Spanning tree mode Aggregated link Resilient link VLAN Comment Finding NBX Telephony Components The Find: NBX Telephony Components option allows you to find NBX telephony components on your network. NBX telephony components include such devices as NBX call processors, line cards and NBX phones.
Page 203 Table 34 Find: Links, Search by: options Search by: Option Description Name Finds NBX telephony components whose Custom Name, DNS Name or System Name matches the entered name. You may use wildcards in the value that you enter in the Name: field.
Page 204: Modifying The Map Layout
However, the layout chosen by 3Com Network Director may not be exactly as you require, as it does not take account of such factors as geographical location, logical function and so on.
Page 205 3Com Network Director will automatically relayout those map items too. Otherwise, 3Com Network Director will warn you that it has not performed a full relayout:...
Page 206: Manually Modifying The Map Contents
Relaying out the entire map will generally result in a better map layout. Manually Modifying the Map Contents By default the map only displays devices that 3Com Network Director has itself discovered on your network. In some instances you may wish to add map items to represent logical entities, or devices not present in the discovered network.
Page 207 To do this, launch the Properties dialog box for each of the map items. In particular, you may wish to set the IP address for a device. Doing so will cause 3Com Network Director to interrogate the device to determine as much information about it as it can, including changing the device's icon to represent it as accurately as possible.
Page 208: Linking Items In The Map
If you delete an map item or link from the map that is still present in your network and then subsequently rediscover the portion of network that the map item or link is on then 3Com Network Director will rediscover that map item or link and add it back into the map.
Page 209: Keeping The Map Up-To-Date
3Com Network Director can dynamically track the users who are logged Login Support in on your network. In order for 3Com Network Director to do this, the users’ end stations must be connected to 3Com switches that have Network Login functionality enabled.
Page 210: Saving And Opening Maps
Saving the map stores all of the information about the current map to a set of map files. These include such information as: If you choose to either exit 3Com Network Director or open another map, 3Com Network Director may prompt you to save the map. This will occur...
Page 211 Components Once you have saved a map you can exit 3Com Network Director, or use another map, and then later restore the saved map at the point where you saved it. To restore a saved map select File Open and locate the map >...
Page 212: Exporting Maps To Microsoft Visio
Exporting Maps to 3Com Network Director allows you to export your network map to   ...
Page 213 Components Export to Visio Dialog Box Figure 75...
Page 214: Printing The Map
Figure 76 Print Map Dialog Box If you require a printout that includes the devices labels, 3Com recommends that you export the map for use in Microsoft® Visio®, and use Microsoft® Visio® to print the map.
Page 215 Components launches the Scale Background Image dialog box, which allows you to select how the size of the image should be determined. Figure 77 Scale Background Image Dialog Box If you subsequently wish to resize the background image for the currently viewed submap, select View >...
Page 216: Examples
5: W HAPTER ORKING WITH THE If you have cleared the View > Background Image > Show Background Images toggle in order to temporarily hide background images and subsequently set or resize a background image for a submap, the toggle will automatically be re-enabled, turning on the display of background images again.
Page 217 Figure 79 The Search by: List 4 Select 3Com Switch 4400 from the Device type: list. Figure 80 Selection on the 5 Click Find to search for the devices, and wait until the search has completed. Device type: List Examples...
Page 218 5: W HAPTER ORKING WITH THE Figure 81 Search Results Table 6 Select a row in the results table and then press Ctrl + A to select all of the SuperStack Switch 4400 devices in your network. Figure 82 Devices Selected 7 Select Tools >...
Page 219: Viewing All Of The Physical Connections For A Router
Viewing all of the You are currently viewing the devices in your network grouped by subnet Physical Connections and need to see all of the physical connections for a particular router that for a Router is logically connected to multiple subnets. 1 Toggle the View view the devices without grouping them by subnets.
Page 220 5: W HAPTER ORKING WITH THE Figure 84 Double-Clicking on a Router in the Tree...
Page 221: Focusing In On A Set Of Devices In The Map
Focusing in on a Set You are viewing the devices in your network grouped by subnet, are in of Devices in the Map the top-level map, and wish to focus in on the servers on a particular subnet. 1 Double-click, either in the map or in the tree, on the subnet that the servers are in.
Page 222 5: W HAPTER ORKING WITH THE Figure 86 Selection of Multiple Servers 3 Click on the Zoom in button in the toolbar. This centers the display around the selected servers and zooms in: Figure 87 Zooming In...
Page 223 Examples 4 Repeat click on the Zoom in button in the toolbar until the servers are at the level of magnification desired: Figure 88 Adjusting the Magnification...
Page 224: Adding A Link Between Map Items From Different Submaps
5: W HAPTER ORKING WITH THE Adding a Link You are viewing the devices in your map grouped by subnet, and you between Map Items wish to add a link between two devices that are on different submaps. from Different Submaps 1 Locate the two devices in the tree, select the first one with a single-click and the second one with Ctrl + click.
Page 225: Adding A New Device On Your Network Into The Map
Examples Figure 90 Selecting Edit > Add Link It is not necessary for either of the devices to be visible in the display in order to link them in this way. Adding a New Device You have just connected a new stackable switch to the network, and on Your Network Into wish to add it into the map so that you can manage it.
Page 226 5: W HAPTER ORKING WITH THE If you are viewing the devices in your network grouped by subnet then you need to locate and navigate to the subnet that the new switch is present on, so that the device is present in the correct submap. 1 Find the submap in the tree and double-click on it to open the submap.
Page 227 Examples Figure 92 Selecting Edit > Add Map 3 Click and drag the stackable switch icon across into the location in the map where you wish the switch to be placed and drop the icon there. Figure 93 Moving the Stackable Switch Icon...
Page 228 5: W HAPTER ORKING WITH THE 4 Having added the switch, close the Add Map Item dialog, right-click on the new icon and select Properties from the pull-right menu. Figure 94 Selecting Properties Use the Properties dialog to set the IP address of the new device. For more information about how do this see “Setting the IP Address for a Manually Added Device”...
Page 229: Useful Information And References
3Com Switch 4007 If you have an Enterprise Management Engine (EME) installed in your Switch 4007 chassis, 3Com Network Director will treat the EME as a blade within the chassis for presentation purposes. As a result, the EME will not be represented as a separate icon on the map, and the Switch 4007 icon will be shown linked to the device that provides the EME with it’s network connection point.
Page 230: Files Associated With Saved Maps
For more information see Files Associated with Saved Maps When a map is saved, 3Com Network Director actually creates or updates three files to contain the contents of that map. The three files are named based upon the name you choose, and are as follows:...
Page 231: Network Login
3Com switches. This feature combines the IEEE 802.1X protocol for port control and RADIUS for authentication. IEEE 802.1X specifies how to have ports on an access point (e.g. a 3Com switch) restrict access to a connected end station.
Page 232 It is used as part of 3Com’s Network Login and Switch Login features. Switch Login is a feature which stores the TELNET and web username and password details for a 3Com switch on a RADIUS server, rather than local to the switch.
Page 233: Viewing Device Details
Specify custom information such as Custom Name and Comments for the items on the network map. Change the community strings that 3Com Network Director uses for an individual device, or for several simultaneously. Modify the monitoring options for an individual device, or for several simultaneously.
Page 234: Key Concepts
This section outlines the key concepts of working with the Properties dialog box in 3Com Network Director. Items Supported by 3Com Network Director can display the properties of any item on the the Properties Dialog network map. This includes: Components...
Page 235: Structure Of The Properties Dialog Box
To do this: 1 Select the item(s). You can do this by: 2 Using the Device > Properties menu option, or right-clicking on the item’s icon on the map and selecting the Properties menu option. Refer to to find and select map items. Structure of the The Tabbed Pane Properties Dialog Box...
Page 236 List of IP and MAC addresses for the item. Security settings for the item, such as the community strings that 3Com Network Director should use to communicate with the item. Information regarding the ports at each end of the link.
Page 237: The Device Tree
Monitoring settings for the item, such as the use of SNMP traps. Retry/Timeout Information regarding the retry and timeout settings used by 3Com Network Director when communicating with the device. The Device Tree If the selected map item is a networking device, the left-hand side of the...
Page 238 6: V HAPTER IEWING EVICE Figure 99 The Device Tree The tree presents the structure, as units/slots and ports, of the selected device. The device tree lists the following: ETAILS Device — this is the root of the tree. It represents the whole device. The label displayed in the tree corresponds to the label displayed on the network map such as Custom Name, System Name, IP Address, etc.
Page 239 The unit index within the stack and the type of unit. The slot index within the chassis and the type of blade. Port — this is displayed under the device tree node if the device consists of only one unit, or under the unit tree node if there are several units within the device or the device is a chassis.
Page 240: Properties Dialog Box For A Node
Security VLANs Monitoring Retry/Timeout For a MAC-only device, the Monitoring tab will show No monitoring is available because 3Com Network Director cannot monitor a MAC-only device. ETAILS shows the tabs that are displayed, and the contents of these Contents General information regarding the node, such as name, type and system information.
Page 241: Properties Dialog Box For A Supported Device
Properties Dialog Box If the map item is a device supported by 3Com Network Director, the for a Supported Properties dialog box shows a tree on the left-hand side of the dialog Device box, with the tabbed pane on the right-hand side of the dialog box.
Page 242: Supported Device (Stack Or Chassis)
6: V HAPTER IEWING EVICE Table 40 Tabs for an Aggregated Link Tab Title General Power over Ethernet VLANs Supported Device If the device is a stack or a chassis device, the tree on the left-hand side of (Stack or Chassis) the dialog box shows the device, the units/slots on the device, the ports on each unit/slot and the ifIndices and aggregated links on the device, as shown in...
Page 243: Supported Device (Single Unit)
Figure 100 Properties Dialog Box for a Supported Device (Stack or Chassis) Select the unit/slot in the tree to view the properties for that unit/blade. The tabs available for a unit/slot are shown in Table 41 Tabs Available for a Unit/Slot Tab Title General Addresses...
Page 244: Properties Dialog Box For An Unsupported Device
That tab shows the information in the same format as the General tab for a unit. See Table Properties Dialog Box 3Com Network Director cannot list the units, interfaces or ports within a for an Unsupported device that it does not support. For this reason, there is no tree on the Device...
Page 245: Properties Dialog Box For An End-Station
Unknown indicating that 3Com Network Director could not get the information). Properties Dialog Box End-stations usually consist of a single port, so 3Com Network Director for an End-Station does not show a tree on the left-hand side of the dialog box, as shown in Figure 103.
Page 246: Properties Dialog Box For A Phone
Because end-stations are usually unmanaged, some information might be missing. Whenever information is missing, 3Com Network Director shows N/A indicating that it is not applicable or Unknown indicating that 3Com Network Director could not get the information. If the NBX pcXset software (softphone application) is running on the end-station, the Phone tab is also available.
Page 247 Phone information: Extension number, location Because phones are unmanaged, some information might be missing. Whenever information is missing, 3Com Network Director shows N/A indicating that it is not applicable or Unknown indicating that 3Com Network Director could not get the information. Components...
Page 248: Properties Dialog Box For A Subnet
General and custom information for the subnet, such as custom name, subnet address, comments, etc. network discovery. Monitoring settings for the subnet, such as the use of SNMP traps. Information regarding the settings used by 3Com Network Director when communicating with the devices in the subnet. Table...
Page 249: Properties Dialog Box For A Device Group
Properties Dialog Box The Properties dialog box for a device group consists of a single General for a Device Group tab, as shown in Figure 106 Properties Dialog Box for a Device Group The General tab shows the following information: Properties Dialog Box The Properties dialog box for a cloud consists of a single General tab, as for a Cloud...
Page 250 6: V HAPTER IEWING EVICE Figure 107 Properties Dialog Box for a Cloud The General tab shows the following information: The type of the cloud is determined from the media types of the network interfaces connected to it: ETAILS Custom Name — the custom name of the cloud. Type —...
Page 251: Properties Dialog Box For A Link
Properties Dialog Box This section describes the Properties dialog box for the various types of for a Link links. Properties Dialog Box for a Non-WAN Link The Properties dialog box for a non-WAN link between two nodes consists of a tabbed pane. There is no tree on the left-hand side, as shown in If the connected interfaces are of different media types, but are all of media types that are commonly used for WAN communications then...
Page 252 6: V HAPTER IEWING EVICE Figure 108 Properties Dialog Box for a Non-WAN Link The tabs available for a link are shown in Table 43 Tabs Available for a Non-WAN Link ETAILS Tab Title Contents General General information for the link, such as speed, duplex mode, etc.
Page 253: Properties Dialog Box For A Wan Link
Properties Dialog Box The Properties dialog box for a WAN link consists of a tabbed pane. There for a WAN Link is no tree on the left-hand side, as shown in Figure 109 Properties Dialog Box for a WAN Link Tab Title Contents Power over Ethernet Information regarding the power over Ethernet settings...
Page 254: Properties Dialog Box For A Layer-3 Connection
6: V HAPTER IEWING EVICE The tabs available for a WAN link are shown in Table 44 Tabs Available for a WAN Link Tab Title General Ports VLANs Monitoring Monitoring settings for the link, such as the use of SNMP traps. Properties Dialog Box The Properties dialog box for a Layer-3 Connection consists of a tabbed for a Layer-3...
Page 255: Properties Dialog Box For A Multiple Selection
Figure 110 Properties Dialog Box for a The tabs available for a link to a subnet are shown in Table 45 Tabs available for a Layer-3 Connection Tab Title General Properties Dialog Box When multiple items are selected on the map and the Properties dialog for a Multiple box is launched, no tree is available on the left-hand side.
Page 256 6: V HAPTER IEWING EVICE Figure 111 Properties Dialog Box for a Multiple Selection The tabs shown in the tabbed pane depend upon the items that have been selected: For example, if three links are selected, one of which is an aggregated link, and the Properties dialog box is launched then the General, Ports, VLANs and Monitoring tabs will be displayed;...
Page 257 Figure 113 shows a section of the General tab for two devices of the same type (3Com SuperStack 3 Switch 4226T). The Type and Product Number are the same for both devices, so the actual value is displayed for both the Type and Product Number fields. However, the Serial Number is different for the two devices, so the value for Serial Number shows multiple values.
Page 258: This Section Describes How You Can Apply Changes To Items With The Properties Dialog Box
To specify comments: 1 Click on the icon for the item in the 3Com Network Director map to select it. 2 Select the Device > Properties menu option to launch the Properties dialog box.
Page 259: Setting The Ip Address For A Manually Added Device
To specify the IP address for a manually added device: 1 Click on the icon for the device in the 3Com Network Director map to select it. 2 Select the Device > Properties menu option to launch the Properties dialog box.
Page 260 Figure 115 Cannot Contact the IP Address Specified Assigning an IP address to a manually added device only defines the IP address that 3Com Network Director uses to communicate with the device – it does not assign the IP address to the device itself.
Page 261: Setting The Port Numbers For A Manually Added Link
To specify port information for a manually added link: 1 Click on the icon for the link in the 3Com Network Director map to select 2 Select the Device > Properties menu option to launch the Properties dialog box.
Page 262: Changing The Community Strings For A Device
This can be useful if a device has had its community strings changed since it was first discovered and you want to change the community strings that 3Com Network Director uses so that you can continue to monitor it, or if a new device has been manually added to the 3Com Network Director map and you want to specify the community strings that should be used to communicate with it.
Page 263 To change the community strings on a device: 1 Click on the icon for the device in the 3Com Network Director map to select it. 2 Select the Device > Properties menu option to launch the Properties dialog box. 3 Select the Security tab. This shows the tab shown in 4 If you do not want to use the default community strings for that device, click the Specify option.
Page 264 6: V HAPTER IEWING EVICE ETAILS Figure 117 Security Tab for a Device...
Page 265: Changing The Monitoring Settings
Components Figure 118 Community Strings Not Accepted Once the changes are applied 3Com Network Director uses the new community strings to communicate with the device. Changing the community strings for a device only changes the community strings that 3Com Network Director uses to communicate with the device, it does not change the community strings on the device itself.
Page 266: Changing The Retry And Timeout Settings For A Device Or Subnet
The retry and timeout settings for a device allow you to tune the and Timeout Settings communications between 3Com Network Director and the device so that for a Device or they can cope with slow or unreliable links. For example, a slow WAN...
Page 267: Changing The Discovery Options For A Subnet
Retry/Timeout tab of the Properties dialog box: Figure 120 Retry/Timeout tab of the Properties dialog box The use of retry and timeout settings in your network, and how to change them, is covered in detail in “Using 3Com Network Director On A Multi-Site Network” page 681.
Page 268: Examples
The following section details examples of using the Properties dialog box. How Do I View the Properties of a Specific Port on a Device? You want to check the settings of port 5 on slot 4 of your 3Com Switch 4007.
Page 269 To View the Properties for that port: 1 Click on the icon for your Switch 4007 on the map to select it. 2 Select the Device > Properties menu option to launch the Properties dialog box. 3 To expand the tree and display all the ports on Slot 4 of your Switch 4007 click on the + sign beside the tree branch corresponding to Slot 4 on the left-hand pane of the dialog box.
Page 270 To change the community strings for all devices in a subnet: 1 Click on the icon for the subnet in the 3Com Network Director map to select it. 2 Select the View > Enter Submap menu option to display the contents of the subnet.
Page 271 7 Enter the new community string in the Read and Write sections. 8 Click OK to validate your changes. 3Com Network Director now uses the community strings you specified to communicate with the selected devices. Figure 123 Security Tab for Multiple Devices...
Page 272 You want to check the version of the software running on your 3Com switch. To see the software version running on your switch: 1 Click on the icon for the switch in the 3Com Network Director map to select it. 2 Select the Device > Properties menu option to launch the Properties...
Page 273: Key Considerations
1 Click on the icon for the device in the 3Com Network Director map to select it. 2 Select the Device > Properties menu option to launch the Properties dialog box.
Page 274 HAPTER IEWING EVICE It is also possible that the SNMP requests that 3Com Network Director uses to communicate with the device timed out. If this is the case then the Discovery report will indicate that this problem occurred during discovery. For more information on this report see Report”on...
Page 275 It usually takes at least one minute for 3Com Network Director to carry out those changes.
Page 276 6: V HAPTER IEWING EVICE ETAILS...
Page 277: Monitoring The Network
Overview This chapter describes how 3Com Network Director can be used to monitor the status of the devices and links within your network. Monitoring the status of devices and links within your network allows you to identify possible bottlenecks or trouble spots in the network before they cause a major impact, and can be used to assist in troubleshooting when issues arise.
Page 278: Monitoring And Event Generation
356. Monitoring State 3Com Network Director indicates the monitoring state of each monitored device by coloring the background of its icon in the map and its node in the tree using one of red, yellow or green.Similarly, the monitoring state of each monitored link is indicated by drawing the link in the map in red, yellow or green, rather than in black.This allows you to see at a glance...
Page 279 Figure 124 Example of how the Monitored State is Displayed on the Map The color of a monitored item represents the highest severity unresolved event for that item, as shown in the table below: Table 46 Map Item Color Key Color Description There are unresolved events for the item and the highest has a...
Page 280: Monitoring State And The Grouped View
Monitoring 3Com Network Director uses various techniques to monitor the state of Techniques devices and links within your network.The techniques used for a...
Page 281: Ip Ping Monitoring
SNMP MIBs.When 3Com Network Director is monitoring a device or link using an SNMP MIB-based monitor, 3Com Network Director uses SNMP v1 to request particular MIB values on a regular basis.The information returned from the device’s MIB is then used,...
Page 282: Service Polling
Director monitors a service by connecting to and sending a request to the service on a regular basis.The response received, or the lack of any response, is used by 3Com Network Director to update the state of the monitor. Depending upon the service being monitored, the monitor may be able to use the response to determine more than just the responsiveness of the service i.e.
Page 283: Monitor-Able Items
If an SNMP trap is received that does not have a monitor associated with it then 3Com Network Director will use the trap to generate an event directly.For more information see Director registers itself with SNMP trap sources as an SNMP trap destination.
Page 284: Components
If you stop monitoring on the device that has been selected as the data source for the link then 3Com Network Director will automatically switch across to using the device at the other end of the link as the data source.
Page 285: Poll Rates
When the Live Graphs window is displayed for a particular device or link 3Com Network Director increases the poll rate for the active monitors of the device or link to every 10 seconds in order to provide you with more detailed graphs.The poll rate for the active monitors of the device or link...
Page 286: Live Graphs Display
When you stop monitoring against a device or link, 3Com Network Director will discard all maintained data against the device or link.
Page 287: Displaying Thresholds
Each monitor has a configurable threshold associated with it that represents an abnormal, or high, state for that monitor.For multi-state monitors, 3Com Network Director also automatically determines an appropriate warning threshold for the monitor.These thresholds are used mainly for event generation: if a monitor stays in the warning or high state long enough then it will generate an appropriate event.
Page 288: Live Graphs Toolbar
7: M HAPTER ONITORING THE ETWORK Figure 127 Displaying Thresholds for Live Graph With Below-Threshold Values (Forcing display of Thresholds and Not Forcing display of Thresholds) If a graph does include values that are near or exceed the high threshold, then both thresholds will already be visible on the graph.
Page 289: Live Graphs Menu
Some items in the toolbar are not always applicable.When this is the case, the toolbar button is grayed out. Hovering the mouse cursor over a button in the toolbar causes a tooltip for that button to be displayed. The tooltip describes the operation associated with the button.
Page 290: More Detail Dialog Box
7: M HAPTER ONITORING THE Table 49 Live Graphs - View Menu Menu Item Display thresholds Table 50 Live Graphs - Help Menu Menu Item Help on this window More Detail Dialog To view more detail on a particular monitor, either right-click on its entry in the live graph display area of the Live Graphs window and select More detail from the right-click menu or select its entry in the live graph display area of the Live Graphs window and select Monitor >...
Page 291: Detailed Graph Dialog Box
Components The More Detail dialog box provides in-depth information about the selected monitor. The main body of text describes what attribute the monitor is monitoring, details the current state of the monitor and, if the monitor is in an abnormal state, describes what may be causing the problem and potential resolutions.
Page 292: Viewing A Monitor's Component Values
7: M HAPTER ONITORING THE ETWORK Figure 130 Detailed Graph The dialog box consists of the detailed graph, shown at the top, and a section containing view options beneath. The color of the line used to graph the monitor’s state is always shown as green in the graph’s key.
Page 293: Showing Thresholds
Components Figure 131 Component Values Fields Showing Thresholds The Display Options section, which is displayed on the right-hand side when the Data to Graph section is displayed, contains two options for controlling the display of the graphs: Show threshold for… and Show plot points.
Page 294: Showing Plot Points
3Com Network Director draws the complete graph by linking each of these points using straight lines.
Page 295: Zooming Into A Graph
Components Figure 134 Graph Save As... Dialog box Zooming into a Graph Left-clicking or right-clicking on a graph and dragging the mouse produces a highlighted area. When you release the mouse, the graph zooms in to show your highlighted area in more detail.
Page 296 7: M HAPTER ONITORING THE ETWORK Zooming in: Figure 135 Selecting Area for Zoomed in Graph View After zooming in: Figure 136 Zoomed in Graph View...
Page 297: Poll Rates
When the Detailed Graph dialog box is displayed for any monitor on a particular device or link 3Com Network Director increases the poll rate for the active monitors of that device or link to every 10 seconds in order to provide you with more detailed graphs.The poll rate for the active...
Page 298: Disabling And Enabling Individual Monitors
> Stop Monitoring from the main menu or Stop Monitoring from the right-click menu instead. When you stop monitoring for a device or link, 3Com Network Director clears the stored history for that item’s monitors and automatically resolves any unresolved events for that item that were generated by active monitors.Unresolved events for the device that were generated by...
Page 299 Configuration When a monitor is disabled the text Switched Off will be displayed over the monitor.In the Live Graphs window the graph is otherwise blank: Figure 137 Disabled Monitor Screen In the Detailed Graph dialog box for the monitor, the graph also shows the history for the monitor at the time the monitor was disabled.
Page 300: Controlling Monitoring Type And Polling Rates
Polling Rates more network traffic than is desirable.In order to address this, 3Com Network Director allows you to control the amount of traffic generated on your network by the monitors.There is a three level hierarchy in this...
Page 301 3Com Network Director de-registers itself as an SNMP trap source if it can, or ignores any SNMP Traps received from the device if it cannot. See “Registering 3Com Network Director as an SNMP Trap Destination”...
Page 302: Poll Rate
It is not possible to change the poll rates when automatic monitoring mode is used. 3Com Network Director will automatically configure the poll rates based upon the number of devices in the map.
Page 303 If you are in automatic mode or you have not changed the poll rates from the default and a Network Discovery adds more devices to your map then 3Com Network Director may automatically reduce the whole map poll rates to reduce the amount of traffic generated by monitoring.
Page 304: Specifying Monitoring Mode And Poll Rates At The Subnet Level
7: M HAPTER ONITORING THE ETWORK Specifying Monitoring Mode and Poll Rates at the Subnet Level You can only change the monitoring type and poll rate settings for a subnet if you are not using automatic monitoring mode for the whole map.If you are not using the automatic monitoring mode and wish to change these settings for a particular subnet, open the Monitoring tab of the subnet’s Properties dialog box:...
Page 305: Specifying Monitoring Mode And Poll Rates At The Device Level
Specifying Monitoring Mode and Poll Rates at the Device Level You can only change the monitoring type and poll rate settings for a device if you are not using automatic monitoring mode for the whole map.If you are not using the automatic monitoring mode and wish to change these settings for a particular device, open the Monitoring tab of the device’s Properties dialog box: Figure 141 Monitoring Tab of Device’s Properties Dialog Box...
Page 306: Specifying Monitoring Mode In The Discovery Wizard
7: M HAPTER ONITORING THE When you click OK, any changes you have made will be applied to all selected devices. If you stop monitoring on a device then the device will automatically enter the No monitoring mode.If you subsequently restart monitoring for that device then it will revert to its previous settings.
Page 307 Configuration Figure 142 Monitoring Pane of Network Discovery Wizard For a new discovery, specified subnets will be created with the monitoring mode settings you specify in the Monitoring pane, and all core devices newly discovered within those subnets will be configured to inherit their settings from their subnet.
Page 308: Changing Retry Periods And Timeouts
If monitoring data is not received in time, or is lost, then 3Com Network Director may assume incorrectly that there are problems on your network. 3Com Network Director avoids this by allowing you to configure the retry periods and timeouts for all traffic that it generates.
Page 309 Even if this option is unchecked, 3Com Network Director will still generate events for traps that it receives from any devices that are still configured with 3Com Network Director as an SNMP trap destination.See...
Page 310: Configuring The Storage Of Monitoring Data
If you wish 3Com Network Director to receive traps from a non-3Com device then you will need to manually add the IP address of the PC that 3Com Network Director is running on to the trap destination table of that device.
Page 311 Decreasing the time period for which history is maintained will reduce the memory used by 3Com Network Director on your PC. You may wish to decrease this time period if you find that 3Com Network Director is...
Page 312: Examples
ONITORING THE Examples This section provides examples of how you may use the monitoring features of 3Com Network Director to assist in the management of your network. You have are currently not monitoring any devices or links in your network, Enabling Monitoring and wish to start monitoring on all of the core devices in your network.
Page 313: Configuring Monitoring For A Remote Office
3 Select Monitoring > Stop Monitoring. 3Com Network Director will stop monitoring all of the devices and links in your network. Configuring You have turned off automatic monitoring mode, and are configuring Monitoring for a monitoring in order to reduce the monitoring traffic passing over your Remote Office WAN links.You decide that you wish to fully monitor the devices on a...
Page 314 7: M HAPTER ONITORING THE ETWORK Figure 148 Properties Dialog Box for a Subnet 3 Uncheck the Use defaults from Tools > Options dialog box option.This allows you to set the monitoring mode and poll rate options for the subnet:...
Page 315 Figure 149 Use Defaults Option in Tools > Options Dialog Box 4 Ensure that the Full monitoring mode is selected. 5 Edit the poll rates for the core devices and non-core devices, setting them to 300 and 600 seconds respectively: Examples...
Page 316 7: M HAPTER ONITORING THE ETWORK Figure 150 Poll Rates in Tools > Options Dialog Box 6 Close the Properties dialog box by clicking OK.
Page 317: Extending The Length Of Maintained Monitor History
Extending the Length You have found that the default 10-minute history does not provide you of Maintained with enough information for your purposes, and wish to extend it to 30 Monitor History minutes. 1 Launch the Tools > Options dialog box and select the Logging tab: Figure 151 Logging Tab of Tools >...
Page 318: Key Considerations
Monitors are used as the data source for almost all information that Logged Data 3Com Network Director gathers about the state of your network.In addition to providing live graph information and generating events, they are used for logging data for historical reports.
Page 319: Problems Starting Monitoring For A Device Or Link
The monitor has been started, but is unable to fetch the data it needs to operate. This may occur if 3Com Network Director is unable to authenticate with the device to retrieve the monitor data.For example, the wrong SNMP community strings may be configured for the device.You can change the security settings that 3Com Network Director uses for a device from the Security tab of the Properties dialog box for the device.
Page 320 HAPTER ONITORING THE Links Without Suitable Data Sources: When you start monitoring against a link, 3Com Network Director examines the two items at either end and selects one of them as the data source for the link’s monitoring information. However, some items cannot provide suitable information for monitoring the link.
Page 321 Key Considerations Figure 153 Error Message Dialog Box Click on the Next and Back buttons to see detailed information on each problem item.
Page 322 7: M HAPTER ONITORING THE ETWORK...
Page 323: The Event Log
Overview This chapter describes the events system that is used within 3Com Network Director to provide a constantly updated log of activity on your network. The events system can be used to view and take action on abnormal network conditions before they cause problems. It offers powerful...
Page 324: Event Types
When a monitor-based event is generated 3Com Network Director logs details of the state of the monitor in the time immediately before and after the event. You may view this historical state from within the More Details dialog box.
Page 325: Snmp Trap-Based Events
These are generated so that you can easily identify whether a period during which no events were logged is due to the network being in a stable state or due to 3Com Network Director not being active. Event Severities Each logged event has a severity associated with it that is used to indicate the perceived impact of the event on your network.
Page 326: Warning Severity
Critical Severity By default, the critical severity is only used for three event types in 3Com Network Director: Section of network down The Section of network down event is only generated when a group of devices in your network stop responding to monitoring polls, and so may indicate a major network outage.
Page 327: Event Severity Colors
Any logged event that represents an abnormal network condition is initially logged as an unresolved event to indicate that the condition that led to the event being generated is, as far as 3Com Network Director can deduce, still occurring. Unresolved events allow you to see the...
Page 328: Smart Event Analysis
Recurring events take longer to resolve than non-recurring events as 3Com Network Director waits to ensure that no further events of the same type and source are being generated. page 334 for more information.
Page 329: Event Suppression
Alerts can be used to keep you up-to-date with the state of your network when you are not at the PC running 3Com Network Director, to automatically perform operations when events occur, or simply to inform you of a new event if you are not currently viewing the Events window.
Page 330: Events List Components
Events window on screen at one time, each with a different filter. This section describes the how to use the Events window in 3Com Network Director to view the events for your network.
Page 331: Events Main Window
If you are launching the Events window to view all of the events logged for the map and you already have an Events window on screen that is not filtered for particular items then 3Com Network Director will bring that Events window to the front. Similarly, if you are launching the Events...
Page 332 Not applicable. The name of the item that the event was generated for. If the event is a 3Com Network Director internal event then this column will show Network. If this event was generated for a specific device then this column will show the type of that device.
Page 333: Events Toolbar
Shift+ left click to add a set of rows to, or remove them from, the selection. Right-clicking on an event launches a menu that provides access to the most commonly used event management tools. Some items in the right-click menu are not always applicable. When this is the case, the option is grayed out.
Page 334 8: T HAPTER VENT Table 54 Edit Menu Edit Menu Item Resolve Delete Undelete Find Filter Select All Table 55 View Menu View Menu Item Refresh Stop Table 56 Event Menu Event Menu Item Comment More Detail Hot Key Operation Resolves the currently selected events.
Page 335: Status Bars
Change Thresholds Disable this Event Attach Alerts Advanced Go to Table 57 Settings Settings Menu Item Hot Key Advanced Disabled Events Ageing Table 58 Help Menu Help Menu Item Hot Key Contents and Index Help on this window About Status Bars There are two status bars shown in the Events window.
Page 336: Working With Events
Working With Events Events may be used in many ways within 3Com Network Director, providing a powerful tool for network management. The following sections provide details of various operations that you may perform with events to obtain the most benefit from them.
Page 337: Commenting On Events
To view the event source of an event in the map, select the event and then select Event > Goto. 3Com Network Director locates and selects the event source in the map, if necessary changing the viewed submap to one that contains the event source, centers the event source in the screen, zooms in to it and brings the map to the front.
Page 338: Manually Resolving Events
Manually Resolving Events Other than the Trap: Link is unavailable event, 3Com Network Director is unable to automatically resolve SNMP trap-based events. This means that...
Page 339: Deleting Events
Rather than waiting for 3Com Network Director to determine whether or not the event is resolved, you can manually resolve the event. If the event is still not resolved then 3Com Network Director will log a new event when it next detects the abnormal network condition.
Page 340: Refreshing The Events List
8: T HAPTER VENT to prevent them from being generated in future. See “Disabling and Enabling Events” page 349 for more information on this. If you have marked an event for deletion and later decide that you do not wish to delete it then, providing the event ageing process has not yet deleted it, you may clear the deletion mark by selecting the event and then selecting Edit >...
Page 341: Exporting The Events List To A Csv Format File
Events List Components If you have stopped an update and later wish to ensure that you are viewing all of the events that match the filter, select View > Refresh. This will refresh the Events list from the events database. Exporting the Events The Events window provides facilities for exporting the events to a List to a CSV Format...
Page 342: Printing The Events List
8: T HAPTER VENT Printing the Events Selecting File > Print allows you to print the events that are currently List shown in the Events list. The printed output also includes the name of the map and the time of the print out. Find Dialog Box The Events Find dialog box allows you to search for specific text in all of the fields of the Events list.
Page 343: Filter Dialog Box
Events List Components If you click Find Next again after the end of the list has been reached the search will resume again from the beginning of the list. Find Previous: Clicking Find Previous starts searching the list from the event immediately preceding the last selected event in the list, and searches toward the beginning of the list.
Page 344: Name Filter
8: T HAPTER VENT Figure 160 Filter Dialog Box Filter options cannot be changed for an Events window if it was launched using the What’s Wrong right-click menu option for a selection. You may filter on any combination of the fields. Name Filter This field filters for events that were generated by a particular item or set of items.
Page 345: Show Only Voice Related Events Filter
Events list. Show only voice related events Filter Checking the Show only voice related events checkbox filters for those events that may affect the status of your 3Com NBX voice system. See “Understanding Voice-related 3Com Network Director Events” page 765 for more details of the events that will be filtered for.
Page 346: Last Number Of Days Filter
8: T HAPTER VENT The default is All, and no events are filtered based upon severity. If you select a specific severity then only events with that severity will be displayed in the Events list. Last number of days Filter This field filters the events by time.
Page 347: Deleted Events Filter
Events List Components Deleted Events Filter This field determines whether or not to show events marked for deletion in the Events list. You may choose to either Show or Hide events that have been marked for deletion. Hide is the default. If you wish to undelete an event you will need to Show the deleted events so that you may select it prior to selecting Edit >...
Page 348: More Detail Dialog Box
8: T HAPTER VENT Table 60 Events Window Filter Status Bar Details Text Filtering Name Severity Time Resolved Deleted Descriptio Comment The events shown in the Event list have been filtered so that only events The filter status bar does not show what values have been selected for each filter.
Page 349: Event Tab
SNMP trap-based events: If 3Com Network Director was able to interpret the SNMP trap when it was received then the main body of text will provide a description of the cause of the trap and, if the trap...
Page 350: Graphs Tab
If you know the format of an SNMP trap that 3Com Network Director is unable to interpret then you may configure 3Com Network Director with this information.
Page 351 Figure 163 More Detail Dialog Box Graph Tab The Graph tab works in a similar manner to the Detailed Graph dialog box for a monitor (see “Detailed Graph Dialog Box” details of this). However, there are a few differences worth noting: The Graph tab displays a historical graph of the monitor’s state around the time of the event, rather than a live graph.
Page 352: Trap Decode Tab
Decode section at the bottom left allow you to select differing levels of decode: Numerical decode: Object identifiers are shown using their numerical values. For example: 1.3.6.1.4.1.43.10.22.2.1.4.1.7.0.4.11 Full name decode: 3Com Network Director translates the object identifiers from their numerical values to their text equivalents as far as it...
Page 353: Event System Configuration
If it is not possible for 3Com Network Director to translate the entire object identifier then the remainder will be shown using numerical values. Using the example given above, 3Com Network Director translates 1 to iso, 3 to org, 6 to dod, and so on.
Page 354: Disabled Events Dialog Box
8: T HAPTER VENT Before the event is disabled, you must select the devices or links as appropriate, that the event is to be disabled for: Only devices and links which generated the selected events: Prevents events of the selected events’ types from being generated for the items that the selected events were generated for.
Page 355: Selecting Items
Event System Configuration The Disabled Events dialog box also allows you to change the items that an event is disabled for. To do this, select the event that you wish to change and click Change Selection. This then gives two options: Selected devices/links: This option allows you to select the items, as appropriate, that the event is disabled for, by clicking Select to launch the Selected Items dialog box.
Page 356: Controlling Smart Event Analysis
8: T HAPTER VENT Figure 166 Selected Items dialog box Depending upon the event that you are changing the selection for, this dialog box will allow you to change the set of devices or links that the event is disabled for. To add new items into the selection, click Add.
Page 357: Controlling Global Smart Event Analysis
3Com Network Director allows you to select which features of Smart Event Analysis are enabled on a global basis and, for recurring event handling and event suppression, on a per-event basis.
Page 358: Controlling Snmp Trap Filtering
3Com Network Director will not register itself as an SNMP trap destination with devices that are not in the map. If you wish 3Com Network Director to receive SNMP traps from a device that is not in the map then you will need to manually add the IP address...
Page 359: Controlling Per-Event Advanced Settings
Event System Configuration of the PC that 3Com Network Director is running on to the trap destination table of that device. Similarly, if you no longer wish 3Com Network Director to receive traps from a device that is not in the map then you will need to manually remove the IP address of the PC that 3Com Network Director is running on from the trap destination table of that device.
Page 360: Setting Thresholds For Monitor-Based Events
3Com Network Director allows you to configure the high threshold for multi-state monitors and then automatically determines a suitable setting for the warning threshold, based upon the configured high threshold and the type of monitor.
Page 361: Threshold Settings Dialog Box
From within the Live Graphs window, select the monitor that you wish to change the thresholds for and select Monitor > Change thresholds. “Live Graphs Window” From within the More Details dialog box for the monitor that you wish to change the thresholds for, click Change Thresholds. See Detail Dialog Box”on page 286...
Page 362 8: T HAPTER VENT Figure 170 Threshold Settings Dialog Box There are three ways in which the high threshold can be changed: Sensitivity: The sensitivity slider allows you to adjust how sensitive the monitor is to high values. Increasing the sensitivity will reduce the threshold and so increase the frequency with which events will be generated by the monitor.
Page 363 To view, and optionally apply, these suggested values click Use Suggested Settings. 3Com Network Director cannot suggest threshold values for WAN link monitors. Every monitor may have a different threshold for each item that it monitors.
Page 364: Configuring The Storage Of Monitoring History For Events
Configuring the For monitor-based events 3Com Network Director, by default, stores a Storage of 10-minute history of the monitor state both before and after the event Monitoring History was generated.
Page 365: Managing Event Ageing
Figure 171 Logging Tab Decreasing the time period that historical data is stored for will reduce the size of the event log and therefore the disk space used by 3Com Network Director on your PC. If you do not wish to store monitoring state histories at all for events then you can clear the check box for the Store history before and after events for: setting.
Page 366 8: T HAPTER VENT The process is controlled by two configurable parameters: When the ageing process runs it uses these parameters to determine what events to permanently remove from the events database using the following rules: The ageing process will never remove an unresolved event from the events database unless it has been marked for deletion.
Page 367: Ageing Dialog Box
The event ageing process can only run overnight if 3Com Network Director is running overnight. If you close 3Com Network Director every evening then the event ageing process will only ever be run if you click OK in the Ageing dialog box. See...
Page 368: Alert System Components
This section describes how to use the alert system in 3Com Network Director. Alerts System The alerts system works in a straightforward manner.
Page 369 Alert System Components To launch it from the Main Window, select the items that you wish to view the attached alerts for, or attach alerts to, and then select Alerts/Events > Attach Alerts. To launch it from the Events window, select events generated by the items that you wish to view the attached alerts for, or attach alerts to, and select Event >...
Page 370: Attaching Alerts To Items
If you attach a Sound alert to an item then the alert’s action will only be successfully performed if you have a correctly configured sound card and suitable speakers or headphones on the PC running 3Com Network Director. Configuring Alerts...
Page 371 There are various types of alert that may be created within the system. These are detailed in “Alerts” Each alert type may be configured with suitable parameters for its type. For example, a Sound alert only requires the name of a suitable audio file, whereas an E-mail alert requires details of the SMTP host to use, along with details of the source and destination e-mail addresses and the subject and contents of the message.
Page 372 8: T HAPTER VENT Figure 175 Sample Pop-up Alert If this alert was attached to a device, and an event was generated for that device due to high utilization then the following pop-up would appear on screen:...
Page 373: Snmp Trap Alerts
Alert System Components Figure 176 Pop-up for a Device Tokens are supported in the Text: field of Pop-up, E-mail, Pager and SNMP Trap alerts, in the Arguments: field of Application alerts and in the Subject: field of E-mail and Pager alerts. They are not supported in any other fields.
Page 374: Examples
8: T HAPTER VENT Figure 177 SNMP Trap Alert Options These two options allow you to send SNMP trap alerts for all events of particular severities, regardless of whether the alert is attached to the item that the event was generated for or not. If you select either of these options for an SNMP trap alert then you do not need to attach the alert to any items at all.
Page 375: Exporting High Severity Events Generated In The Last Week
To do this you decide to use undeleted high severity events as Generated in the Last an indication of the trends, and need to export them from 3Com Week Network Director so that you may import them into your database.
Page 376 8: T HAPTER VENT Figure 179 Filter Dialog Box - 7 Days of High Severity 5 Click OK to close the Filter dialog box and update the events in the Events List to match the filter:...
Page 377: Undeleting An Event
Figure 180 Events Window - Filtered Results 6 Select File > Export as CSV. 7 Ensure that Use current filter is selected and click OK. 8 Select the file that you wish to export to and click Save. You may now import the exported events into your database.
Page 378 8: T HAPTER VENT Figure 181 Filter Dialog Box - Show 3 Click OK to close the Filter dialog box and update the events in the Events window to match the filter:...
Page 379 Figure 182 Events Window - Updated 4 Locate the event that you wish to retain in the Event list and select it: Figure 183 Events Window - Select Event 5 Select Edit > Undelete. This clears the deletion mark for the event: Examples...
Page 380: Obtaining Events For Received Snmp Traps
3Com Network Director events system. 1 Add the IP address of the PC running 3Com Network Director to the SNMP trap destination table of the service monitoring application. Refer to the user guide of your service monitoring application for details of how to do this.
Page 381: Getting Events As Soon As Your Network Has A Problem
Settings dialog box by clicking OK. If you know the format of the SNMP traps that the service monitoring application can generate then you may wish to configure 3Com Network Director with this information so that it can interpret them correctly.
Page 382: Receiving Notification When A Server Farm Is Unreachable
8: T HAPTER VENT Figure 186 Advanced Settings Dialog Box 4 Close the global Advanced Settings dialog box by clicking OK. In some networking technologies, particularly Ethernet, it is normal to see spikes in the traffic rates, where the traffic rate suddenly increases to very high levels for very short periods of time before returning to low levels.
Page 383 24-hours a day. You wish to receive pager messages whenever there is a problem with the farm to minimize the impact these may have. 1 Select the servers that are members of the server farm in the map or tree. 2 Select Alerts/Events >...
Page 384 8: T HAPTER VENT 6 Close the Add Alert dialog box by clicking OK to add the alert and return to the Set Up Alerts dialog box. The Server Farm Alert will now be visible in the list: Figure 188 Set Up Alerts Dialog Box 7 Close the Set Up Alerts dialog box by clicking OK to complete the addition of the new alert and return to the Attach Alerts dialog box.
Page 385 Examples Figure 189 Attach Alerts Dialog Box...
Page 386: Key Considerations
Key Considerations The following section provides assistance when using the events system within 3Com Network Director. No Events in the There are various reasons why there may be no events visible in the Events List...
Page 387: Filter Has Excluded All Events
Dialog Box” page 339. No Graph Available In order for graphs to be generated for monitor-based events, 3Com for an Event Network Director must be configured to both maintain monitor histories and store historical monitor state before and after events.
Page 388 Figure 192 Options Dialog Box - Logging Tab Graphs are only generated for monitor-based events. If you launch the More Detail dialog box for an SNMP trap-based event or a 3Com Network Director internal event then there will be no Graph tab, regardless of whether or not the storing of historical data before and after events is enabled.
Page 389: Performance Reporting
In this way you can control what parts of the network to monitor for long-term data collection. Logging data from an item adds no extra overhead to 3Com Network Director in terms of collecting live data from your network.
Page 390: Data Resolutions
The monitor poll rates will usually be shorter than the resolutions used by 3Com Network Director for logging data. In order to cope with this 3Com Network Director aggregates the data from multiple monitor polls into a single logged data record.
Page 391 Components Figure 193 Historical Report Example: The historical report is an HTML report showing graphs for collected data for the applicable item at each different resolution. The resolutions used are as follows:...
Page 392 When you view a historical report it is saved under a temporary file that is removed when 3Com Network Director is closed. If you wish to preserve a historical report use the Web browser’s Save As option. You can also preserve the data used to generate an individual graph within a historical report by exporting its data in CSV (comma-separated value) format.
Page 393: Link Monitors
Wireless undecryptables Wireless FCS errors Link monitors Depending on the capabilities of the devices involved in a link, 3Com Network Director will sometimes use a MIB-II based data source and at other times a RMON based data source. Table 64 Data Source Usage...
Page 394: Logging Options
None None Comments For links for which 3Com Network Director uses RMON etherStats as a data source. For links for which 3Com Network Director uses the MIB-II ifTable as a data source. For links for which 3Com Network Director uses RMON etherStats as a data source.
Page 395: Database
Located in this directory is a file called mapping.txt. This CSV file contains an entry for every device or link that has been monitored by 3Com Network Director now, or in the past. You can use this file to locate the database for a given device or link.
Page 396: Examples
9: P HAPTER ERFORMANCE These database files are never automatically removed by 3Com Network Director, though the file size is allocated on initial creation and will not increase over time. For more on file sizes and managing the database size, see...
Page 397: Web Server Analysis
5 Repeat steps 1 – 4 for each of your core links. Using these graphs you can see the trend of link utilization over the past two years. This should help you estimate how utilization will continue to develop in the near future. If you need to perform a more detailed trend analysis for a link, you can click the appropriate hot-link below the Utilization graph to export the data behind the yearly graph in CSV format.
Page 398 9: P HAPTER ERFORMANCE EPORTING Figure 197 Daily Graph of HTTP Response Time In this example over the course of two days, demand on your Web server is spiky, but most of the time it is within acceptable levels. You feel that at its current levels, performance is acceptable, but any increase in traffic would necessitate an upgrade.
Page 399: Useful Information And References
Mapping file format 3Com Network Director maintains a mapping file to allow you to locate the database for any given device or link. This CSV file contains an entry for every device or link that has been monitored by 3Com Network Director now, or in the past.
Page 400: Database File Format
ERFORMANCE If you do not know the MAC address, or the device in question has multiple MAC addresses, you can find the device on the 3Com Network Director map using the Edit > Find dialog box, and launch its Properties dialog box.
Page 401 For example, to convert the round robin database 0/1/08-00-4e-0b-d2-84.rrd to XML format and store it in the file RouterHistory.xml in the 3Com Network Director installation directory, run the following command from within the 3Com Network Director installation directory: bin\rrdtool dump logging\0\1\08-00-4e-0b-d2-84.rrd >...
Page 402: Database Management
9: P HAPTER ERFORMANCE Monitor Utilization Utilization – Octets Utilization - Packets Utilization – In Octets Utilization – Out Octets Utilization – In Packets Utilization – Out Packets Broadcast (Non-unicast Packets) Broadcast -Broadcast Packets Broadcast – Multicast Packets Link Discards Link Discards –...
Page 403: Key Considerations
If you have the mapping file opened in an editor, or are reading it via a script, this may cause the file to lock, and 3Com Network Director may be unable to update it. If this occurs you should unlock the file by closing the editor or exiting the script respectively.
Page 404: Missing Data Within Rrd Database Files
FTP server running on it, the data source for FTP will never record any data. 3Com Network Director may use data gathered using RMON or MIB-II datasources depending on the capabilities of devices at either end of the link.
Page 405 This may occur in a number of situations, some common ones being: A device has no IP address, and so cannot be monitored. A link has no port information at both ends, and so cannot be monitored. Further information on monitoring problems can be found in Starting Monitoring for a Device or Link”...
Page 406 9: P HAPTER ERFORMANCE EPORTING...
Page 407: Rmon
Introduction This chapter describes 3Com Network Director support for the RMON standard. This chapter covers the following topics: Key Concepts Components Examples Useful Information And References Key Considerations...
Page 408: Key Concepts
HAPTER Key Concepts The following section describes the key concepts of RMON and the support provided by 3Com Network Director. What is RMON RMON (Remote Monitoring) is a network management standard that allows a centralized management application to gather information about the network from distributed network devices.
Page 409: Host
The History group allows you to monitor activity on your network at any chosen time in the past. Host The Host group defines a standard by which a network device can make available information on the activity of each separate "host" seen by the network device on each of its interfaces and VLANs.
Page 410: Matrix
Each RMON group contains two types of information: Network devices normally have a number of tables configured by default on each interface, so that a management station such as 3Com Network Director can immediately see basic network information without having to pre-configure the device.
Page 411: Components
Most 3Com network devices support the most commonly used five RMON groups of RMON. 3Com Network Director allows you to configure and gather information from these groups on any RMON-compliant 3Com device on your network, and presents this information in various flexible and useful ways.
Page 412: The Menu Bar
10: R HAPTER Figure 199 RMONView Window The RMONView window is divided into four main areas: The Menu bar The following tables list each menu item for the menu bar and the associated operation invoked by selecting it. File menu Table 68 operation invoked by selecting it.
Page 413: View Menu
Menu Item Hot Key Print Setup Export Exit View menu Table 69 lists each menu item for the View menu and the associated operation invoked by selecting it. View menu Table 69 Menu Item Hot Key Toolbar Status bar Graph only Graph and Table Table only Components...
Page 414: Options Menu
10: R HAPTER Menu Item Clear flags Pause Graph and Resume Graphing Options menu Table 70 operation invoked by selecting it. Table 70 Options Menu Menu Item Display Graph Automatic Upload Hot Key lists each menu item for the Options menu and the associated Hot Key Operation When you click on data in a graph, a...
Page 415 This menu option is not available for history views. Sets the address translation level used for all views in RMONView to Custom Name. 3Com Network Director will attempt to display the custom names corresponding to addresses in the host and matrix views.
Page 416 Hot Key Operation Sets the address translation level used for all views in RMONView to User Name. 3Com Network Director will attempt to display the user names corresponding to addresses in the host and matrix views. “Map Item Labels and Address Translation”...
Page 417: Update Menu
RMONView to Vendor Name. This is equivalent to selecting View > Labels > MAC Address in the 3Com Network Director main window when the Translate MACs option is enabled in the Tools > Options dialog box. 3Com Network Director will...
Page 418: Window Menu
10: R HAPTER Window menu This menu contains standard Windows options for rearranging windows. lists each menu item for the Windows menu and the associated operation invoked by selecting it.Windows Menu Menu Item Cascade Tile Arrange Icons View List Help Menu Table 72 operation invoked by selecting it.
Page 419 Figure 200 Toolbar Buttons Some items in the toolbar are not always applicable. When this is the case, the toolbar button is grayed out. Hovering the mouse cursor over a button in the toolbar causes a tooltip for that button to be displayed. The tooltip describes the operation associated with the button.
Page 420: The Table View
10: R HAPTER Menu Item Progress bar The Table View The table view displays the raw data as it is read directly from the device. The data shown in the table varies depending on the chosen RMON view. The Table Control Dialog Box The Table Control dialog box, launched from the Options >...
Page 421: The Graph View
Limit Table: retrieves and displays the first n rows from the RMON table corresponding to the view, where n is the number entered in the Max Number of Rows field. Maximum Table Fill: retrieves and displays all of the rows from the RMON table corresponding to the view.
Page 422: 3Com Switch 4007
3Com Switch 4007 If the selected device is a 3Com Switch 4007 a separate submenu is presented allowing selection of the slot within the chassis for which you...
Page 423 Components Figure 203 RMON > Statistics > Slot 5: 36 Port 10/100 L2 Switch Selecting one of these menu options launches “The Statistics View dialog box”, with the interface list populated with the interfaces available on the chosen slot. Viewing RMON statistics data for a selected link The menu presented when the current map selection is a single link lists the interfaces at each end of the link which support the RMON Statistics group.
Page 424 10: R HAPTER Figure 204 RMON Statistics Data for a Selected Link Selecting one of these menu options launches “The Statistics View dialog box” as shown on page 421, with the interface list populated with the interfaces available on the chosen device. The interface associated with the chosen port will be selected by default.
Page 425 This dialog box presents a list of the interfaces available on the device, allowing you to choose the interface for which you want to view the associated data. Whenever it can, 3Com Network Director will pre-select the interface in the list associated with your selection on the 3Com Network Director...
Page 426: Community String
60 seconds (i.e. 1 minute). Community String The Community field is initialized to the read/write community string specified for the device in the 3Com Network Director Properties dialog box. See Clicking Edit launches the Edit Community dialog box, which allows you to specify an alternative community string to be used to retrieve RMON data from the selected device.
Page 427: Viewing Data From The Rmon History Group
If the RMONView window has already been previously launched, the new view will appear within the existing RMONView window. Only one instance of the RMONView window is shown by 3Com Network Director at any time. You can switch between views in the RMONView window by selecting them in RMONView's Window menu.
Page 428: 3Com Switch 4007
“History View dialog box” page 427 for further information. 3Com Switch 4007 If the selected device is a 3Com Switch 4007 a separate submenu is presented allowing selection of the slot within the chassis which you want to view history data for.
Page 429: Viewing Rmon History Data For A Selected Link
Components Figure 208 Switch 4007 Specific Submenu Selecting one of these menu options launches the History View dialog box with the interface list populated with the interfaces associated with the chosen slot. See “History View dialog box”on page 427. Viewing RMON history data for a selected link The menu presented when the current map selection is a single link lists the interfaces at each end of the link which support the RMON History group.
Page 430 10: R HAPTER Figure 209 Viewing Single Link Lists Selecting one of these menu options launches the History View dialog box, with the interface list populated with the interfaces available on the chosen device. The interface associated with the chosen port will be selected by default.
Page 431: History View Dialog Box
Components History View dialog box Figure 210 History View Dialog Box...
Page 432: Update Rate
Whenever it can, 3Com Network Director will pre-select the interface in the list associated with your selection on the 3Com Network Director map. If you wish to change the selected interface, or customize the data shown in the RMONView window, you can do so using the above dialog box.
Page 433: History Entries
3Com devices generally create two standard history tables on every supported interface - one sampling every 30 seconds, and one sampling every 30 minutes. These allow you to immediately see historical information against an interface without having to have pre-configured your own history table.
Page 434 10: R HAPTER Figure 212 History Entry Creation This allows you to define a sample interval (frequency of sampling) and a sample length (the length of time over which statistics are gathered). If resources are available on the device, a new history table will be created on the device, which can then be selected from the History Entries list.
Page 435: Viewing Data From The Rmon Host Group
Components Figure 213 RMONView Window with RMON History Data Viewing data from the RMON Host group The Host option is available through the top level RMON menu, or the right-click RMON menu against a single selected device or link on the map.
Page 436: 3Com Switch 4007
See “Host View dialog box”on page 436. 3Com Switch 4007 If the selected device is a 3Com Switch 4007 a separate submenu is presented allowing selection of the slot within the chassis which you want to view host data for.
Page 437: Viewing Rmon Host Data For A Selected Link
The menu presented when the current map selection is a single link lists the interfaces at each end of the link which support the RMON Host group. On 3Com devices, the Host group is generally only supported on VLANs, not on individual physical ports. For more information about “Supported Devices”...
Page 438 10: R HAPTER Figure 216 Host View Dialog Box with the VLAN Interface Preselected If the port at either end of the link is a member of multiple VLANs, the port itself is listed in the Host submenu. Figure 217 Port that is a Member of Multiple VLANs...
Page 439 Components Selecting a port launches the Select VLAN dialog box shown below: Figure 218 Select VLAN Dialog Box This intermediate dialog box lists all VLANs on which the selected port is a member. The dialog box allows you to select which VLAN on the device you want to view RMON Host data for.
Page 440: Host View Dialog Box
10: R HAPTER Host View dialog box Figure 219 Host View Dialog Box...
Page 441 Whenever it can, 3Com Network Director will pre-select the interface in the list associated with your selection on the 3Com Network Director map. If you wish to change the selected interface, or customize the data shown in the RMONView window, you can do so using the above dialog box before clicking OK.
Page 442 10: R HAPTER Predefined View Packet Sort by The selected Sort by option controls the ordering of the display of the contents of the Hosts view. There are three main sort options: When using the Selected Rate option, you may see the following error dialog box: Definition Packets transmitted to and from each...
Page 443 Close. To remove existing hostTopN tables from the device, select them in the dialog box, and click Delete. Removing existing tables should free up enough resources for 3Com Network Director to create its own new table. Be careful when doing this - the existing tables may currently be in use by other management stations on your network, or by 3Com Network Director itself.
Page 444: Viewing Data From The Rmon Matrix Group
10: R HAPTER Figure 221 RMONView Window Viewing data from the RMON Matrix group The Matrix option is available through the top level RMON menu, or the right-click RMON menu against a single selected device or link on the map. The option is only available if the RMON Matrix group is supported by a selected device, or by one of the devices at the ends of a selected link.
Page 445 3Com Switch 4007 If the selected device is a 3Com Switch 4007 a separate submenu is presented allowing selection of the slot within the chassis for which you want to view matrix data.
Page 446 The menu presented when the current map selection is a single link lists the interfaces at each end of the link which support the RMON Matrix group. On 3Com devices, the Matrix group is generally only supported on VLANs, not on individual physical ports. For more information about “Supported Devices”...
Page 447 Components Figure 224 Matrix View Dialog Box If the port at either end of the link is a member of multiple VLANs, the port itself is listed in the Host submenu.
Page 448 10: R HAPTER Figure 225 Host Submenu Selecting a port launches the Select VLAN dialog box shown below: Figure 226 Select VLAN Dialog Box This intermediate dialog box lists all VLANs on which the selected port is a member. The dialog box allows you to select which VLAN on the device you want to view RMON Matrix data for.
Page 449 Whenever it can, 3Com Network Director will pre-select the interface in the list associated with your selection on the 3Com Network Director map. If you wish to change the selected interface, or customize the data shown in the RMONView window, you can do so using the above dialog box.
Page 450: Stations
HAPTER Community String The Community field is initialized to the read/write community string specified for the device in the 3Com Network Director Properties dialog box. See Clicking Edit launches the Edit Community dialog box, which allows you to specify an alternative community string to be used to retrieve RMON data from the selected device.
Page 451: Managing Rmon Tables
Managing RMON tables If you try to launch RMONView Statistics, Host or Matrix views against an interface on which these tables do not exist, 3Com Network Director gives you the option of creating these tables immediately. If the selected interface does not have the required table, the following...
Page 452: Deletion Of Rmon Tables
10: R HAPTER Figure 229 Interface Dialog Box If you click on Yes, an attempt is made to create the appropriate table on the interface. If this fails, the following dialog box is shown: Figure 230 Failure Dialog Box The table creation may fail if: If the table creation is successful RMONView will be launched automatically against the interface.
Page 453 The SNMP community string used by default is indicated in the Community: field. This is initialized to the read/write community string specified in 3Com Network Director for the device. You can change this if you wish. See “Viewing Device Details”...
Page 454: Examples
RMON tables take up resources on network devices, and may affect the device's performance. Be careful not to delete tables that you yourself did not create - they may be in use by 3Com Network Director, or by another management application on your network. Examples This section describes some RMON examples supported by 3Com Network Director.
Page 455: How Do I Graph Utilization On A Specific Vlan
OK. Utilization for the selected VLAN across the sampling intervals chosen will be graphed. How do I view the An aggregated link is a composite of more than one physical link. 3Com data associated with devices do not in general gather data for the aggregated link as a whole.
Page 456: Useful Information And References
RMON tables take up resources on network devices, and may affect the device's performance. Be careful not to delete RMON tables which you have not yourself manually created. 3Com Network Director creates and uses RMON tables for basic monitoring of the network - removing these tables will adversely affect this functionality.
Page 457: Overview
This chapter describes the Reporting feature of 3Com Network Director. You can use the Reporting feature to obtain on-demand reports describing the 3Com devices on your network, listing attributes such as IP addresses, MAC addresses and agent software versions. You can also obtain specific information you may require by creating custom reports.
Page 458: Key Concepts
Alternatively, you can choose to generate a report based on the whole map. Feature Reports Types Various features within 3Com Network Director use reports to convey information. These are covered in the section detailing the feature as shown in...
Page 459: Device Report History - Restriction
Reports History A full history of generated reports is maintained by 3Com Network Director. You can view old reports and export them to CSV using the Report History feature. To aid identification of old reports, the historical reports are tied to the currently loaded map.
Page 460: Export To Csv
For convenience, it also displays the number of devices reported on at the start of the report. 3Com Network Director contains a large number of report types. for further information. In addition to these the following report...
Page 461: Capacity Report
Device type Total ports on the device Ports available (unused) on the device This report provides information on all devices for which 3Com Network Director has port information. To gather this port information, the device needs to support SNMP. At the bottom of the Ports available column is a summary listing the number of free ports across the device selection and a percentage of how many ports are available of the total ports present.
Page 462: Reports Dialog Box
Devices that do not have any ports of the appropriate speed available are not included in the report. If 3Com Network Director could not obtain the speed of the ports on a switch they will not be included in this report. For reasons why this could occur, refer to the capacity report section.
Page 463: Generate Report Tab
Figure 233 Reports Dialog Box Generate Report Tab From the Generate Report tab you can select any report type in the list which will update the information presented in the text panel, under the label Information included in this report. This panel displays the following: Name –...
Page 464: History Tab
11: C HAPTER REATING EPORTS Click Generate Report to create the report for the report type you have selected in the Report types list. This will produce the report and open it in your default web browser. If you have some items selected, and the report is selection-sensitive, you will be presented with a pop-up asking if you wish to produce a report for all items in the current map file.
Page 465 Components You can also save reports as CSV files and delete reports using this dialog box. The table of reports can be sorted by clicking on the column headers. This is useful when trying to find a particular report to view or to aid deletion of old reports, for example.
Page 466: Custom Report Types Dialog Box
11: C HAPTER REATING EPORTS Custom Report Types The Custom Report Types dialog box enables you to: Dialog Box The list shown in created. It does not list any of the pre-defined report types. Figure 235 Custom Report Types The panel in this dialog box entitled Information included in this report works in the same way as the panel in the main Reports dialog box.
Page 467: Add/Edit Report Type Wizard
If you edit an existing report type, you are warned that if you change the columns used in the report type then 3Com Network Director will remove any existing reports (i.e. the reports listed in the History tabbed pane of the Reports dialog box) that were generated from that report type.
Page 468 N/A in it. only obtained for 3Com devices. If the hardware version is not available then N/A is displayed in this column. The IP address of the device, or Unknown if it is not known.
Page 469 The number of ports on a device. Product Number The product number of the device e.g. 3C17203. This is usually only obtained for 3Com devices. If the product number is not available then N/A is displayed in this column. Registered Whether the device has been registered with 3Com using the Device Warranty feature.
Page 470 11: C HAPTER REATING EPORTS Table 81 Available Columns for ‘Link Details Column Comment (Both ends) Device Name (Both Ends) Duplex mode IP Address (Both Ends) Link Aggregation Media Type Port (Both ends) Registered (Both Ends) Resilience Mode Spanning Tree Mode Speed Unit (Both...
Page 471: Name And Description Step
Components Name and Description Step You can use this step to specify the name and description of your custom report as shown in Figure 237: Figure 237 Add/Edit Report Type Wizard - Name and Description Step The name and description appears in the report when it is generated. They also display in the Reports dialog box in the Information included in this report panel when this custom report type is selected.
Page 472: Examples
Expansion Capability want to find out if you have enough capacity in your network and to work out which 3Com devices to connect them to. You can get an assessment of how much network capacity you have by charting available ports using the Save to CSV facility in Reports, in combination with an external CSV tool such as Microsoft Excel.
Page 473: Ensuring Stacks Are Running The Same Agent Version
This gives you a graph showing at a glance how many ports you have free across your range of 3Com devices and where the servers could be best connected. You can also use Excel’s sorting feature to sort the table data by Ports Available, for example.
Page 474: Key Considerations
If you have more than 500 generated reports stored, 3Com Network Director will display a warning when you launch the Reports dialog box. This is purely for information and will not affect the operation of 3Com Network Director in any way.
Page 475: Generate Report Not Working
The HTML file produced is a temporary file that is removed once 3Com Network Director shuts down. If you wish to view an old report, you can use the Report History feature to view it. If you wish to use the HTML report outside of 3Com Network Director, generate the report and select File >...
Page 476 11: C HAPTER REATING EPORTS...
Page 477: Configuring Single Devices
Administration Menu — contains integrated add-on 3Com device management applications. Registering Devices for Warranty — enables you to register the 3Com devices on your network for any applicable warranty. Key Concepts Components...
Page 478: Key Concepts
3Com Network Director. Web Management Many 3Com devices provide a web interface that enables you to manage a single device or stack of devices at one time. Your default web browser is used to display the web interface. Access to the interface is protected by username and password authentication.
Page 479: 3Com Device View
Network Jack Configuration Manager 3Com Network Jack Configuration Manager provides management for the 3Com Network Jack NJ200. Although the NJ200 is bundled with a Local Configuration Manager and a Central Configuration Manager, only the Central Configuration Manager is integrated with 3Com Network Director.
Page 480: Trace Route
12: C HAPTER ONFIGURING INGLE EVICES Figure 239 IP Ping Console Dialog Box The dialog box pre-fills the command line text box with the command ‘ping’ followed by the IP address of the device you have selected. The command line is provided so that you can specify additional command line options to the ping command.
Page 481 Key Concepts Figure 240 Trace Route Console Dialog Box The dialog box pre-fills the command line text box with the command ‘tracert’ and the IP address of the device you have selected. The command line is provided so that you can specify additional command line options to the trace route command.
Page 482: Properties Dialog Box
12: C HAPTER ONFIGURING INGLE EVICES Properties Dialog Box The Device Properties dialog box gives you additional details on a a selected device. The details are split in to four tabs as follows: General The General tab provides name and address information for your device as shown in Figure 241.
Page 483: Security
Figure 242 Properties - Security Tab The following two radio buttons are provided: Defaults — select this option to use the community strings 3Com Network Director is using by default on all other devices. If this community string does not work, 3Com Network Director will resort to using the factory defaults for devices of that device type.
Page 484: Unit Information
12: C HAPTER ONFIGURING Unit Information The Unit Information tab lists the various units in a stack. The individual device types, with hardware and software revision are shown in the table Figure 243 Properties - Unit Information Tab You can resize the columns in the unit information table by dragging the edges of the table headings.
Page 485: Vlans
Key Concepts VLANs The VLANs tab contains detailed VLAN information for the selected device as shown in Figure 244: Figure 244 Properties - VLANs Tab Clicking on the drop-down list will list all VLANs associated with the device. Each time you select a VLAN, the table under the drop-down list changes to show the ports that are members of that VLAN.
Page 486 12: C HAPTER ONFIGURING INGLE EVICES Figure 245 Properties - VLANs Tab - VLAN Routing If a VLAN is being used to constrain certain protocols the Protocol Details button is available. Click Protocol Details to launch a dialog box that lists the network protocols that are associated with the VLAN as shown in Figure 246:...
Page 487: Registering Devices For Warranty
Components Registering Devices You can register the 3Com devices on your network for any applicable for Warranty warranty. 3Com Network Director checks for devices on your network that have not yet been registered and sends this information to 3Com. “What Data is Sent to the 3Com server”...
Page 488: Device Warranty Wizard
To launch the wizard: Introduction Step The Introduction step describes the various stages of the wizard and provides a hyperlink to the 3Com Privacy Statement as shown in Figure INGLE EVICES...
Page 489: Contact Details Step
Components Figure 249 Introduction Step Click on the hyperlink to view the 3Com Privacy Statement in your default web browser. By clicking Next, you consent to the collection, processing and use of the data submitted in the Device Warranty Wizard, in accordance with the 3Com Privacy Statement.
Page 490: Partner/Reseller Details Step
All fields are compulsory (marked with a ‘*’), except the second line of the Address and the Phone Extension number 3Com Network Director retains these details for the next time you run the Device Warranty Wizard. This way, you only have to enter your contact details once.
Page 491 My preferred 3Com Partner/Reseller is — select this option if you order 3Com equipment from an approved 3Com Partner/Reseller. These fields are only displayed if you select the My preferred 3Com Partner/Reseller is option: Name — the company name of your preferred 3Com Partner/Reseller.
Page 492: Device Selection Step
Figure 252 Device Selection Step Each row in the list corresponds to a 3Com product. If the device in the map is a stack, the list will contain one row per unit. If the network node in the map is a chassis device, the list will contain one row for each chassis blade.
Page 493: Summary Step
Figure 253 Summary Step The Summary step provides a summary of the warranty registration information prior to sending it to 3Com. If you consent to 3Com keeping you updated on its products you will receive 3Com product news. If you selected I am registering on behalf of the individual named above in the Contact Details step of the wizard, then the first I consent to: option will be greyed out.
Page 494: Connection To The 3Com Server
Once the transmission is complete, a confirmation message is displayed as shown in Figure 255 Confirmation Message 3Com will send you an email within 24 hours to confirm that your 3Com devices are now registered for any applicable warranty. What Data is Sent to...
Page 495: Reports
Reports dialog box and clicking Generate Reports. Device Warranty You can generate a report on the devices on your network that 3Com Network Director registered for any applicable warranty as follows: 1 From 3Com Network Director, launch the Reports dialog box from Tools >...
Page 496 When you view the report you have generated the Registered column shows: INGLE EVICES Yes — if 3Com Network Director registered the product. No — if 3Com Network Director did not register the product. N/A — if the product is not supported by the Device Warranty feature. Figure 256.
Page 497: Examples
4007 using Telnet using the Telnet Management Interface. To do this: 1 Find the Switch 4007 device in the 3Com Network Director network map. This can be done using Edit > Find if needed. 2 Select the device and right-click on it to launch the right-click menu.
Page 498: Viewing Connected Ports Using Device View
Device View: View 1 Find the appropriate Switch 3300 device in the 3Com Network Director network map. This can be done using the Find dialog box if needed. 2 Select the device and right-click on it to launch the menu.
Page 499 5 In the Introduction step, make sure you have read the 3Com Privacy Statement and click Next. 6 In the Contact Details step ensure: If this is the first time you have used the wizard, that you enter your contact details and click Next. Alternatively, If you have previously completed the wizard, you review the contact details as they will be pre-set and click Next.
Page 500: Key Considerations Troubleshooting
Figure 258 Warning Message although you have already registered them on the 3Com website The reason for this is that 3Com Network Director only knows about devices that were registered using 3Com Network Director. If the devices were registered on the 3Com website, 3Com Network Director will think these devices are as yet unregistered.
Page 501: Frequently Asked Questions
There are two explanations for this: The product is not supported by 3Com anymore — if the product has been discontinued, there will be no warranty for that product. The warranty date has expired — if the warranty period for a device has expired, there will be no warranty for that device.
Page 502 12: C HAPTER ONFIGURING INGLE EVICES...
Page 503: Vlan Management
Overview This chapter describes the support for VLANs in 3Com Network Director. 3Com Network Director allows you to: Viewing the VLANs configured on your network Configuring VLANs on your network This chapter covers the following topics: ANAGEMENT View the VLANs configured on your network Configure the VLANs on your network The Tools >...
Page 504: Key Concepts
13: V HAPTER ANAGEMENT Key Concepts This section describes some 3Com Network Director key concepts relating to VLANs. General VLAN First some general information about network organization using VLANs. concepts About VLANs A VLAN is a logical group of devices that can be located anywhere in a network, but which communicate as if they are on the same physical segment.
Page 505: Benefits Of Vlans
Figure 259 A Network Setup Showing Three VLANs Benefits of VLANs The main benefit of VLANs is that they provide a network segmentation system that is far more flexible than any traditional network. Using VLANs also provides you with other benefits: VLANs ease the movement of devices on networks.
Page 506: 802.1Q Vlans
VLAN. Devices attached to ports within the VLAN collection are members of the VLAN. In general, VLANs on 3Com switches are port-based VLANs and as a result VLAN support in 3Com Network Director is aimed at port-based VLANs.
Page 507: Tagged And Untagged Vlan Membership
Key Concepts Tagged and untagged VLAN membership Switches typically allow ports to be either untagged or tagged members of a VLAN. If a port is an untagged member of a VLAN, packets transmitted on the port contain no VLAN information. If a port is a tagged member of a VLAN, packets transmitted on the port contain the VLAN ID as specified in the 802.1Q standard.
Page 508: The Default Vlan
13: V HAPTER ANAGEMENT Figure 260 Example of VLANs Distributed Amongst More Than One Switch The Default VLAN A new or initialized switch contains a single VLAN, the default VLAN. This VLAN has the following definition: All ports on the switch are initially placed in this VLAN, untagged. Communication between VLANs Communication between two different VLANs can only take place if they are connected to an appropriately configured router or a Layer 3 switch.
Page 509 Key Concepts VLAN, two VLAN-based IP interfaces are created on a Layer 3 switch: 192.168.50.1/255.255.255.0 for VLAN ID 2 and 192.168.51.1/255.255.255.0 for VLAN ID 3. Figure 261 below shows another example. The Switches are connected by 802.1Q tagged links. Using the 802.1Q tagged links, the Layer 3 switch, Switch D, can tell Switches A, B and C which VLAN the packets are destined for.
Page 510 Figure 261 Switches Connected by 802.1Q Tagged Links Primary and Secondary IP interfaces Some 3Com Layer 3 switches allow multiple IP interfaces to be created for one VLAN. To support this, these Layer 3 switches have the concept of primary and secondary IP interfaces. Primary and secondary IP interfaces determine how the switch processes broadcast and multicast traffic that arrives on a VLAN with multiple IP interfaces.
Page 511: Protocol-Based Vlans
VLANs. 3Com Network Director allows you to view the existing protocol-based VLANs defined on any Switch 4007’s or Corebuilder 3500’s on your network. 3Com Network Director does not support the creation or modification of protocol-based VLANs using the Create VLAN and Edit Port VLAN Membership wizards.
Page 512: 3Com Network Director Vlan Concepts
VLANs 1 and 2 to ensure connectivity. 3Com Network Discovering VLANs in 3Com Network Director Director VLAN When you perform a network discovery 3Com Network Director will Concepts retrieve the following information from each supported switch: In addition to gathering VLAN information from switches, 3Com Network Director will also infer the VLAN membership of devices that have no VLANs configured.
Page 513: Vlan Membership Inference
A VLAN-aware item is any device that does not conform to one of the above rules. If a port is a member of a VLAN then 3Com Network Director will infer that all VLAN-unaware devices hanging off that port are also members of the same VLAN.
Page 514 VLAN A as well. When working out the bounds of the set of VLAN-unaware devices, 3Com Network Director will stop when it reaches a router. 3Com Network Director can infer that a device is a member of more than one VLAN. “Properties dialog...
Page 515 Figure 264 VLAN Matching by 3Com Network Director 3Com Network Director would not consider these as two different VLANs and would instead work out that the VLANs are equivalent. 3Com Network Director will only consider a VLAN configured on one switch to...
Page 516 (non)equivalent IDs.Consider the following network: Figure 265 Network Example Because the links are tagged, 3Com Network Director will be able to deduce that the VLANs with ID 2 on each of the three switches are the same. Similarly with VLAN ID 3. However, the user has not used consistent names when creating the VLANs.
Page 517 If the above network was additionally configured like this: Figure 266 Example Configuration 3Com Network Director would not infer that the VLANs with IDs 4, 5 and 6 are the same. In this case, 3Com Network Director will list these VLANs...
Page 518: Components
13: V HAPTER ANAGEMENT Components This section covers the main components of the VLAN support in 3Com Network Director, namely: Show VLANs The Show VLANs functionality in 3Com Network Director allows you to highlight the members of a particular VLAN on the network map.
Page 519 Components Figure 267 Show VLANs Toolbar Selecting one of the VLANs from the list results in the members of that VLAN being highlighted on the map. For example: Figure 268 Show VLANs All devices and links that are not members of the VLAN are grayed-out. The VLANs tab in the Options dialog box can be used to control whether:...
Page 520: Filter View Button
3Com Network Director has inferred are members of the VLAN are also highlighted e.g. in the figure above, 3Com Network Director has inferred that the highlighted end-station is also a member of the VLAN.
Page 521: Maps With No Vlan Information
VLAN information. The Show VLANs toolbar will not be displayed. This can occur for several reasons: The map was originally created using a version of 3Com Network Supervisor earlier than v3.5. There are in fact no VLANs configured on the network at all. For example, if the network contains only VLAN-unaware devices such as hubs and traditional routers.
Page 522 The name component is restricted to 20 characters. When creating a VLAN, all current 3Com switches allow up to 32 characters for the VLAN name. Where a name is greater than 20 characters long, 3Com Network Director uses an ellipsis … at the end of the name to restrict it to 20 characters, the name is thus truncated to 17 characters.
Page 523 535. This Misconfigurations and Optimizations report entry will also inform the user of the name that 3Com Network Director has selected to use to refer to the VLAN in the rest of the application. Multiple discrete VLANs with the same VLAN ID but different...
Page 524: Find Dialog Box
13: V HAPTER ANAGEMENT i.e. the name part will be omitted. This can occur if there are multiple discrete (unconnected) VLANs using the same VLAN ID but configured with different VLAN names. For example, if one part of the network is using VLAN ID 2 and the name Engineering and another, separate part of the network is using VLAN ID 2 with the name Accounts, then the textual description of VLAN ID 2 in the Show VLANs toolbar will be:...
Page 525: Options Dialog Box
Generic IP device. or, any items which 3Com Network Director has inferred are members of the VLAN are also highlighted e.g. in the figure above, 3Com Network Director has inferred that an end-station is also a member of the VLAN.
Page 526 13: V HAPTER ANAGEMENT Figure 272 Options Dialog Box - VLANs Tab...
Page 527: Vlan Membership
VLAN IDs This check box controls how VLANs are listed in the Show VLANs toolbar and in the Find dialog box. When this check box is unchecked, 3Com Network Director will list all discrete VLANs on the network map, even if they use the same VLAN ID.
Page 528: Properties Dialog Box
13: V HAPTER ANAGEMENT Properties dialog box The VLANs tab on the Properties dialog box can be used to view the VLAN information for a particular device or link. The format of the VLANs tab depends on the type of item selected when the Properties dialog box is launched.
Page 529 Figure 273 Properties Dialog Box - VLANs Tab The combo box at the top of this dialog box lists all of the VLANs configured on this switch. The Ports in VLAN table is context sensitive; its contents change to reflect the selected VLAN, in the case above, vlan2. The VLAN may have no member ports.
Page 530 13: V HAPTER ANAGEMENT Column Connected to Tagged Protocol Details button The Protocol Details button will be grayed for VLANs configured on Layer 2 switches. For VLANs configured on Layer 3 switches, or Layer 3 modules in a chassis, if a VLAN has Layer 3 details configured, this button will be enabled and will launch the VLAN Protocol Details dialog box.
Page 531 Figure 275 Protocol Column VLAN Routing button The VLAN Routing button will be enabled if 3Com Network Director has been able to determine which, if any, devices are performing IP routing for the selected VLAN. Clicking the VLAN Routing button launches the...
Page 532 ANAGEMENT Figure 276 VLAN Routing Dialog Box The Router name field lists all of the routers that 3Com Network Director has determined are performing IP routing for the currently selected VLAN. The table below this field is context-sensitive: when the selected router changes, the table displays all of the IP interfaces defined on the router for the current VLAN.
Page 533 The top section is similar to the VLANs tab for a VLAN-aware switch in that it shows the VLANs configured on the switch – in this case only one. The combo box in the bottom section lists those VLANs that 3Com Network Director has inferred that this switch is a member of. See “VLAN...
Page 534: Vlans Tab For Vlan-Unaware Devices
The VLAN Routing button is also context-sensitive to the inferred VLANs combo box selection. It performs the same function as the VLAN Routing button described above so it is enabled if 3Com Network Director has been able to determine which devices are performing IP routing for the selected VLAN.
Page 535 VLANs tab for devices for which there is no VLAN information available If 3Com Network Director has been unable to read any VLAN information from a device and has been unable to infer any VLAN information about a device, then the following message is displayed in the VLANs tab on the...
Page 536 13: V HAPTER ANAGEMENT VLANs tab for a link The VLANs tab for a link gives information on the VLAN configuration at one or both ends of the link – see below. For each end of the link, there is a table that lists the VLANs explicitly configured on the port(s) at that end of the link.
Page 537: Vlan Configuration Report
VLAN configuration report An HTML report can be generated that will list details of the VLANs configured on the switches on your network map. The report can either be generated for all of the switches on your map, or for selected switches only.
Page 538: Misconfigurations And Optimizations Report
Misconfigurations and Optimizations Report After discovering all the devices and links on your network, 3Com Network Director checks for any misconfigurations or potential optimizations. If there are any, these are reported in the Misconfigurations &...
Page 539: Inconsistent Vlan Configuration On Link
2, has been created with inconsistent names: Engineering and Eng. 3Com Network Director would report this and indicate which of the names will be used to refer to the VLAN in the rest of 3Com Network Director. Figure 283 Inconsistent VLAN Naming Example (1)
Page 540: Changes Report
Figure 284 Inconsistent VLAN Naming Example (2) While the untagged VLANs with IDs 4, 5 and 6 will behave as the same VLAN, 3Com Network Director will not infer that this is the case. Instead, 3Com Network Director will report a misconfiguration and treat these as three different VLANs.
Page 541: Create Vlan Wizard
Components Trace Path The Trace Path functionality in 3Com Network Director only shows the physical path(s) between two devices on the network. It does not take into account the presence of VLANs. This means that if the two selected devices are on different VLANs, the path shown may be different from the actual path taken by packets going from one device to the other.
Page 542 In the VLAN name field, enter a textual description for the new VLAN. Once the VLAN is created, this is the name that 3Com Network Director will use to refer to the VLAN. This value can be up to 32 characters long.
Page 543 For each switch in the initial map selection, all ports connected to other switches in the map selection are listed. For each non-switch in the map selection, 3Com Network Director will find the nearest switch port to the non-switch and add this switch and port to the list.
Page 544 “Tagged and untagged VLAN membership” By default, 3Com Network Director assumes that: So, in the example above 3Com Network Director would assume that the port on the Switch 1100 connected to the Hub should be untagged. To modify the switches and switch ports listed in this wizard stage, click the Change Selection button to launch the Selection Editor dialog box.
Page 545 Components Figure 289 Selection Editor Dialog Box This dialog box allows you to add and remove switches and switch ports. The tree in this dialog box will be initially populated with all of the switches and switch ports listed in the wizard stage. The tree lists all of the available ports on these switches but indicates which ports have not been selected to be members of the VLAN by greying them out.
Page 546 13: V HAPTER ANAGEMENT Ports by Type dialog box and selecting the Unconnected ports and Untagged radio buttons. You can select all items in the tree by pressing Ctrl-A. Using this in conjunction with the Add Ports by Type dialog box allows you to quickly select large numbers of ports across your network for inclusion in the VLAN.
Page 547: Checking Vlan Connectivity
VLAN needs to be created. When you click the OK button in the Selection Editor dialog box, 3Com Network Director will perform some checks on the selected switch ports.
Page 548 ANAGEMENT Figure 291 VLAN with Gaps As well as checking for gaps such as this, 3Com Network Director also assumes that for a VLAN to be complete it should be possible for devices on this VLAN to communicate with devices on other VLANs and vice-versa.
Page 549 Components Figure 292 Finding a Layer 3 Switch for a VLAN If 3Com Network Director detects that there are additional ports required to fill in any gaps or that there are additional ports required to connect the current selection to a Layer 3 switch, these ports will be presented in...
Page 550: Configuring Unsupported Devices
Remove button in this wizard stage to remove the erroneous ports. Another reason why you might want to reject the additional ports recommended by 3Com Network Director is if you do not require any IP routing for your VLAN. In this situation you should use the Remove button to remove the ports 3Com Network Director has determined are required to connect the VLAN to the nearest Layer 3 switch.
Page 551: Adding An Ip Routing Interface
553. You can either manually configure these unsupported devices at this point in the wizard, or wait until 3Com Network Director has automatically created the VLAN on all the supported devices before manually configuring the unsupported devices. If you choose to manually...
Page 552 13: V HAPTER ANAGEMENT Figure 295 Specify an IP Routing Interface To add a new IP routing interface, select the Yes radio button in the wizard stage above and then click the Add IP Interface button. This launches the Add IP Interface dialog box: Figure 296 Adding a New IP Routing Interface...
Page 553 IP address and a subnet mask. Some 3Com Layer 3 switches allow you to create multiple IP interfaces per VLAN and as a result have the concept of primary and secondary IP interfaces - see “Primary and...
Page 554: Summary Of Changes To Be Made
13: V HAPTER ANAGEMENT Figure 297 Specifying an IP Routing Interface You may create additional IP interfaces on other Layer 3 switches by launching the Add IP Routing Interfaces dialog box again. If one of the new IP routing interfaces that you have added to the table above is incorrect, you can use the Remove IP Interface button to remove it.
Page 555 3Com Network Director creates the new VLAN on each switch one at a time. If 3Com Network Director fails to create the VLAN on a switch for whatever reason, 3Com Network Director will stop the configuration process and will not attempt to create the VLAN on any other switches.
Page 556: Edit Port Vlan Membership Wizard
Create VLAN wizard again. If the creation of the new VLAN is successful, 3Com Network Director will create an info severity event in the event system. If the creation of the VLAN was unsuccessful, 3Com Network Director will create a warning severity event in the event system.
Page 557: Modifying The List Of Selected Switches And Ports
For each switch in the initial map selection, all ports connected to other switches in the map selection are listed. For each non-switch in the map selection, 3Com Network Director will find the nearest switch port to the non-switch and add this switch and port to the list.
Page 558 13: V HAPTER ANAGEMENT Modifying the VLANs on the selected switch ports The next wizard stage displays all the VLANs that the selected switch ports are currently members of, and allows you to modify the VLAN membership. Figure 300 Modifying VLAN Membership Untagged VLAN When this wizard stage first appears, the drop-down menu at the top will be pre-selected with the VLAN on which the selected ports are currently...
Page 559 VLANs currently being used on your network. If you choose to modify the untagged VLAN for the selected ports, when you click the Next button 3Com Network Director will warn you that you may lose contact with the devices connected to these ports on the current untagged VLAN.
Page 560 VLAN. You can choose from all the VLANs currently being used on your network. By default, 3Com Network Director will assume that the following types of switch port should always be untagged: If your port selection includes such ports but you have chosen to make them tagged members of one or more VLANs, you will be presented with a warning dialog box when you click the Next button.
Page 561 VLANs – 3Com Network Director expects all ports to be a member of at least one VLAN. When you click the Next button in the wizard stage above,...
Page 562: Checking Vlan Connectivity
Checking VLAN connectivity When you click the Next button in the previous wizard stage, 3Com Network Director will check that there are no gaps in the list of selected switches and ports. This wizard stage works in a similar manner to the corresponding stage in the Create VLAN wizard –...
Page 563: Summary Of Changes To Be Made
wizard stage works in a similar manner to the corresponding stage in the Create VLAN wizard – see “Configuring unsupported devices” page 546 for details. Summary of changes to be made The final wizard stage displays a summary of the VLAN changes that are to be made.
Page 564 Edit VLAN Summary report detailing the changes that were made. 3Com Network Director edits the VLANs on each switch one at a time. If 3Com Network Director fails to edit the VLANs on a switch for whatever reason, 3Com Network Director will stop the configuration process and will not attempt to edit the VLANs on any other switches.
Page 565: Device History Report
Device History Report To view all of the VLAN creates and edits that have been performed by 3Com Network Director on your switches using the Create VLAN and Edit Port VLAN Membership wizards, you can launch the Device History report. To do this: Launch the Reports dialog box by selecting Tools >...
Page 566: Reporting The Vlan Configuration Of All Switches On The Network
13: V HAPTER ANAGEMENT An alternative approach is to highlight the VLAN in the map. This will provide you with a graphical picture of the switches on which the VLAN is configured. To do this: 1 Launch the Options dialog box from the Tools > Options menu option and select the VLANs tab.
Page 567 Components Figure 305 Selecting the Link to the End Station on the Map...
Page 568 13: V HAPTER ANAGEMENT If the port is not currently connected to anything, you would first select the switch on the map and then launch the Edit Port VLAN Membership wizard. Then in the first stage of the wizard you would click the Change Selection button and then select the port from the launched Selection Editor dialog box.
Page 569: Extending Your Vlans To Include New Inter-Switch Links
Components After: Figure 307 Network After If the inter-switch links between this switch and the nearest Layer 3 switch do not have VLAN accounts configured, the next wizard stage will show the additional ports that need to be configured to achieve this. Extending your VLANs to include new inter-switch links This section describes the situation where you wish to extend your existing VLANs to include one or more new inter-switch links.
Page 570 13: V HAPTER ANAGEMENT Figure 308 Selecting the Link The first wizard stage would display the two switches that are to be configured, and selecting either switch would list the port on that switch that is to be configured. You would click Next at this wizard stage as no additional ports need to be added.
Page 571 Components Figure 309 The Second Wizard Stage Clicking Next would take you to the Summary stage box listing all of the changes that are about to be applied: Figure 310 The Summary Wizard Stage Clicking Finish would then apply the VLAN membership changes to the two switch ports.
Page 572: Creating A New Voice Vlan For 3Com Nbx Systems
1 Ensure that the NBX call processor and phones have been discovered in 3Com Network Director and are present in the current map. 2 Launch the Find dialog box by selecting the Edit > Find menu option.
Page 573: Useful Information And References
Institute of Electrical and Electronics Engineers (IEEE) Web site: http://www.ieee.org Device support which 3Com Network Director can display and configure VLANs. Each 3Com switch has a maximum limit on the number of VLANs that can be created. See VLAN-based IP routing interfaces. “Reference A”...
Page 574: Key Considerations
See section “Inconsistent VLAN IDs” further information. If there are non-3Com switches on which a VLAN is configured, the membership of this VLAN may not be correctly inferred. 3Com Network Director does not read the VLAN configuration from non-3Com switches.
Page 575 140.204.232.0 and 192.168.152.0. The Switch 4007 is a Layer 3 switch, routing between the two subnets. If subnet 140.204.232.0 was discovered first and then the 192.168.152.0 subnet was discovered in a second network discovery operation, 3Com Network Director would incorrectly display the network topology as follows:...
Page 576: Spanning Tree
In general, 3Com switches only support one Spanning Tree domain. Problems with In order for 3Com Network Director to construct its map of the network, apparent network it reads the Bridge Forwarding Table from each of the switches on the loops network.
Page 577 MAC address and ignores all other ports that it has been learned on. So in the above example, pick port 1 and ignore port 24. However, this may result in 3Com Network Director building a network map that is not completely accurate. In this situation, 3Com Network Director adds the following warning to the Discovery Report.
Page 578: Reference A
13: V HAPTER ANAGEMENT Reference A The table below shows which 3Com devices have support for VLAN display and configuration in 3Com Network Director. VLAN display consists of: VLAN configuration consists of: Table 85 VLAN configuration and Display by Device Type...
Page 579: Reference B
DS Hub 500 OC hub 8/TPM OC switch 140M RAS 1500 Reference B The table below shows the maximum number of VLANs for each 3Com device: Table 86 Maximum number of VLANs by 3Com device Device Type 3Com SuperStack II Switch...
Page 580: Reference C
3Com SuperStack 3 Switch 3800 family Reference C The table below shows those 3Com devices that can be used in the Create VLAN wizard to create VLAN-based IP routing interfaces. See “Adding an IP routing interface” Table 87 3Com devices suitable for creating VLAN-based IP routing interfaces...
Page 581: Bulk Configuration
This chapter describes how the Bulk Configuration feature in 3Com Network Director can be used to configure a range of settings on one or more of the 3Com devices in a network in a single operation. Bulk Configuration can be used to: A single configuration may be applied to multiple devices of different types.
Page 582: Key Concepts
All attributes contained in a configuration template are disabled by default, and it is possible to choose which attributes to configure by enabling some or all of them, as required. Note that 3Com Network Director will only attempt to set the specified values for each enabled attribute, on the selected devices or ports, at the point the configuration template is applied, and not whilst creating or editing the template.
Page 583: Device And Port Selections
Components This section describes how to use the Bulk Configuration feature of 3Com Network Director. all devices that are selected in the map all ports attached to links that are selected in the map all ports attached to end-stations that are selected in the map all devices that are selected in the map.
Page 584: Configuration Editor Dialog Box
14: B HAPTER ONFIGURATION Configuration Editor The Configuration Editor dialog box allows the user to create, edit, and Dialog Box save configuration templates, containing the settings that are to be applied to a device or port selection. Using the Configuration Editor dialog box it is possible to: Launch the Configuration Editor dialog box by choosing either the Switch Devices…...
Page 585: Configuration Summary Tree Features
Configuration Summary Tree Features The following table shows the set of features contained in the 3Com Network Director Switch Device configuration template. Table 88 Switch Device configuration template...
Page 586: Feature Configuration Panels
14: B HAPTER ONFIGURATION The configuration summary tree provides an overview of the features available in the configuration template being edited. There is one entry in the tree for each feature panel in the configuration template. Navigate to any of the feature panels in the configuration template by selecting the associated entry, by feature name, in the configuration summary tree.
Page 587 Components Figure 315 Configuration Editor Dialog box The feature configuration panels typically display disabled attributes with the caption no change in the associated value field. When a feature attribute is enabled the associated value field changes to display the current value for the attribute, this will be the default value for the attribute unless it has previously been set to something else.
Page 588: Loading And Saving Configuration Templates
14: B HAPTER ONFIGURATION Loading and Saving Configuration Templates The configuration template currently displayed in the Configuration Editor dialog box can be saved by choosing the Save As… button beneath the configuration summary tree. Use the file chooser dialog box to find the location in which the configuration template is to be stored and then enter a name for the new file.
Page 589: Editing Device And Port Selections
Figure 316, above, shows an example of a port selection being edited. The Add Port, Remove Port and Add by type buttons are not visible when the dialog box is used to edit a device-only selection, as used with device-based configuration templates. If the Configuration Editor dialog box is being used to edit a device-based configuration template, then the Selection Editor dialog box will only show the devices in the current selection, and will allow the addition of...
Page 590 14: B HAPTER ONFIGURATION Devices will be shown in the tree, using the label that is currently being used on the map. The devices shown can be expanded to show the individual units that they contain. Devices can be removed from the selection by highlighting the desired devices in the tree and then clicking the Remove Device button.
Page 591 Components The bulk configuration operation will not attempt to configure any ports that are not marked as selected by a green tick. For convenience, ports can also be added to the selection according to their type, e.g. all connected ports, using the Add Ports by Type dialog box.
Page 592: Loading And Saving Device And Port Selections
If the units belonging to a device that is a member of a selection, are replaced or re-arranged 3Com Network Director may no longer be able to match the selection with its representation in the map.
Page 593: Applying A Configuration Template To A Device Or Port Selection
Components Applying a When you are ready to apply the configuration template, select the OK Configuration button on the Configuration Editor dialog box. The Configuration Editor Template to a Device dialog box validates each of the feature configuration panels and ensures or Port Selection that the current selection includes at least one supported device or port before allowing you to continue.
Page 594 14: B HAPTER ONFIGURATION Figure 319 Configuration Progress Dialog Box The Configuration Progress dialog box shows the progress of the overall operation in the upper progress bar, and the progress of the operation in configuring the current device in the lower progress bar.
Page 595: Configuration Summary Report
Status information for each device is shown in the table below the progress bars. The information shown depends on the stage of the configuration operation for each device, as summarized in the following table: Table 90 Device Status Information Device Status Pending Verifying device properties...
Page 596: Device Configuration Panels
14: B HAPTER ONFIGURATION The Configuration Summary report consists of two sections; the device summary section and the feature summary section. The device summary section lists every device, and port if appropriate, that was involved in the configuration operation and indicates whether any problems were encountered.
Page 597 Account Parameter Access Level The level of permission that the user has when managing the device. Levels are: security, manager and monitor. Note: security has the highest level of management permission and monitor the lowest. Community String The SNMP community string associated with the user. Maximum length 30 characters, and must be unique within the user accounts table.
Page 598 If the community strings that 3Com Network Director is using to manage a given device are changed or removed by the bulk configuration operation, the operation will immediately update the community strings...
Page 599: Add User Account Dialog Box
Components Add User Account Dialog Box Figure 321 Add User Account Dialog Box The Add User Account dialog box allows the creation of a new user account. A username, community string and access level must be provided for the new account. Optionally a login password and a set of SSH client public keys can be provided.
Page 600: Configuring Access Rights
Shell (SSH) and the console port. Select the setting for each access level and access method from the associated drop down list. 3Com Network Director does not allow the user to disable SNMP access for the security access level as this would prevent 3Com Network Director from carrying out any further configuration of the device.
Page 601 In a new configuration template the list contains a single default entry containing the IP address of the 3Com Network Director management station with a subnet mask of 255.255.255.255. Trusted IP addresses can be added to the list, one at a time, using the Add button to launch the Add Trusted Address dialog box.
Page 602: Add Trusted Ip Address Dialog Box
IP addresses. The access methods for the trusted address must be specified. 3Com Network Director does not allow the addition of an entry to the trusted IP address list using an address and subnet mask that is already...
Page 603: Configuring The Device As A Radius Client
Components Configuring the Device as a RADIUS Client The RADIUS Servers feature allows the user to define the authentication and accounting servers the network devices should use when authenticating users for device or network access. Figure 325 Radius Servers Panel The RADIUS servers parameters will only be applied as part of the configuration template if the associated checkboxes are checked.
Page 604: Configuring System Information
ONFIGURATION There is a security risk associated with configuring RADIUS secrets on the devices over the network because the SNMP protocol that 3Com Network Director uses to configure the devices is unencrypted. It is possible that a user of the network could deliberately intercept the packets sent out during the bulk configuration operation and determine from them the RADIUS secret used.
Page 605: Configuring Trap Destinations
Components Figure 326 System Information Panel The system information parameters will only be applied as part of the configuration template if the associated checkboxes are checked. To specify a string for the system name parameter choose Custom from the associated drop down list and enter the text into the field that becomes enabled.
Page 606 14: B HAPTER ONFIGURATION Figure 327 Trap Destinations Panel The trap destination table will only be applied as part of the configuration template if the associated checkbox is checked. The table defines the addresses to which the device will send SNMP traps, each entry has the following parameters: Table 93 Trap Destination Table Entries In a new configuration template the table will be empty.
Page 607: Add Trap Destination Dialog Box
Any of the trap destination entries can be removed from the list, by selecting the entries in the list and clicking the Remove button. 3Com Network Director can be configured to create a temporary entry in the trap destination table of all devices that it manages. This temporary entry will be removed by the bulk configuration operation if it is not added to the trap table in this feature panel.
Page 608 14: B HAPTER ONFIGURATION Figure 329 The Spanning Tree mode setting will only be applied as part of the configuration template if the associated checkbox is checked. The remaining parameters for this feature will only be applied as part of the configuration template if both the associated checkbox and the Spanning Tree mode check box are checked and the Spanning Tree mode is not set to Disabled.
Page 609: Configuring Igmp
Components The values for Max Age and Forward Delay Time must additionally conform to the following rules: Max Age >= 2 x (Hello Time + 1) Max Age <= 2 x (Forward Delay - 1) If necessary the feature will automatically adjust any values specified for the Hello Time, Max Age and Forward Delay parameters to ensure that the configuration conforms to the rules governing STP parameters.
Page 610: Port Configuration Panels
14: B HAPTER ONFIGURATION Figure 331 Broadcast Storm Control Panel The broadcast storm control setting will only be applied as part of the configuration template if the associated checkbox is checked. The packet rate limit setting will only be applied as part of the configuration template if the broadcast storm control check box is checked and the broadcast storm control value is set to Enabled.
Page 611 Figure 332 Port Security Panel The settings for each of the port security parameters will only be applied as part of the configuration template if the associated checkbox is checked. In addition the Port Security feature places restrictions on the values which can be set for the following parameters.
Page 612: Configuring Spanning Tree
14: B HAPTER ONFIGURATION Configuring Spanning Tree The Spanning Tree feature allows configuration of the port spanning tree protocol settings on the network devices. Figure 333 Spanning Tree Panel The settings for each of the spanning tree parameters will only be applied as part of the configuration template if the associated checkbox is checked.
Page 613: Configuring Autonegotiation
Components Figure 334 Port Administration Panel The settings for each of the port administration parameters will only be applied as part of the configuration template if the associated checkbox is checked. Configuring Autonegotiation The Autonegotiation feature allows the configuration of autonegotiation, duplex mode, port speed and flow control for the ports on the devices.
Page 614 14: B HAPTER ONFIGURATION Figure 335 Autonegotiation Panel The settings for each of the autonegotiation parameters will only be applied as part of the configuration template if the associated checkbox is checked. In addition, the Advertised Capabilities parameter will only be enabled if the Mode check box is checked and the Mode parameter is set to Auto.
Page 615: Configuring Lacp
Components Configuring LACP The LACP feature allows the user to control whether ports should automatically attempt to join link aggregations between the network devices using the Link Aggregation Control Protocol. Figure 336 LACP Panel The settings for each of the LACP parameters will only be applied as part of the configuration template if the associated checkbox is checked.
Page 616: Examples
HAPTER ONFIGURATION Examples This section provides some examples of how to use the Bulk Configuration feature of 3Com Network Director. Configuring User Following an audit of network security, it has been decided that there is a Accounts need to periodically change the passwords and community strings used by all of the network specialists.
Page 617 Add button. Enter an appropriate user, password and community in the relevant fields of the Add Account dialog box and click OK. Many 3Com devices keep an audit log of all management user sessions, providing a record of a variety of changes to their configuration. By...
Page 618 14: B HAPTER ONFIGURATION If there are many network specialists, a decision may be made to create a single account that can be shared by all of them. Click the Save As button from the Configuration Editor dialog box and save the current switch configuration template with a suitable filename, e.g.
Page 619: Configuring Network Login
Because the hot-desking area is easily accessible, it has been decided to use the Network Login feature of the 3Com Switch 4400 devices to authenticate users in this area prior to allowing them access to the company network. Primary and backup...
Page 620 Once the bulk configuration operation has successfully setup the RADIUS Server details on all of the selected switches 3Com Network Director will be ready to configure the appropriate switch ports to use the network...
Page 621 To do this: 1 Launch the Configuration Editor dialog box using the Switch Ports option from the Device > Configure menu. 2 Select the Security feature in the configuration summary tree and enable the security mode in the feature pane, as shown in Figure 341 Configuration Template Editor –...
Page 622 14: B HAPTER ONFIGURATION Figure 342 Selection Editor Dialog Box – Port Selection 6 Click the Add by Type button, and use the Add Ports By Type dialog box to add all of the edge ports belonging to the highlighted devices to the port selection.
Page 623: Useful Information And References
If the service pack release notes identify the device as being supported but the device is still shown as unsupported in the Selection Editor dialog box, then the current map may be out-of-date. 3Com recommend that a fresh discovery is run on the network.
Page 624 The attributes in this feature that relate to Rapid Spanning Tree Protocol The link state trap attribute of the port administration feature is not A license key is required for the SuperStack 3 Switch 4400 device to 3Com Network Director is unable to configure the non-default user , IGMP. , Administration...
Page 625: Key Considerations
Key Considerations Key Considerations Potential Hazards The Bulk Configuration feature is capable of effecting significant changes when using Bulk to the software configuration of the devices on the network. It is possible Configuration to severely disrupt the operation of the network through accidental misuse of this feature.
Page 626 14: B HAPTER ONFIGURATION...
Page 627: Prioritizing Network Traffic
Overview This chapter describes how 3Com Network Director is used to prioritize network traffic on the 3Com devices on your network. By enabling prioritization, you can specify the importance of certain types of network traffic (such as traffic to and from database servers or NBX phone traffic) over others.
Page 628: Key Concepts
15: P HAPTER RIORITIZING Key Concepts Traffic prioritization has three basic aims: In order to achieve the aims of traffic prioritization across the network, each Switch in the network must provide facilities for: Classification Classification identifies different types of traffic by examining the contents of a packet or set of packets.
Page 629: Marking
Classification is configured on a device as a set of rules. Each rule defines a particular way of identifying the type of traffic. For example, a rule may state that SNMP traffic can be identified as UDP packets that have either the source or the destination UDP port set to the value 161.
Page 630 Packets sent across the network must first pass through a complex classification device (such as a 3Com SuperStack 3 Switch 4400) so that they can be marked appropriately. This enables simple classification devices to prioritize packets.
Page 631: Queuing
The boundary nodes (shown in the Topology example) are complex classification devices and can perform the appropriate marking of packets. This means that any interior nodes that are simple classification devices are still able to determine the correct traffic prioritization to perform.
Page 632 15: P HAPTER RIORITIZING The example illustrates what happens when a device receives a set of packets of different types that are destined for the same port: Figure 344 Queue Servicing Mechanism If these queuing operations are performed on all devices in the network then the overall effect is to speed up the flow of important traffic through the entire network.
Page 633: Dropping
Dropping The action of dropping allows the device to prevent blocked traffic from flowing on the network. This is achieved by discarding (dropping) packets that are identified via classification as traffic that should be blocked. Service Levels The overall set of actions that are performed as a result of a particular classification are commonly known as a service level.
Page 634: Configuring The Network For End-To-End Traffic Prioritization
15: P HAPTER RIORITIZING Service levels enable easy identification of end-to-end treatment of traffic. If the example was to be configured appropriately on the devices throughout the network, it would be possible to say that database traffic is treated as business critical throughout the network. Settings within a service level may vary from device to device depending upon the device’s capabilities.
Page 635: Components
Components The following section describes the principles of traffic prioritization using 3Com Network Director. Prioritize Network The Prioritize Network Traffic Wizard enables you to simplify traffic Traffic Wizard prioritization configuration on your network without the need to manually set up classifiers, dropping, queuing and marking.
Page 636: Configuration Type Step
499 for more information on configuring VLANs using 3Com Network Director. Configuration Type Step You can select which of the supported 3Com devices in your network you wish to configure as follows (See Figure 345): Figure 345 Prioritize Network Traffic Wizard - Configuration Type...
Page 637: Nbx Step
Device Type Configuration — applies the selected configuration to all of the devices of a specific type in the current map. 3Com recommends that you only use this configuration type when you have added a large number of devices of a particular type to your network and you wish to configure them to participate in a previously configured end-to-end traffic prioritization.
Page 638 655 for definitions of the service levels used by 3Com Network Director. When you are configuring 3Com devices that are not capable of complex application classification, 3Com Network Director configures these devices to identify traffic with the Voice DiffServ codepoint. Traffic that...
Page 639: Servers Step
You can select servers for prioritization or blocking. In terms of the Prioritize Network Traffic Wizard, a server can be any device with an IP address regardless of whether or not the device is present in the 3Com Network Director map. This enables you to perform actions such as blocking traffic to and from streaming media servers that are external to your company or to prioritize traffic to and from your partners websites.
Page 640: Applications Step
ETWORK RAFFIC There are several servers that 3Com Network Director will not allow you to select for blocking. In addition, there are various problems that may arise due to selecting servers for blocking. For more information “Potential Hazards When Blocking Traffic To and From Servers”...
Page 641: Application Field Values
Service Levels” page 655 by 3Com Network Director. When you are configuring 3Com devices that are not capable of complex application classification, 3Com Network Director configures these devices to identify traffic with the Business Critical DiffServ codepoint. Traffic that matches this classifier rule is also mapped to the Business Critical service level.
Page 642: Finish Step And Progress
Finish on the Configuration Summary screen. After selecting Finish, the Prioritize Network Traffic Wizard configures each of the supported 3Com devices in the map to prioritize network traffic according to your selected configuration. During the configuration of the devices, the Configuring Prioritization dialog is shown to indicate the progress.
Page 643: Network Prioritization Report
The devices in the network that were successfully configured. The devices in the network that the wizard failed to configure. 3Com Network Director reports a reason for each failure. Detailed information about the configuration applied to the devices, including any restrictions as to what the devices will do in terms of prioritization and blocking.
Page 644: Examples
Whenever you run the Prioritization Configuration report, 3Com Network Director retrieves the configuration information directly from the supported 3Com devices in your network. As this report must poll each of the devices for data it may take several minutes to run.
Page 645: Prioritizing Nbx Voice Traffic
3 Click the Device type configuration radio button and select 3Com XRN Fabric from the drop-down list. 4 Click Next to show the Servers step in the wizard and continue selecting Next until the Configuration Summary step is shown. 5 Click Finish to apply the previously applied configuration to your XRN core.
Page 646: Prioritizing Traffic To And From A Sap Server
6 When you reach the Configuration Summary step, select Finish to apply the updated configuration to the supported 3Com devices in the map. Prioritizing Traffic To You have noticed that during periods of network congestion, several of and From a SAP your users have had difficulties accessing your SAP server.
Page 647 Figure 351 Setup Servers - Prioritizing Traffic To and From a SAP Server Example 4 In the Setup Servers dialog, select Add to display the Add Server dialog (as shown in Figure 352) enabling you to add the SAP server. Figure 352 Add Server - Prioritizing Traffic To and From a SAP Server Example 5 Type the name of the SAP server (or the function that it performs) into the Name: field and type either the DNS name or the IP address of the server...
Page 648: Blocking Access To A Streaming Audio Server
15: P HAPTER RIORITIZING If you have entered a DNS name then 3Com Network Director will resolve the DNS name to an IP address for you. 6 Select OK in the Setup Servers step to return to the Servers step where the SAP server is now listed in the Normal list.
Page 649: Prioritizing A Video Conferencing Application
Refer to information. 10 When you reach the Configuration Summary step, click Finish to apply the updated configuration to the supported 3Com devices in the map. Prioritizing a Video The CEO is holding a video conference with direct reports over the Conferencing corporate intranet.
Page 650 15: P HAPTER RIORITIZING Figure 353 Applications - Prioritizing a Video Conferencing Application Example 4 To add the video conferencing application to the list of applications, select Setup Applications from the Applications step to display the Setup Applications dialog in 5 Click Add to display the Add Application dialog as shown in ETWORK RAFFIC...
Page 651 Figure 354 Add Applications - Prioritizing a Video Conferencing Application Example 6 To specify the application definition, type the name of the application in the Name field. 7 To add each of the classifiers to the application, click Add to display the Add Classifier dialog as shown in Figure 355 Add Classifier - Prioritizing a Video Conferencing Application Example...
Page 652: Restricting Access To Snmp
14 When you reach the Configuration Summary step, click Finish to apply the updated configuration to the supported 3Com devices in the map. Restricting Access to For security purposes you wish to restrict the use of SNMP in your SNMP network to the PCs used by the network managers.
Page 653 3 To add the first network manager’s PC to the list of servers, select Setup Servers from the Servers step to display the Setup Servers dialog in Figure 357. Figure 357 Setup Servers - Restricting Access to SNMP Example 4 In the Setup Servers dialog, click Add to display the Add Server dialog in Figure 358, enabling you to add the first network manager’s PC.
Page 654 IP address of the PC into the DNS name/IP address: field. Click OK to add the PC and return to the Setup Servers screen. If you have entered a DNS name then 3Com Network Director will resolve the DNS name to an IP address for you.
Page 655 Refer to information. 11 When you reach the Configuration Summary step, click Finish to apply the updated configuration to the supported 3Com devices in the map. “Resource Warnings” page 657 Examples...
Page 656: Useful Information And References
This means that if VLANs are not being used then the information about the importance of traffic cannot be conveyed from a complex classification device to a simple classification device using this marking mechanism. See information on configuring VLANs using 3Com Network Director. ETWORK RAFFIC User Priority...
Page 657: Diffserv Codepoint Field
DiffServ Codepoint The DiffServ Codepoint field, defined in the IETF (Internet Engineering Field Task Force) RFC 2474, allows information about the quality of service requirements of a packet to be carried with the packet as it traverses the network. There are no restrictions on what any of the codepoint values mean as it is the choice of the network manager or the network management tool to decide the local meanings, although there are recommended uses for some of the values.
Page 658: Determining Field Values For Applications
The IANA website also contains a list of the known IP protocol numbers. 3Com Network When 3Com Network Director configures devices that are capable of Director Classifier performing complex application classification to identify traffic as NBX Rules for NBX Phone...
Page 659: 3Com Network Director Service Levels
3Com Network 3Com Network Director uses the service levels on the devices it Director Service configures as shown in Levels Table 104 Service Levels Used by 3Com Network Director Service Level Voice Business Critical Drop The classifiers created by 3Com Network Director are mapped to these...
Page 660 15: P HAPTER RIORITIZING Table 105 Configuration Levels for Supported 3Com Devices Device Type SuperStack 3 Switch 4200 Family SuperStack 3 Switch 4400 Family SuperStack 3 Switch 4900 SuperStack 3 Switch 4900SX Superstack 3 Switch 4924 Superstack 3 Switch 4950...
Page 661: Key Considerations
Key Considerations The following section provides assistance when configuring traffic prioritization on your network: Resource Warnings Resource warnings occur for the following reasons: If either of these situations occur a Resource Warning screen is displayed prior to the Configuration Summary step. The screen will list each distinct problem that has been detected as shown in Each device type has a certain number of resources available for classification which are managed in different ways by different device...
Page 662 15: P HAPTER RIORITIZING Table 106 Resource Warnings Resource Warning Content The type of devices that are affected by this problem A description of the problem A list of all devices that are affected by this problem Details of the problem The reduced configuration that will be applied if the problem is not resolved...
Page 663: Why Errors Can Occur When Adding A Server
PC it is running on is configured to use and that 3Com Network Director was able to contact when it was started. This means that you will...
Page 664: Servers That Cannot Be Selected For Blocking
Blocking 3Com Network Director will not prevent you from blocking traffic to and from a device that is not listed in the map. If any of your network infrastructure devices are not listed in the map you will need to check that you have not accidently selected one of these devices for blocking before configuring traffic prioritization on your network.
Page 665: Potential Hazards Of Blocking Application Traffic
Potential Hazards of Blocking traffic belonging to applications is a powerful feature for Blocking Application preventing the use of undesired applications on your network. However, Traffic if the wrong application definitions are used for blocking an application this can cause severe problems on your network. There are two reasons why blocking a particular application definition may cause problems on your network: The application definition may not be narrow enough to prevent...
Page 666: Potential Hazards Of Blocking Snmp, Http And Telnet
Blocking an application whose definition includes the ports used by these protocols would prevent 3Com Network Director from functioning correctly and prevent you from manually accessing these devices. 3Com Network Director will prevent you from blocking any application whose definition includes classifiers for the SNMP protocol unless you have first selected the PC that it is running on for prioritization.
Page 667: Upgrading Device Software
Overview This chapter describes how 3Com Network Director can be used to manage the agent software on 3Com devices across your network and to ensure that the 3Com devices on your network are running the latest agent software available to you.
Page 668: Key Concepts
EVICE OFTWARE 3Com Network Director contains a built in TFTP server that is started TFTP requests are accepted only from the IP address of the devices included in the current Agent Update operation. Only requests for file downloads are permitted.
Page 669: Components
Figure 360. This step also allows you to import a new agent that may have been downloaded from the 3Com website or provided on a product CD. To import an agent, click Agent Import to launch the Agent Import dialog box. This dialog box lets you select an agent image file to import.
Page 670: Update Type Step
EVICE OFTWARE 361. Update all 3Com devices — updates all devices in the network that meet the following criteria: Supported by Agent Update Not running the latest version of available agent software already If this option is selected you can schedule when to perform the operation, by selecting Next from the Update Type screen.
Page 671: Specify Devices And Agent Versions Step
Update by type to latest list box. The Switch 610s and 630s are not listed separately, but will appear when you select all by type for 1100 and 3300 respectively. 3Com Network Director does not distinguish between the 610/1100 and 630/3300.
Page 672 The device table contains the following information about each device: EVICE OFTWARE Name — specifies the name or IP address of the 3Com device. Type — specifies the 3Com family name of the listed device. Units — specifies the number of units in a stack or distributed fabric.
Page 673: Change Agent Version Step
Components Change Agent Version Step Click Change Version on the Specify Devices and Agent Versions wizard step to launch the dialog box shown in Figure 363. The dialog box will list all agent versions that Agent Update has imported for the selected device using the Agent Import tool.
Page 674: Scheduling Step
16: U HAPTER PGRADING EVICE OFTWARE Scheduling Step You can specify a time to carry out the operation. The default option in this step is Now which will perform the Agent Update operation as soon as the wizard has finished as shown in Figure 364.
Page 675: Summary Step
If the Custom option was selected, the list should contain those devices selected on the Specify Devices and Agent Versions step. Devices can also be removed from the list by 3Com Network Director for the following reasons: The device is not supported —...
Page 676: The Progress Dialog Box
16: U HAPTER PGRADING The Progress Dialog Box The Progress dialog box displays when an Agent Update operation is due to start. It displays the list of the devices to be upgraded and the status of each update as it progresses as shown in Figure 366 Agent Update Wizard - Progress Dialog Box The updates are performed one at a time, with the lower of the two progress bars showing the progress of the current device and the top...
Page 677: Agent Update Events
The previous and new versions are shown for each device. A list of the devices that could not be updated by the operation. The current and required agent versions are shown for each device. 3Com Network Director will also report a reason for the failure and suggest possible resolutions.
Page 678: Agent Audit Report
EVICE OFTWARE A list of the 3Com devices on your network that are running the latest agent release available for them. A list of the 3Com devices on your network that are running up-to-date agent software.
Page 679: Detecting And Downgrading A Problem Device
6 Click Next to display the Summary step and check that the details are all correct before clicking Finish to start the operation. 7 View the scheduled tasks list to ensure the new task is present by clicking Tools > Scheduled Tasks. 8 Leave the application running and next morning, check that there is a Summary dialog box indicating that the Agent Update operation was successful.
Page 680: Useful Information And References
The supported devices are listed in Agent Image 3Com agent image files follow a naming convention that helps you to Filenames identify the device family that the agent can be applied to. Some types of device will reject attempts to update them using agent files that do not follow the naming scheme.
Page 681: Key Considerations
Following Agent following conditions: Update 3Com recommends that you use your usual network monitoring tools to check that there are no general problems with your network before trying to troubleshoot problems with the device. 3Com Network Director cannot perform Agent Update operations whilst There are network problems preventing you from contacting the device.
Page 682: Repeated Timeouts
The default location of 3Com Network Director is: C:\Program Files\3Com\Network Director 3Com recommends that you alter the timeout and retry values in small increments, since large changes to these values can result in adverse performance of the Agent Update operation.
Page 683 This value controls the number of times a single TFTP packet transmission is retried by the internal TFTP server. Increment the value to increase the number of TFTP retries. 5 Restart 3Com Network Director and try to update the problem device again. Key Considerations...
Page 684 16: U HAPTER PGRADING EVICE OFTWARE...
Page 685: Using 3C Omm Netwomrk Directomr Om N Irectora Multi -Site Netwomrk
Overview This chapter describes how to use 3Com Network Director to discover, monitor and manage multi-site networks. This chapter covers the following topics: Key Concepts Multi-Site Networks A multi-site network is a network whose components (for example, switches, hubs, routers, servers and end stations) are distributed over...
Page 686: Issues With Managing A Multi-Site Network
Due to the additional latency caused by WAN links, discovery of remote sites may take much longer than the discovery of the local site. One of the attributes that 3Com Network Director uses to monitor the status of devices in your network is their responsiveness (this is shown by the IP Ping Service monitor).
Page 687: Configurable Timeouts
3Com Network Director may conclude that some remote devices are not responding at all. This will affect not only the monitoring of these devices but will also prevent 3Com Network Director from performing operations such as Network Discovery, Backup, Restore, and Agent Update on these devices.
Page 688: Configurable Retries
Configurable Retries If a request sent by 3Com Network Director times out then this may be due to either the request or the response being dropped while traversing the network. As a result, 3Com Network Director cannot immediately conclude that a device is not responding if it fails to respond to a request.
Page 689: Configurable Poll Rates For Active Monitoring
To avoid this situation, 3Com Network Director allows you to control the rate at which actively monitored devices are polled. By decreasing the poll rate you can reduce the amount of traffic generated by active monitoring.
Page 690: Configurable Discovery Options
WAN links, reducing the impact that monitoring has upon these links. Configurable Discovery Options In order to discover your network, 3Com Network Director performs a series of steps in order to find devices, determine their configuration and calculate how they are interconnected. Most of these steps involve generating traffic on your network.
Page 691: Components
When 3Com Network Director discovers a router in your network it determines which, if any, of the active interfaces on the router are WAN interfaces. The supported interface types are listed in “Supported WAN...
Page 692: Manual Layout Of Wan Topology
17: U HAPTER SING Manual Layout of If you have further details of the WAN topology in your network, such as WAN Topology which interfaces on which routers correspond to each other for point-to-point connections, then you may wish to correct the default manner in which the WAN topology is displayed in your map to reflect these details.
Page 693: Grouping Logically Connected Wan Interfaces Together
Close the Properties dialog box by clicking OK. A cloud will be automatically added to the middle of the link between the two routers. 3Com Network Director automatically separates WAN links into two using clouds to allow more detailed monitoring to be performed on WAN links.
Page 694 17: U HAPTER SING b Locate the cloud icon in the Add Map Item dialog box, select it and c Close the Add Map Item dialog box. d Select the new cloud in the map. e Launch the Properties dialog box for the new cloud by selecting f In the Custom Name field of the General tab enter a suitable name for g Close the Properties dialog box by clicking OK.
Page 695: Restoring Wan Interface Representations After A Manual Layout Of Wan Topology
a In the map, select one of the links between one of the routers that contain the WAN interfaces that are logically connected to each other and the cloud that is being used to represent the logical group. b Launch the Properties dialog box for that link by selecting Properties from the right-click menu of the link.
Page 696: Manual Layout Of Wan Topology And Rediscovery
If you have deleted this cloud from the map then it will be recreated automatically in order to accommodate this. Monitoring WAN 3Com Network Director ensures that all WAN links are displayed in the links map terminating at a cloud. For example, if you manually alter the...
Page 697: Configuring Wan Link Monitors
3Com Network Director allows you to set thresholds in excess of the theoretical maximum value for the monitor. This is particularly useful for WAN links that have complex service level agreements or policies applied to them.
Page 698: Disabling Monitors On Wan Links
So, for example, if there are 2 retries configured for a particular request type, this means that 3Com Network Director will make up to three attempts to contact a device with that request type: the initial request and then the two retries.
Page 699: Specifying Retries And Timeout Periods At The Whole Map Level
There is a three level hierarchy in this mechanism: Whole Map: The Retry/Timeout tab in the Tools > Options dialog box allows you to configure the number of retries and timeout periods for requests sent to any device in the map. Unless you explicitly override the settings at the subnet or device level devices will use the settings you specify here.
Page 700 Increasing the number of retries or the timeout period in the DNS Values frame affects all DNS requests made by 3Com Network Director. It is not possible to specify different numbers of retries or timeout periods for...
Page 701: Specifying Retries And Timeout Periods At The Subnet Level
IP Ping requests: IP ping requests are used during the IP Ping stage of Network Discovery. See Network Discovery stage. SNMP requests: 3Com Network Director many purposes, including several stages of the discovery process, many of the monitors and operations such as Backup, Restore and Agent Update.
Page 702 17: U HAPTER SING ETWORK IRECTOR ULTI ETWORK Figure 369 Retry/Timeout Tab By default all subnets will inherit their settings from the Tools > Options dialog box. In order to change the number of retries and timeout periods for a subnet you will need to uncheck the Use defaults from Tools > Options dialog box option, after which you can set the number of retries and timeout periods for the subnet.
Page 703: Specifying Retries And Timeout Periods At The Device Level
At the device level, the Retry/Timeout tab of the Properties dialog box only allows you to change the number of retries and timeout period for the type of requests that 3Com Network Director uses to manage and monitor the device. For example, if a device has SNMP capabilities then you will be able to configure the number of retries and timeout period for SNMP requests.
Page 704: Specifying Retries And Timeout Periods In The Network Discovery Wizard
ULTI ETWORK Some devices, such as most end stations, cannot be managed directly by 3Com Network Director and so do not have configurable settings for numbers of retries and timeout periods. Specifying Retries and Timeout Periods in the Network Discovery...
Page 705: Determining Appropriate Retry And Timeout Periods
Determining Appropriate Retry and Timeout Periods Increasing the number of retries or the timeout period increases the length of time that it will take before 3Com Network Director concludes that a device is not responding. This can slow down the time it takes...
Page 706 ULTI ETWORK For example, by default 3Com Network Director will retry a failed IP ping request an additional 2 times, and give each IP ping request a 2 second timeout period. This means that, during the IP Ping stage of a Network Discovery, it will take 3Com Network Director 6 seconds before it concludes that an IP address is not going to respond.
Page 707 30000 ms. In such situations it is recommended that you do not specify a timeout period less than 6000 ms. 3Com Network Director can generate historical reports on devices in your network. These reports will include IP Ping response times and, for DNS servers, DNS response times.
Page 708: Issues And Techniques When Configuring The Retry/Timeout Hierarchy
Before starting to configure the retry/timeout hierarchy, it is important to correctly identify the local and remote sites with regards to the PC that 3Com Network Director is running on. Where possible, each site should be identified by the IP subnets that are unique to that site.
Page 709: Configuring Monitoring Modes And Poll Rates
However, you will double the amount of time it will take before 3Com Network Director determines if there is a problem with the device.
Page 710: Determining Monitoring Modes And Poll Rates
Ethernet Link Error Rate monitor, which will reduce the amount of traffic generated by the monitoring of that link. However, 3Com Network Director will no longer be able to show you the state of, or generate events based upon, the Ethernet Link Error Rate monitor on that link, and will not be able to show errors in any historical reports generated for the link.
Page 711 However, SNMP traps only monitoring mode does not allow 3Com Network Director to determine when the device has stopped responding, and so can delay remedial action.
Page 712 17: U HAPTER SING ETWORK IRECTOR ULTI ETWORK In order to avoid this you should use SNMP traps only monitoring of such a remote site. Alternatively, do not monitor the remote site unless there are issues that you wish to investigate and then stop monitoring the site immediately after you have completed your investigations.
Page 713: Issues And Techniques When Configuring Monitoring Modes And Poll Rates
Before starting to configure the monitoring modes and poll rates hierarchy, it is important to correctly identify the local and remote sites with regards to the PC that 3Com Network Director is running on. Where possible, each site should be identified by the IP subnets that are unique to that site.
Page 714: Configuring Discovery
17: U HAPTER SING In order to cope with this situation you will need to first determine the most common configuration. In the example given above, this would likely be the devices monitored in response monitoring mode. The monitoring modes and poll rates for the subnet should be configured to match the settings selected as the most common.
Page 715 In addition, 3Com Network Director has a limit of 5,000 devices within a single map. If you have a large network then it may not be possible to display all of the important devices in a single map unless you filter out those devices that are less important to you.
Page 716 IRECTOR ULTI ETWORK In order to discover a single device, 3Com Network Director queries the device for information about its features, current configuration and other devices that are known to it. This can generate a large amount of traffic, particularly for complex devices.
Page 717: Scheduling Discoveries In Multi-Site Networks
It is important that you take this into consideration when determining the scheduling of network discoveries. If you are running 3Com Network Director on a single site network, or if your map only covers the local site, then you may be able to rediscover the network every hour without much impact upon other users of the network.
Page 718: Configuring Monitor Thresholds
Discovery you can do so by canceling the Network Discovery from within the Network Discovery Progress dialog box. Configuring Monitor 3Com Network Director can monitor various services on devices, Thresholds including FTP, HTTP, SMTP, POP3, DNS and NFS on any end station and IP Ping on all IP devices, by sending appropriate queries to the devices.
Page 719: Examples
If it is critical that a device at the local site has a fast response time then you may wish to use this same technique to lower the service monitor thresholds for the device from their defaults. Examples Grouping Frame Your network contains three WAN interfaces that are all connected to the Relay Interfaces same frame relay cloud.
Page 720 17: U HAPTER SING Figure 373 Find Dialog Box - Default WAN 5 Click Find. 6 When the search completes, double-click on the entry for the Default WAN cloud in the results list. The map zooms to the Default WAN cloud. Figure 374 Find Dialog Box - Double-Click on Default WAN Cloud Entry 7 Close the Find dialog box.
Page 721 Figure 375 Map Zoomed into Default WAN Cloud 8 To view the devices surrounding the Default WAN cloud, zoom out from the map by clicking the Zoom out button in the toolbar, repeatedly. 9 Launch the Add Map Item dialog box by selecting Edit > Add Map Item. 10 Locate the cloud icon in the Add Map Item dialog box, select it and drag it onto the map, near to the Default WAN cloud.
Page 722 17: U HAPTER SING Figure 376 Adding a Cloud by Drag and Drop 11 Close the Add Map Item dialog box. 12 Select the new cloud in the map. 13 Launch the Properties dialog box for the new cloud by selecting Properties from the right-click menu of the link.
Page 723 Figure 377 Properties Dialog Box - General Tab 15 Close the Properties dialog box by clicking OK. 16 Locate the three routers that contain the WAN interfaces that are connected to the frame relay cloud. 17 Select their links to the Default WAN cloud. Ensure that nothing else is selected in the map.
Page 724 17: U HAPTER SING ETWORK IRECTOR ULTI ETWORK Figure 378 Map - Links Selected 18 Select Edit > Delete, and confirm the deletion. Figure 379 Map - Links Deleted...
Page 725 Examples 19 Select one of the routers and the new cloud in the map. Figure 380 Map - Router and New Cloud Selected 20 Select Edit > Add Link to link the router and the new cloud together.
Page 726 17: U HAPTER SING Figure 381 Map - Router and New Cloud Linked 21 Select the new link. 22 Launch the Properties dialog box for that link by selecting Properties from the right-click menu of the link. 23 Select the Ports tab. ETWORK IRECTOR ULTI...
Page 727 Figure 382 Properties Dialog Box - Ports Tab 24 Determine whether the router is shown in the From Port frame or the To Port frame. 25 Click the Set button in the frame that shows the router to launch the Set Port dialog box.
Page 728 17: U HAPTER SING 27 Close the Set Port dialog box by clicking OK. 28 Close the Properties dialog box by clicking OK. 29 The text in the center of the cloud will automatically change to indicate that it is a frame relay cloud. Figure 384 Map Showing Labelled Cloud 30 Repeat steps 11 –...
Page 729 Examples Figure 385 Map Showing Multiple Links 31 The map no longer shows the other WAN interfaces for the WAN router that has multiple active WAN interfaces. To rectify this, run a rediscovery of one of the subnets that the router is on by selecting the subnet in the map and selecting Tools >...
Page 730 17: U HAPTER SING ETWORK IRECTOR ULTI ETWORK Figure 386 Rediscovered Map 32 Finally, relayout the map by selecting View > Relayout Map.
Page 731: Discovering A Remote Site
You wish to discover one of your remote offices so that you can monitor Site and manage the important devices at that site from within 3Com Network Director. 1 You examine your network information in order to identify the remote...
Page 732 17: U HAPTER SING first VLAN, the database server on the second VLAN and the NBX call processor on the third VLAN. 2 Your network information also indicates that the remote site has a particularly slow connection to the rest of your company’s network. You decide that the default numbers of retries and timeout periods will be unsuitable for the remote site and so you will need to determine appropriate values for the site.
Page 733 Figure 389 Network Discovery Wizard 5 Click Next to move onto the Specify Subnets step. 6 In the Specify Subnets step, click Add. This launches the Add Subnet dialog box. Examples...
Page 734 17: U HAPTER SING ETWORK IRECTOR ULTI ETWORK Figure 390 Add Subnet Dialog Box 7 In the Add Subnet dialog box enter the subnet address and mask of the subnet associated with the first VLAN.
Page 735 Figure 391 Add Subnet Dialog Box - Subnet Address and Mask 8 Select the Discover custom ranges: radio button. 9 Click Add to launch the Add Range dialog box. Figure 392 Add Range Dialog Box 10 Edit the Start IP address, setting it to the first IP address in the subnet. Examples...
Page 736 17: U HAPTER SING Figure 393 Add Range - Start 11 Edit the End IP address, setting it to the tenth IP address in the subnet. Figure 394 Add Range - End 12 Click OK to add the new range to the list of ranges to discover on the subnet.
Page 737 Examples Figure 395 Add Subnet Dialog Box - Discover Custom Ranges Selected 13 The Start IP address is already set to the first IP address in the subnet, so edit the End IP address so that it is set to the tenth IP address in the subnet.
Page 738 17: U HAPTER SING ETWORK IRECTOR ULTI ETWORK Figure 396 Add Subnet Dialog Box - End IP Address Edited 14 Uncheck the Use defaults from Tools > Options dialog box option.
Page 739 Examples Use Defaults Figure 397 Add Subnet Dialog Box - Option Unchecked 15 Enter the appropriate values in the retries and ms timeout fields, from the numbers of retries and timeout periods that you determined for the various request types.
Page 740 17: U HAPTER SING ETWORK IRECTOR ULTI ETWORK Figure 398 Add Subnet Dialog Box - Retries and MS Timeouts 16 Click OK to add the subnet to the list of subnets to discover...
Page 741 Figure 399 Network Discovery Wizard - Subnet Added 17 Click Add to launch the Add Subnet dialog box again. 18 In the Add Subnet dialog box enter the subnet address and mask of the subnet associated with the second VLAN. 19 Select the Discover custom ranges: radio button.
Page 742 17: U HAPTER SING different devices. See page 309 site. Figure 400 Network Discovery Wizard - Monitor Core Devices and Links 28 Click Next to move onto the Community Strings step. 29 If the SNMP community strings on any of the devices that you are about to discover are set to different values from the defaults then enter details of those community strings in this step.
Page 743 Figure 401 Network Discovery Wizard - NBX Voice Network 32 Click Next to move onto the NBX Call Processors step. 33 If you have changed the administrator username or password of your NBX call processor from the factory defaults then select the Custom option and enter the appropriate username and password.
Page 744 17: U HAPTER SING Figure 403 Network Discovery Wizard - Discovery Options 35 To simplify the display of the remote site you decide that you do not wish MAC-only devices to be created. To do this first uncheck the Use defaults from Tools >...
Page 745 Figure 405 Network Discovery Wizard - Only IP Devices Checked 37 Click Next twice to move through the rest of the wizard to the Summary step. Figure 406 Network Discovery Wizard - Summary Step 38 Check that the details of the discovery are correct before clicking Finish to discover your remote site.
Page 746: Configuring Service Monitoring Thresholds Using Historical Reports
17: U HAPTER SING Configuring Service The event log for your network shows that the mail server at one of your Monitoring remote sites has been consistently slow to respond to queries. After Thresholds Using investigation you determine that the mail server is not heavily loaded, is Historical Reports quick to respond to queries at the remote site itself, and is being reported as slow to respond purely because of the latency caused by the WAN links...
Page 747 Figure 408 Find Dialog Box - Fields Populated 5 Click Find. 6 When the search completes, double-click on the entry corresponding to the mail server in the results list. The map zooms to the mail server. Figure 409 Find Dialog Box - Results Examples...
Page 748 17: U HAPTER SING 7 Close the Find dialog box. Figure 410 Map Zoomed to Search Results 8 Launch a historical report for the mail server by selecting Historical Report from the right-click menu for the mail server. 9 Click on the Weekly Graphs (30 minute average) shortcut to view the graphs for the last week.
Page 749 Examples Figure 411 Weekly Graphs (30 Minute Average) 10 Examine the weekly graphs in the historical report to determine the normal response time range for each of the three services that you are monitoring on the mail server. For example, looking at the SMTP Response time graph in detail shows that the normal response time is in the range 1200 –...
Page 750 17: U HAPTER SING Figure 412 SMTP Response Time Similar checks against the Response Time and POP3 Response Time graphs show that these too have normal response times in the range of 1200 – 1400ms. 11 Launch the Live Graphs dialog box for the mail server by selecting Live Graphs from the mail server’s right-click menu.
Page 751 Figure 414 Threshold Settings Dialog Box 14 Edit the High stress threshold value and set it to 2000ms. This sets the Warning stress threshold value to 1500ms, which is above the normal response time range for this service monitor. By setting the thresholds so that the normal response time range is below the warning threshold you ensure that the monitor will not generate events when the mail server is responding normally.
Page 752: Useful Information And References
17: U HAPTER SING Useful Information and References Supported WAN 3Com Network Director provides support for several different families of Interface Types WAN interface types. These are detailed in the table below: Table 109 WAN Interface Types ETWORK IRECTOR ULTI...
Page 753 WAN Family ifType xDSL adsl(94) radsl(95) sdsl(96) vdsl(97) msdsl(143) idsl(154) hdsl2(168) shdsl(169) mvl(191) reachDSL(192) FDDI fddi(15) Frame Relay frameRelay(32) frameRelayService(44) frameRelayInterconnect(58) frameRelayMPI(92) voiceOverFrameRelay(153) frDlciEndPt(193) ISDN basicISDN(20) primaryISDN(21) isdn(63) lapd(77) MPLS mplsTunnel(150) mpls(166) propPointToPointSerial(22) ppp(23) async(84) pppMultilinkBundle(108) SMDS smdsDxi(43) smdsIcip(52) SONET sonet(39) sonetPath(50) sonetVT(51)
Page 754: Key Considerations
Some of the devices at the site may be discovered as MAC-only devices. 3Com Network Director may fail to retrieve full details of some or all of the devices’ features and configurations. 3Com Network Director may be unable to correctly determine the topology of the site.
Page 755: Problems With Discovering Wan Routers
If you try increasing the numbers of retries and timeout periods to allow of the overhead of the discovery process then be aware that this will increase the time it takes 3Com Network Director to determine that a device at that site has stopped responding when it is monitoring or managing that device.
Page 756 The WAN router may have an access control list (ACL) configured that prevents management from the device from any unauthorized devices. If the PC that 3Com Network Director is running on is not listed in the ACL then 3Com Network Director will be unable to fully discover the router.
Page 757: Nbx Support
NBX S Overview This chapter describes how to administer a 3Com NBX voice system using 3Com Network Director. 3Com Network Director gives you the option to discover equipment from the 3Com SuperStack3 NBX and 3Com NBX 100 networked telephony solutions.
Page 758: Key Concepts
This section outlines the key concepts of managing an NBX system using 3Com Network Director. How 3Com Network In the 3Com Network Director Network Discovery, you can specify if you Director Discovers the have a NBX system on your network. If you do, you can then specify the...
Page 759: Nbx Call Processor
Consoles NBX applications (pcXset and ConneXtions) The NBX chassis is not displayed directly on the 3Com Network Director map. Instead, NBX Call Processors and line cards are represented individually as described below: NBX Call Processor 3Com Network Director shows the NBX Call Processor on the map. The NBX Call Processor is shown correctly connected to the rest of the network, and in the appropriate IP subnet for its configured IP address.
Page 760: Analog Terminal Adapter And Analog Terminal Card
For a 4-port Analog Terminal Card, each port uses a separate icon. NBX Phones and Attendant Consoles 3Com Network Director detects all types of NBX phones, as well as attendant consoles. NBX Applications 3Com Network Director also detects PCs running the pcXset (softphone client) and ConneXtions (H.323 Gateway) applications.
Page 761: Components
Select the Yes radio button and click Next if you have a NBX system on your network. NBX Call Processors Step This step allows you to specify the username/password that 3Com Network Director should use to communicate with the NBX Call Processors on your network.
Page 762 Figure 417 NBX Call Processors Step of the Network Discovery Wizard The NBX Call Processors step displays the following settings: During the discovery process, when 3Com Network Director finds an NBX Call Processor on the network, it will try the following...
Page 763: Add Nbx Call Processor/Modify Nbx Call Processor
The username/password in the table of NBX Call Processors, if you specified the NBX Call Processor's IP address in this table. The username/password in the Custom section, if: The NBX Call Processor's IP address is not present in the table You specified a username/password in the Custom section The factory default username/password, if: The NBX Call Processor's IP address is not present in the table...
Page 764: Properties Dialog Box
You can add NBX Call Processor details to your list even if the IP address of the NBX Call Processor is not in the IP address ranges for this discovery. 3Com Network Director will only attempt to communicate with NBX Call Processors which it considers to be part of the current network discovery.
Page 765: Monitoring The Phone Network
As the NBX call processor controls the incoming and outgoing phone calls on your voice system, when the NBX Call Processor stops responding to the IP Ping Service and its icon on the map turns red, 3Com Network Director will also turn the icons for all monitored phones on the map managed by this processor to red, to indicate that they cannot receive or make calls.
Page 766: Monitoring A Line Card
18: NBX S HAPTER UPPORT Because 3Com Network Director polls the NBX Call Processor rather than the phone itself to retrieve the phone status, even phones with no IP address assigned can be monitored. If the NBX Call Processor is not responding, the whole phone network will be unavailable.
Page 767 Components Figure 420 Context Menu for the NBX Call Processor This will select all phones and line cards on the map that this NBX Call Processor manages. If several NBX Call Processors are selected, and the Select Related Phones option is used, all phones and line cards managed by the selected items will be highlighted If the NBX system on the map was not successfully discovered, selecting this menu option will display the warning message in...
Page 768: Finding Out Which Nbx Call Processor Is Associated With A Phone
NBX Call Processor. Figure 422 Context Menu for the Phone or Line Card As a result, the 3Com Network Director map will navigate and zoom into the NBX Call Processor that manages this phone or line card.
Page 769: Understanding Voice-Related 3Com Network Director Events
Figure 423 No NBX Call Processor is Associated With the Selected Phone Understanding 3Com Network Director notifies you of network problems that might Voice-related 3Com affect the voice system by logging events in the events system. Network Director The main events that might be generated are: Events To view the list of events that have been logged, select the Alerts/Events >...
Page 770: Events Related To Phones
IP address assigned. This event resolves when the phone responds to the IP Ping Service again. The phone status has changed to Offline: 3Com Network Director polled the NBX Call Processor and found that the phone Status is now Offline.
Page 771: Launching Netset For A Phone Or Line Card
NBX Call Processor icon on the map. See > Options Menu Option” this option. 3Com Network Director opens NetSet in your default web browser and automatically logs in using the administrator username and password you specified during the network discovery. As a result, the NetSet home page will be displayed.
Page 772: Examples
18: NBX S HAPTER UPPORT Examples Discovering Several You want to discover several NBX Call Processors on your network NBX Call Processors simultaneously or discover your whole NBX system at once, where each Simultaneously NBX Call Processor uses a different password. To discover multiple NBX Call Processors: 1 Start a new discovery using the File >...
Page 773: Useful Information And References
Useful Information and References NBX system The 3Com NBX communications system delivers robust call-processing features coupled with telephony applications over your network. 3Com NBX systems are designed for: If you want to learn more about NBX products, you can visit the Products Offering Area on the 3Com web site at: http://www.3com.com/products/.
Page 774: Nbx Call Processor
18: NBX S HAPTER UPPORT NBX Call Processor The NBX Call Processor is at the heart of your telephony system. It manages incoming and outgoing calls to and from the phones on your network. It also has call-processing features built-in, such as voice mail and automated attendant.
Page 775: The Phone Was Added Manually
The phone was added manually If you added a phone on the map using the Edit > Add Map Item menu option, there will be no NBX Call Processor associated with it. As a result, the Go to Related NBX Call Processor and Web Management menu options will not work.
Page 776: The Wrong Username/Password Was Specified For The Nbx Call Processor
Device > Web management menu option. This will launch NetSet in your default browser. If you are not required to log in, this means 3Com Network Director is using the correct username and password for the NBX Call Processor. If you are required to log in, this means 3Com Network Director is not using the correct username and password for the NBX Call Processor and explains why no phones are displayed on the map.
Page 777: There Is A Problem With The Http Service For The Nbx Call Processor
There is a problem with the HTTP service for the NBX Call Processor 3Com Network Director uses the HTTP protocol to communicate with the NBX Call Processor. If this service is malfunctioning, 3Com Network Director could fail to retrieve the list of phones for the NBX Call Processor.
Page 778: Frequently Asked Questions
The phone was removed from the network 3Com Network Director reads the list of phones from NetSet. If the list of phones in NBX NetSet is out-of-date, and some of the phones listed have been removed from the network, these phones will be shown on the 3Com Network Director map, unconnected.
Page 779: The Phone Cannot Be Reached
If the network device that the phone is connected to has not been discovered by 3Com Network Director then it will not be possible to connect the phone to the rest of the topology. If this is the case then you...
Page 780: How Do I Change The Label Of A Phone Or Line Card
HAPTER UPPORT For phones that are using the default user name, 3Com Network Director will show a label using the extension number, rather than showing a label of New User, which could cause a number of phones to use the same label.
Page 781: Overview
Overview This chapter describes how 3Com Network Director can be used to manage the software configuration of the 3Com devices on your network. You can use Backup, Restore and Setup to: The following topics are covered in this chapter: ACKING ONFIGURATIONS Save the software configuration of your 3Com devices.
Page 782: Key Concepts
Key Concepts The Backup feature is designed to help you store the software configuration of your 3Com devices. The Backup feature associates each saved backup with the source device from which the backup was taken, by generating a unique physical identification for the source device.
Page 783: Backup Components
This section describes how to use the Backup feature of 3Com Network Components Director. Device Backup You can create and manage backup files for any of the supported 3Com Wizard devices on your network. Select Device > Backup to open the Device Backup Wizard.
Page 784 EVICE ONFIGURATIONS Backup all 3Com devices — backs up all of the supported 3Com devices in the current map. 3Com recommends that you use this backup type on the first occasion that you use the Device Backup Wizard. By choosing this backup type you will ensure that you have a saved configuration for all your supported devices.
Page 785: Specify Devices To Backup Step
Backup Components Specify Devices to Backup Step This step of the wizard is only displayed if you have selected the Custom option on the Backup Type step. If you selected devices in the network before starting the Device Backup, those devices are listed on this page by default as shown in Figure 425 Figure 425 Specify Devices to Backup...
Page 786: Backup Identification Step
19: B HAPTER ACKING Figure 426 Specify Telnet Login Information Step If this step is displayed, you will need to provide the Telnet username and password for the device you have selected to backup. The username and password may be left blank. Backup Identification Step You can manage your device configuration backups by labelling your backups and providing comments for them as shown in...
Page 787: Scheduling Step
Figure 427 Device Backup Wizard - Backup Identification You must provide a label, using a maximum of 20 characters, to be associated with all backups created by the current backup operation. You can, if you wish, provide a longer description of the backups in the comments field in this step.
Page 788: Summary Step And Progress
19: B HAPTER ACKING EVICE ONFIGURATIONS Figure 428 Device Backup Wizard - Scheduling You can review or cancel a scheduled Device Backup operation from the Scheduled Tasks dialog box which can be launched from Tools > Scheduled Tasks. Summary Step and Progress Unless you have chosen to schedule the Device Backup operation for a future date, the operation begins once you have selected Finish on the Summary step.
Page 789: Device Backup Reports
See page 786 The devices that could not be backed up. 3Com Network Director reports a reason for each failure. You can view the Backup Summary report at any time after the operation has completed from the History tab of the Reports dialog box, launched from Tools >...
Page 790: Backup Audit Report
See“Understanding Backup Files” contents of your backup files. Backup files are best viewed using Microsoft Internet Explorer 5.0 (or later). 3Com strongly recommends that you do not edit the contents of any backup files. EVICE ONFIGURATIONS The devices on your network that have one or more backups available.
Page 791: Restore Components
Restore This section describes how to use the Restore feature of 3Com Network Components Director. Device Restore You can apply a saved backup to either the device from which the backup Wizard was taken or to a replacement device that has the same physical configuration.
Page 792: Specify Device Being Replaced Step
19: B HAPTER ACKING EVICE ONFIGURATIONS Figure 429 Device Restore Wizard - No Backups Found If your target device is not a replacement for another device and there are no backup files associated with your target device, the Device Restore Wizard cannot continue.
Page 793: Specify Backup To Use Step
Restore Components Figure 430 Device Restore Wizard - Specify Device Being Replaced The table shows the name of all devices that have one or more existing backups and have the same physical configuration as your target device. The list of devices is taken from the saved backup files. The device that is being replaced does not have to be present in the current map.
Page 794: Specify Telnet Login Information Step
19: B HAPTER ACKING Figure 431 Device Restore Wizard - Specify Backup To Use The table provides the following information about each backup to help you identify the one to apply to the target device: Specify Telnet Login Information Step The Specify Telnet Login Information step is only displayed if the device that you have chosen to restore requires Telnet login information, in order to perform the restore operation, as shown in...
Page 795: Summary Step And Progress
Figure 432 Specify Telnet Login Information Step If this step is displayed, you will need to provide the Telnet username and password for the device you have selected to restore. Username — specifies the username used to log in to the selected devices, via Telnet.
Page 796: Device Restore Event
Tools > Reports. Setup Components The following section describes how to use the Device Setup feature of 3Com Network Director. Device Setup Wizard You can apply a software configuration to one or more target devices. The software configuration you choose to apply to the target device can be either the software configuration of a device on your network or a software configuration saved in a backup file.
Page 797: Configuration Source Type Step
Setup Components devices) you choose to set up must have the same physical configuration as the source device of the software configuration. The Device Setup Wizard can be launched from Device > Setup. Configuration Source Type Step You can choose whether the software configuration that will be applied to your target devices should come from either a live device on your network or a saved backup as shown in Figure...
Page 798: Specify Source Backup Step
19: B HAPTER ACKING EVICE ONFIGURATIONS Figure 434 Device Setup Wizard - Specify Source Device From this step you can select any one of the supported devices in the current map. The device you select here will be used as the source of the software configuration applied to your target devices.
Page 799: Specify Devices To Setup Step
Setup Components Figure 435 Device Setup Wizard - Specify Source Backup From this step you can select any one of the backups you have created using the Device Backup operation. The backup you select here will be applied to your target devices. Specify Devices to Setup Step This step presents all the supported devices in your current map that have the same physical configuration as the source of the software...
Page 800: Summary Step And Progress
19: B HAPTER ACKING EVICE ONFIGURATIONS Figure 436 Device Setup Wizard - Specify Devices To Setup Select the target devices that you wish to apply the chosen software configuration to. Summary Step and Progress The Device Setup operation is ready to begin once you select Finish on the Summary step as shown in Figure 437.
Page 801 Setup Components Figure 437 Device Setup Wizard - Summary Before any configuration takes place, the Device Setup operation displays a warning dialog box. The dialog box advises you to ensure that the target devices are isolated from your network before proceeding. You must acknowledge this warning before continuing.
Page 802: Device Setup Event
The details of the source device or backup that provided the software configuration. The devices that were successfully configured by the Device Setup operation. The devices that could not be configured by the Device Setup operation. 3Com Network Director reports a reason for each failure.
Page 803: Examples
Select Next on the Introduction step to display the Backup Type step as shown in 3 Select the Backup all 3Com devices radio button to back up all of the supported 3Com devices in the network, then select Next.
Page 804 19: B HAPTER ACKING 5 Select Next to display the Scheduling step, then select the Later radio button to schedule the Device Setup operation to begin after you leave in the evening. Enter the time using the 12 hour clock, bearing in mind the setting for a.m./p.m.
Page 805: Restoring To A Replacement Device
Restoring to a There has been a hardware failure on one of the core devices in your Replacement Device network. The failed device is one that you have earlier backed up as part of your disaster recovery plan. You have a replacement device with the same physical configuration as the failed device and you want to configure the replacement device and substitute it for the failed device.
Page 806: Deploying A Group Of Devices
19: B HAPTER ACKING Figure 440 Specify Device Being Replaced Example 6 Choose the name of the device that has suffered the hardware failure from the list of devices shown. 7 Click Next to display the Specify Backup To Use step and select the most recent backup available for the failed device from the list of available backups.
Page 807 configure a device with an IP address, refer to the user documentation that is supplied with your device. 2 Configure one of the devices with the desired port security and VLAN settings. This will be referred to as the source device. By giving the source device an easily identifiable system name at this stage, you will be able to find the source device more easily when using the Device Setup Wizard.
Page 808 19: B HAPTER ACKING 8 Select Next to display the Summary step and select Finish to start the Device Setup operation. You must wait until the operation has completed successfully. 9 Now that all of the new switches have the desired port security and VLAN settings, you can configure each of the switches with any individual settings that they require.
Page 809: Useful Information And References
If the service pack release notes identify your device as being supported, but the device is still shown as unsupported in the Backup or Setup Wizard, then the current map may be out of date. 3Com recommends that you refresh the map and try again.
Page 810: Supported Device Parameters
19: B HAPTER ACKING The Layer 3 module that is available for use with the Switch 1100 and Switch 3300 family of devices will not be configured by the Device Restore or Setup operations. The presence of these modules is recorded as part of the physical configuration stored in the backup file for a device, but the software configuration of the module is not saved.
Page 811: Understanding Backup Files
Switch 4005 Switch 4007/4007R Wireless LAN Access Point 8000 Managing Backup 3Com Network Director saves all backup files to the following directory Files on your hard disk drive: <INSTALL LOCATION>\backups The default install location of 3Com Network Director is: C:\Program Files\3Com\3Com Network Director 3Com Network Director does not delete backup files.
Page 812: Key Considerations
This happens if: Backup files that are discarded are not deleted from your hard disk but are moved to the following directory: <INSTALL LOCATION>\backups\lost The default install location of 3Com Network Director is: C:\Program Files\3Com\3Com Network Director EVICE ONFIGURATIONS The IP address of the source device at the time the backup was made.
Page 813: Potential Hazards When Using Restore And Setup
3Com strongly recommends that you isolate target devices from the rest of the network and connect them directly to the management station before using Restore or Setup.
Page 814 19: B HAPTER ACKING EVICE ONFIGURATIONS...
Page 815: Live Update
3Com Network Director is up-to-date, enabling you to take advantage of the latest bug-fixes and device support. The Latest 3Com Product News notifies you of new 3Com products and also contains articles on how to make the most of the features on your existing devices.
Page 816: Key Concepts
This section describes the keys concepts of Live Update. Connection Type Live Update server: Service Packs A Service Pack is an installable software component that keeps 3Com Network Director and related applications such as 3Com® Router Manager and 3Com® Switch Manager up-to-date. It provides updates such as:...
Page 817: Components
Live Update Setup The Live Update Setup Wizard is launched the first time you use Live Wizard Update. You can choose the way 3Com Network Director connects to the Internet and specify the proxy settings. Connection Type Step From the Connection Type step you can select the preferred method to...
Page 818: Use Custom Settings Step
Internet Explorer or a version of Netscape Navigator earlier than 4.79, and will default to using a direct connection to the Internet for other web browsers. If 3Com Network Director cannot detect the default web browser settings then you can configure the proxy settings manually by selecting the Use custom proxy settings radio button.
Page 819: Summary Step
Proxy Server — either the DNS name or the IP address of your proxy server. Proxy Port — the port number that 3Com Network Director should use to connect to your proxy server. My proxy server requires authentication — select this option if your proxy server requires authentication.
Page 820 Use custom proxy settings in the Connection Type step. Proxy Port — the port that 3Com Network Director will connect to on the proxy server. This information is displayed if: you selected Use Web browser settings and your default browser is...
Page 821: Live Update Select File Groups Dialog Box
Username — the username that 3Com Network Director will use to connect to the proxy server. This information is displayed only if you selected Use custom proxy settings in the Connection Type step and selected the My proxy server requires authentication checkbox in the Use Custom Settings step.
Page 822: Status
General tab of the Options dialog box but you have clicked on Live Update or selected the Tools > Live Update menu option. Searching for available updates — 3Com Network Director is connecting to the Live Update server and looking for the updates that are relevant to you.
Page 823: Table Of Available Updates
Failed to retrieve update details — the initial transaction between 3Com Network Director and the Live Update server failed. In this case, an error message is also displayed to help you identify the cause of the problem. Table of Available Updates The table in the Live Update - Select File Groups dialog box lists the types of update available for download.
Page 824: File Group Details
The title of the dialog box corresponds to the file group selected. For example, if the file group selected is 3Com Network Director Update, the title of the dialog box will be Select File Group - 3Com Network Director Update.
Page 825: Download Progress
Figure Figure 447 Download Progress If the file group is 3Com Network Director Update, this is the version of the update as well as the main version it applies to. If the file group is Latest 3Com Product News, 3Com Router Manager Updates or 3Com Switch Manager Updates, the version is not applicable (N/A).
Page 826: Changing The Download Settings
Manager Updates, a message box is displayed indicating where the files have been downloaded to on your PC. If the update is a 3Com Network Director update, you are required to restart 3Com Network Director. If you choose to restart, the update installs automatically.
Page 827 Internet and your default browser is not configured to use that proxy, or your default browser is not supported by 3Com Network Director. This is also recommended if your proxy server requires authentication.
Page 828 Live Update. Select the Show the Live Update Setup Wizard next time checkbox, as shown in be displayed next time. Proxy Server — the name or IP address that 3Com Network Director uses to connect to the Internet. This field is only available when Custom proxy settings is selected.
Page 829: Live Update Activity Report
Figure 449 Options - General Live Update Activity The Live Update Activity report can be used to review the download Report status of all the software updates downloaded using Live Update. To view the report: 1 Select the Tools > Reports menu option. 2 In the Generate Reports tab, select the Live Update Activity report.
Page 830: Examples
Live Update server. 4 The Live Update - Select File Groups dialog box will display any available updates. If 3Com Network Director is up-to-date, you will get the message seen in Figure need take no action. Figure 450 If an update is available, it will be listed in the dialog box.
Page 831: Updating The Connection Information
7 Click OK to return to the Live Update -Select File Groups dialog box. 8 Click OK to download the update. 9 When the download is complete you will be asked to restart 3Com Network Director. Click Yes to restart. The downloaded update will be installed automatically.
Page 832: Solution 1 - Automatic Configuration Using The Live Update Setup Wizard
Solution 1 - Automatic Configuration using the Live Update Setup Wizard This is the preferred method if your default browser is supported by 3Com Network Director and is configured to use the proxy server. 1 Select the Tools > Options... menu option. 2 Click the General tab.
Page 833: Solution 2 - Manual Configuration Using The Options Dialog Box
Solution 2 - Manual Configuration using the Options Dialog Box This is the preferred method if your default browser is not supported by 3Com Network Director or if your browser is not configured to use the proxy server. 1 Select the Tools > Options... menu option.
Page 834: Updating 3Com Router Manager
5 Select the 3Com Router Manager Updates file group in the table of available updates and click More Details... to view the details on that update. This will open the Live Update - Select File Groups - 3Com Router Manager Updates dialog box.
Page 835: Useful Information And References
2 Write down the proxy server settings (proxy server name/IP address and proxy port). If available, also write down the username and password. 3 In 3Com Network Director, open the Tools > Options dialog box and select the Internet tab.
Page 836: Not Enough Space On The Disk
Cannot Find the A description of this problem is as follows: Downloaded 3Com After downloading a 3Com Router Manager update, you did not make a Router Manager note of the filename for the downloaded update and cannot find this Updates on Disk update on your PC.
Page 837 Once you know the file name, you can find the update in the folder where 3Com Router Manager updates are located. The 3Com Router Manager Updates files are downloaded to the patches folder in the 3Com Network Director install directory (usually C:\Program...
Page 838 20: L HAPTER PDATE...
Page 839: A Supported Devices
Service Pack. In particular, newly available unit types in device families listed in the following sections may not be supported unless you have installed the latest Service Pack. Bulk Configuration Table 113 Bulk Configuration: Supported 3Com Devices and Minimum Agent Versions UPPORTED Bulk Configuration...
Page 840: Vlan Configuration
Switch 3300 family of devices will not be configured by the bulk configuration operation. However, the presence of these modules does not affect the level of support available for the parent device. VLAN Table 114 VLAN Configuration: Supported 3Com Devices and Minimum Agent Configuration Versions EVICES...
Page 841: Backup, Restore And Setup
The 3Com Switch 4007 and 3Com CoreBuilder 9000 do not support VLAN configuration on the EME card, on RAP ports or on resilient link ports. Backup, Restore The devices and minimum agent versions supported by Backup, Restore and Setup and Setup are shown in...
Page 842: Restrictions Backing Up And Restoring 3Com Devices
License Key. Restrictions Backing Up and Restoring 3Com Devices 1 The Device Restore and Device Setup operations may need to initialize target devices before applying the selected configuration.
Page 843 2 Device Backup, Restore and Setup operations may fail if the target device has multiple IP addresses, but not all of these addresses have been detected by 3Com Network Director. This can occur if the device is allocated additional IP addresses after the network map is discovered.
Page 844 Switch 1100/3300 units, and one of the units has been replaced since the device was last backed up. If this situation occurs, please contact 3Com Customer Support. 7 Switch 4400 and Switch 4005 - The progress bar for the Device Restore...
Page 845: Agent Update
This will appear as a failure in the Wizard. To complete the restore, manually reboot the device. Agent Update Table 116 operation. Table 116 Agent Update: Supported 3Com Devices and Minimum Agent Versions shows the devices that are supported by the Agent Update Device Type 3Com SuperStack II Switch 610...
Page 846: Restrictions Updating 3Com Agent Software
3Com SuperStack II Dual Speed Hub 500 3Com CoreBuilder Switch 3500 and modules 3Com OfficeConnect Hub 8/TPM 3Com OfficeConnect Switch 140M 3Com SuperStack II Remote Access System 1500 Base Unit 3Com SuperStack II Switch 3900 family 3Com SuperStack II Switch 3800 3Com SuperStack II Switch 9100...
Page 847 2 Switch 1100/3300 running agent version 2.52 or lower - There may occasionally be issues when updating devices from very early versions of the agent software. In particular, when updating 3Com SuperStack II Switch 1100/3300 stacks with VLANs configured from versions earlier than 2.52, you may lose communication with the device part way...
Page 848 IP address. 11 The Agent Update operations may fail if the target device has multiple IP addresses, but not all of these addresses have been detected by 3Com Network Director. This can occur if the device is allocated additional IP addresses after the network map is discovered.
Page 849: Rmon
3Com Network Director's inventory of imported agents can be found on your system, in the following directory:<install_dir>\TftpBoot Note that <install_dir> refers to the directory where you installed 3Com Network Director.
Page 850: Device View
User Guide for the device itself. There are known issues with RMON support in agent version 1.10 of the 3Com Router 3000 and 3Com Router 5000 families. Please upgrade to at least version 1.20 if you wish to use RMON monitoring.
Page 851 Device View Supported Devices 3Com SuperStack II 9300 3Com SuperStack II Desktop Switch 3Com SuperStack II Dual Speed Hub 3Com SuperStack II Hub 10 3Com SuperStack II Hub 100 3Com SuperStack II PS Hub 3Com SuperStack II Switch 1000 3Com SuperStack II Switch 1100...
Page 852: Device Warranty
3Com Router 5009 3Com Router 5231 3Com Router 5640 3Com Router 5680 3Com Router 3012 3Com Router 3013 3Com Router 3015 3Com Router 3016 3Com Router 3018 121: Supported Devices 3Com CoreBuilder Switch 3500 and modules 3Com LinkBuilder FMS 10BT/FMS 1/FMS II...
Page 853 Supported Devices 3Com LinkSwitch 1000 3Com LinkSwitch 2200 3Com LinkSwitch 3000 3Com NetBuilder II, SuperStack II NetBuilder 20x, SuperStack II NetBuilder 42x 3Com Network Jack 200 3Com OfficeConnect Hub 8/TPM 3Com OfficeConnect Switch 140M 3Com SuperStack 3 Server Load Balancer family...
Page 854: General Restrictions With Supported Devices
A: S PPENDIX UPPORTED General Restrictions By default, SNMP is disabled on the 3Com Switch 7700. To allow full with Supported identification and topology by 3Com Network Director, enable SNMP V1. Devices Until SNMP V1 is enabled, 3Com Switch 7700 devices will be represented on the Network Director map as Generic IP devices.
Page 855 This appendix describes how 3Com Device View enables you to monitor and set up the 3Com hubs, switches, bridges/routers and remote access devices on your network. The following is covered in this appendix: About Device View Management Support Matrix EVICE...
Page 856: About Device View
Device View manages 3Com small office, system and multi-function hubs, switches, remote access devices and power systems. For a list of supported devices in this release of 3Com Network Director refer to Management This section details the devices that you can manage with Device View...
Page 857 3Com SuperStack ARPS 3Com SuperStack II 3900-24 3Com SuperStack II 9300 3Com SuperStack II Desktop Switch 3Com SuperStack II Dual Speed 3Com SuperStack II Hub 10 3Com SuperStack II Hub 100 3Com SuperStack II PS Hub 3Com SuperStack II Switch 1000...
Page 858 B: 3C PPENDIX EVICE 3Com SuperStack 3 Switch 3300 3Com SuperStack 3 Switch 4400-24 3Com SuperStack 3 Switch 4400-48 3Com Superstack 3 Switch 4400 3Com SuperStack 3 Switch 4400 3Com SuperStack 3 Switch 4400 3Com SuperStack 3 Switch 4900 3Com SuperStack 3 Switch 4900...
Page 859: Register Your Product To Gain Service Benefits
3Com Extended Warranty and Professional Services is available at http://www.3com.com/ Contact your authorized 3Com reseller or 3Com for additional product and support information. Troubleshoot You will find support tools posted on the 3Com web site at Online http://www.3com.com/ BTAINING UPPORT FOR YOUR RODUCT http://eSupport.3com.com/...
Page 860: Telephone Technical Support And Repair
Downloads of software initially purchased with the product. In order to access these Software Updates you must first register your product on the 3Com web site at First time users will need to apply for a user name and password. A link to...
Page 861 To send a product directly to 3Com for repair, you must first obtain a return authorization number (RMA). Products sent to 3Com, without authorization numbers clearly marked on the outside of the package, will be returned to the sender unopened, at the sender’s expense. If your...
Page 862 BTAINING UPPORT FOR YOUR Country Telephone Number Latin America Telephone Technical Support and Repair Antigua 1 800 988 2112 Argentina 0 810 444 3COM Aruba 1 800 998 2112 Bahamas 1 800 998 2112 Barbados 1 800 998 2112 Belize...
Page 863: Operating System
This appendix details the system requirements needed in order to utilize 3Com Network Director. Operating System There are two supported platforms for 3Com Network Director which are: Web Browser 3Com Network Director supports the following web browsers: There is no support for any version of Netscape 6.
Page 864: Hardware
YSTEM Hardware The minimum hardware specification required for 3Com Network Director is: The recommended hardware specifications for 3Com Network Director is: Allow approximately 2Mb per device for data logging. EQUIREMENTS IBM PC or compatible, with 500Mhz Pentium III processor 512MB RAM...
Page 865: Overview
Overview This appendix contains examples of the following type of report: EPORT XAMPLES Discovery Report Misconfigurations and Optimizations Report...
Page 866: Discovery Report Example
The help links will only work if the link is clicked while the report is being viewed in a browser running on a PC with 3Com Network Director installed - if the user clicks on a help link while viewing a report on a PC without 3Com Network Director installed, the user will see the browser's standard missing link page (this varies from browser to browser).
Page 867: Discovery Report Example Content
Discovery Report This section discusses the contents of a typical 3Com Network Director Example Content Discovery Report. The following devices stopped responding while 3Com Network Director attempted to read topology information from them This is as it says. The device must have responded at some point for the application to have discovered it.
Page 868 MAC addresses were obtained for the device. 3Com Network Director was unable to write to the following devices, in order to get them to perform operations that could lead to a more accurate topology detection.
Page 869: Warnings
The following devices have one or more ports that have failed self-test Listings of the devices are provided as described. Warnings 3Com Network Director displays this warning if it detects the situation where a MAC address has been learned on different ports on different VLANs. Warning The MAC address of one device has been seen or "learned"...
Page 870: Network Configuration 1
866 Appendix E: R EPORT XAMPLES Network Configuration 1 Bridging between VLANs can cause the same MAC address to appear on different ports. See example below. If the host on VLAN1 sends a packet to the server on VLAN2, the packet first goes to the switch and is learned on port X in VLAN1.
Page 871: Network Configuration 2
Discovery Report Example Content Network Configuration 2 Spanning Tree has been disabled on this network and instead VLANs are used to avoid a network loop. This means a user can run traffic over all the links on their network as opposed to having some blocked by Spanning Tree.
Page 872: Misconfigurations And Optimizations Report
Although this is a perfectly legal configuration and the VLAN will still work, it is good practice to use the same VLAN ID consistently when configuring a VLAN. 3Com Network Director will treat these as three separate VLANs. As a result, the Show VLANs toolbar and the Find dialog...
Page 873: Inconsistent Vlan Naming
Misconfigurations and Optimizations Report If the same VLAN ID had been used on all three switches, for example ID=4, then 3Com Network Director would only list one VLAN in the Show VLANs toolbar and the Find dialog: Accounts (ID=4) A more likely use of inconsistent VLANs is shown below: One router is using VLAN ID=2 for subnet A, the other router is using VLAN ID=3 for the same subnet.
Page 874: Spanning Tree Fast Start
The same VLAN (ID=2) is configured on three switches with three different names. 3Com Network Director will choose one of the configured names to represent the VLAN. This name will be used to display the VLAN in the Show VLANs toolbar and the Find dialog.
Page 875: Setting Up Vlans With Distributed Resilient Routing
Misconfigurations and Optimizations Report If a port connected to a single end station is set to disable, whenever the attached end station is powered up, the Spanning Tree protocol will treat this as a topology change event. This results in the Filtering Database entries being flushed and temporary flooding of traffic occurs until the addresses are re-learned.
Page 876: Misconfiguration And Optimization Reports
Webcache Redirection and configure the Webcache caching mode. Clicking on these hyperlinks will send a request to 3Com Network Director that will result in the operation being performed. A response page will be returned to the user, this response will contain the status of the operation.
Page 877 Webcache operating in transparent modes This report will be generated when a device with a Webcache redirection capable agent and a Webcache are discovered. Webcache redirection is not enabled but the Webcache is operating in transparent mode. When Webcache redirection is not enabled the Webcache should be operating in forward proxy mode.
Page 878 Appendix E: R EPORT XAMPLES Webcache Redirection - redirection table is full This report will be generated when a device capable of performing Webcache Redirection and a Webcache are discovered but the redirection table maintained by the device is full and this table does not contain an entry for the Webcache listed.
Page 879 Misconfigurations and Optimizations Report No Free Redirection Table Entries The switch is already redirecting to a Webcache (4400) or a number of Webcaches (49xx) and there are no more free cache entries in the internal redirection table, therefore Webcache Redirection cannot be enabled to this Webcache. This will result in the following status text being returned to the client browser: Unable to redirect web traffic to this Webcache.
Page 880 Webcache Redirection from being enabled has occurred. For example, the community strings have been changed on the switch and 3Com Network Director can no longer write to the device. This will result in the following response being returned to the client browser: Unable to configure Webcache redirection.
Page 881 MIB object could not be written to, for example, the community strings have been changed on the Webcache and 3Com Network Director can no longer write to the device, the following response will be returned to the client browser: There was an error whilst attempting to update the configuration of the Webcache.
Page 882 There was some problem which prevented 3Com Network Director writing the new cache mode to the device. For example, the community strings that 3Com Network Director has for the device are no longer valid - the device community strings have been changed and 3Com Network Director is unaware of the new strings.
Page 883 If the webCacheRestartTrafficServer MIB object could not be written to, for example, the community strings have been changed on the Webcache and 3Com Network Director can no longer write to the device, the following response will be returned to the client browser: There was an error whilst attempting to update the configuration of the Webcache.
Page 884: Webcache Redirection And Vlans
ëChange mode to transparentí hyperlink, however the shutdown and restart of this process takes approximately 20 seconds to complete. Therefore 3Com Network Director does not wait for successful completion of this stage before responding to the client.
Page 885 Once the webCacheRestartTrafficServer MIB object has been successfully written to and the restart is underway, the client will receive one of responses in the section above from 3Com Network Director. If the traffic server restart fails, the Webcache internal recovery mechanism will attempt to restore the device.
Page 886 Appendix E: R EPORT XAMPLES If Layer 4 Redirection is not enabled the following sections can be generated: Enable Layer 4 Redirection OR Can't enable Layer 4 Redirection - no free cache entries. Webcache operating in transparent mode (as opposed to forward proxy)
Page 887 DDING You can add your own SNMP trap decodes to 3Com Network Director by editing the file: <Installation Directory>\templates.ini 3Com Network Director reads this file when it starts, and any trap decodes it contains are added to the built-in trap decodes. If any errors...
Page 888 PPENDIX DDING Remedies can also be added to an explanation by using the format: These are shown in the More Detail dialog box as bulleted text, and can be used to suggest remedies for the trap. An example of a remedy is shown in the given below.
Page 889 All of the fields in a trap decode support the use of variables that are replaced in-line when an event is generated for the trap in the following manner: {n} will be replaced with the nth varbind of the trap, where n is numbered from 0 upwards.
Page 890 F: A PPENDIX DDING ECODES For example, the following would be valid trap decode definitions: ;a3Com_swModuleVerMismatchNotification [1.3.6.1.4.1.43.47.2.1.0.57] name= a3Com_swModuleVerMismatchNotification description= Unit software version {2} mismatch. Expected version is {1} explanation= This trap is sent when the software versions on two units \ in the stack do not match.\ <remedy>Update the agents running on the units in the stack so they are \...
Page 891 DDING RANSLATIONS 3Com Network Director can convert the first six digits of a raw twelve digit MAC address into a vendor name. You can enable this feature by checking the Translate MACs option in the General tab of the Tools >...
Page 892 <vendor> and <description> fields. For example, 3Com-Corporation is valid, but 3Com--Corporation is not (where “-” indicates a space character). <description> is a field where you can provide your own description of the translation.
Page 893 For example, the following would be valid trap decode definitions: ;a3Com_swModuleVerMismatchNotification [1.3.6.1.4.1.43.47.2.1.0.57] name= a3Com_swModuleVerMismatchNotification description= Unit software version {2} mismatch. Expected version is {1} explanation= This trap is sent when the software versions on two units \ in the stack do not match.\ <remedy>Update the agents running on the units in the stack so they are \ running the same version</remedy>...
Page 894 G: A MAC A PPENDIX DDING DDRESS ENDOR RANSLATIONS...
Page 895: Ssh Client
NTEGRATING AN By default, Network Director allows you to launch web and Telnet management against any device which supports these administration interfaces. Network Director also has built-in support for other management applications supported by specific device types (see information). Network Director does not include any default support for devices which support SSH (Secure SHell) administration.
Page 896 H: I SSH C PPENDIX NTEGRATING AN LIENT For example, if your client expects to be called using: myClient -ip <ip address> -verbose, your batch file might contain: myClient -ip %1% -verbose...
Page 897 NDEX Numbers 802.1Q VLANs 502 about dialog 48 access rights configuring 596 activating 52 activation key 48 losing 54 activation wizard 49 active monitoring 276 active monitors poll rate 298 add trap destination dialog box 603 add trusted IP address dialog box 598 add/edit report wizard 463 adding items map 202...
Page 898 aggregated links configure 871 alert system components 364 overview 364 tokens 367 alerts 325 attaching to devices and links 366 configuring 366 SNMP trap 369 when phones stop working 768 analog terminal adapter 756 analog terminal card 756 application field values prioritizing network traffic 637 applications prioritizing network traffic 636...
Page 899 3Com devices 805 supported devices 841 useful Information and references 805 backups none found 787 bandwidth demand for 392 blocking cannot select server 660 servers 635, 659 broadcast storm control configuring 605 Bulk Configuration 577 bulk configuration examples 612...
Page 900 630 configuring the storage of monitoring history for events 360 configuring VLANs VLANs configuring 499 connection to the 3Com server 490 connection type live update 812 controlling per-event smart event analysis 355 controlling smart event analysis 352...
Page 901 exporting reports to 456 CSV format exporting events list to 337 custom configuration 633 custom proxy settings live update 812 custom settings 814 data resolutions 386 data source usage 389 database 391 file format 396 management 398 date backup 790 default browser 814 default location map 207...
Page 902 configuration source type 793 setup components 792 specify devices to setup 795 specify source backup 794 summary and progress 796 wizard 792 device sizing 96 device table name 668 new 668 not supported 668 SW not available 668 type 668 units 668 device tree 233 aggregated link 235...
Page 903 Find 192 history view 427 live graphs 280 live update select file groups 817 more detail 286 more details 344 properties 229 launching 230 structure 231 report 458 RMON host view 436 RMON matrix view 445 selection editor 584 threshold settings 356 DiffServ codepoint 630 field 653 directed pings 99...
Page 904 live update 821 download settings changing 822 dropping prioritizing network traffic 629 edit VLANs wizard 552 empty historical report 400 end station icons 161 end-station 230 end-stations not displayed on the map 771 engine live update 812 errors backup, restore and setup 809 event correlation 324 event suppression 325 event system configuration 349...
Page 905 related to phones 766 related to the NBX call processor 765 resolution 323 severities 321 severity colors 323 SNMP trap-based 321 types 320 undeleting 373 understanding voice-related 765 viewing the unresolved events for a subnet 370 working with 319, 332 events list no events shown 382 events list find dialog box 338...
Page 906 deleted events 343 last number of days 342 name 340 resolved 342 severity 341 filter description 343 filter dialog box 339 filter has excluded all events 383 filter status bar 343 filtered view trace path 190 Find dialog box 192 find links search by options 197 finding items...
Page 907: Inconsistent Vlan Naming
add, delete 429 community string 428 history entries 429 update rate 428 view 428 Host group 405 HostTopN group 405 how backup files are discarded discarding backup files 808 HTTP hazards of blocking 662 icons 153 device 158 end station 161 network infrastructure 159 subnets 169 telephony solution 160...
Page 908 launching NetSet NBX call processor 766 phone or line card 767 launching the threshold settings dialog box 356 license key 48, 53 license required license key 805 line card monitoring 762 link 230 link monitoring 279 link monitors 389 linking items map 204 links finding 197...
Page 909 MAC Addresses translation 177 main window 61 features 63 management web 474 managing backup files 807 manual layout of map 201 manually modifying map 202 manually resolving events 334 adding items 202 automatic relayout 201 components 156 creation 133 default location 207 deleting items and links 204 icons 153 keeping up-to-date 205...
Page 910 313 IP Ping monitoring 277 items suitable for 279 line card 762 link 279 NBX call processor 761 non-3Com devices 279 phone 761 phone network 761 problems starting 315 service polling 278 SNMP MIB data retrieval 277...
Page 911 more details dialog box 344 event tab 345 graphs tab 346 trap decode tab 348 name device table 668 name filter 340 navigating to event sources in the map 332 navigation 182 using the tree 187 telephony components finding 198 voice traffic prioritization 641 NBX applications 756 NBX Call processor...
Page 912 470 password 815, 817 phone 230 added manually 771 phone network how 3Com Network Director discovers the 754 how 3Com Network Director monitors the 756 how 3Com Network Director represents the 754 monitoring 761 phones events related 766...
Page 913 menu 165 plot points showing 290 poll rate active monitors 298 poll rates 293, 298 port device tree 235 port administration configuring 608 port configuration panels 606 port security configuring 606 ports free 457 potential hazards bulk configuration 621 restore and setup 809 primary and secondary IP interfaces 506 printing the events list 338 prioritization...
Page 914 324 recurring severity 322 redirection web cache 872 rediscovery 104 refreshing the events list 336 registering 3Com devices for warranty 483, 494 registering as SNMP trap destination 304 re-installation 55 release notes 821 replacement device restoring to 801...
Page 915 792 restoring to a replacement device 801 retry periods and timeouts changing 304 RMON 3Com Switch 4007 424 definition 452 history data for a device 423 history data for a link 425 history group 423 host view dialog box 436...
Page 916 viewing data from the RMON Matrix group 440 viewing host data for a selected device 431 viewing host data for a selected link 433 viewing RMON Matrix data for a selected device 440 viewing RMON matrix data for a selected link 442 what is 404 RMON groups History 404...
Page 917 backup 783 search within the search results 194 search results searching within 194 selecting items map and tree 180 selection editor dialog box 584 serial number 48, 53 server farm 378 server TFTP 664 servers blocking 635, 659 cannot be selected 660 prioritized 635 servers step prioritize network traffic 635...
Page 918 170 summary backup 784 summary report agent update 673 support for RMON 407 supported 3Com devices backup, restore and setup 805 Supported Devices 835, 883, 887, 891 supported devices agent update 676, 841 backup, restore and setup 841 bulk configuration 619...
Page 919 configuration 578 device and port selections 579 text displayed in graphs 314 TFTP server 664 third party devices 142 threshold settings dialog box launching 356 thresholds high and warning thresholds 356 scaling to 290 setting for monitor-based events 356 timeouts repeated 678 toolbar buttons 63...
Page 920 understanding backup files 807 undiscovered subnet 109 undiscovered subnets 170 ungrouped network view 158 unit device tree 234 units device table 668 unknown topology 100 unvalidated links 164 useful information and references backup, restore and setup 805 user accounts configuring 612 username 815, 817 username/password NBX call processor 772...
Page 921 general concepts 500 guidelines for creating and editing 570 inconsistent VLAN configuration on link 535 inconsistent VLAN IDs 535 inconsistent VLAN naming 535 membership inference 509 options dialog box 521 port-based 502 protocol details button 526 protocol-based 507 restrictions on support 513 routing button 527 show VLANs 514 show VLANs toolbar...
Page 922 prioritizing network traffic 631 trace path 191 Working with Events 319 working with events 332 working with the map 151 examples 212 XRN fabric 871 zoom 182 buttons 183 zooming graph 291...
Page 923 You may not transfer or assign the Software and/or this License Agreement to another party without the prior written consent of 3Com. If such consent is given and you transfer or assign the Software and/or this License Agreement, then you must at the same time either transfer any copies of the Software as well as the supporting documentation to the same party or destroy any such materials not transferred.
Page 924 PROVIDED ARE FREE OF ERRORS OR VIRUSES, OR THAT THE SOFTWARE AND DOCUMENTATION ARE SUITABLE FOR YOUR INTENDED USE. IN NO EVENT SHALL 3COM OR ITS SUPPLIERS BE LIABLE TO YOU OR ANY OTHER PARTY FOR ANY INCIDENTAL, SPECIAL OR CONSEQUENTIAL DAMAGES, LOSS OF DATA OR DATA BEING RENDERED...

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