3Com 3C16630A User Manual
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3Com 3C16630A User Manual

Management module/advanced rmon module
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Part No. DUA1663-0BAA03
Revision: 01
Published September 1996
S
S
UPER
M
ANAGEMENT
U
G
SER
M
ANAGEMENT
A
RMON M
DVANCED
II H
TACK
UIDE
M
(3C16630A)
ODULE
ODULE
10
UB
(3C16632)

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  • Page 1 Part No. DUA1663-0BAA03 Revision: 01 Published September 1996 UPER TACK ANAGEMENT UIDE ANAGEMENT ODULE RMON M DVANCED II H (3C16630A) (3C16632) ODULE...
  • Page 2 Santa Clara, California 95052-8145 © 3Com Ireland 1996. All rights reserved. No part of this documentation may be reproduced in any form or by any means or used to make any derivative work (such as translation, transformation, or adaptation) without permission from 3Com Ireland.

  • Page 3: Table Of Contents

    ONTENTS BOUT UIDE A Word about Safety vii About this User Guide vii How to Use This Guide ix Other Useful Publications Special Messages Conventions Terminology xii NTRODUCTION Overview Stacking Units SuperStack II Hub 10 Management Module 1-3 SuperStack II Hub 10 Advanced RMON Module NSTALLATION AND Safety Information Installing the Management or Advanced RMON Module 2-1...
  • Page 4 Connecting Management Equipment to the Serial Port Connecting a VT100 Terminal 2-8 Connecting a VT100 Terminal Emulator 2-8 Connecting a Workstation Running SLIP Managing over the Network 2-9 Quick Start for SNMP Management Users Using Telnet 2-10 Using an SNMP Network Manager 2-11 VT100 M SING THE Introduction 3-1...
  • Page 5 IPX Addresses A-5 IP Addresses A-5 Obtaining a Network Number A-6 ECHNICAL UPPORT On-line Technical Services 3Com Bulletin Board Service B-1 World Wide Web Site ThreeComForum on CompuServe 3ComFacts Automated Fax Service Support from Your Network Supplier B-3 Support from 3Com...
  • Page 6 ROUBLESHOOTING TATISTICS RMON DVANCED What is RMON? E-1 Benefits of RMON E-2 3Com Transcend RMON SmartAgents E-2 The SuperStack II Hub 10 RMON Implementation E-4 The Management Information Base (MIB) E-5 Counters E-7 Counters and RMON Alarms E-7 Using Alarms...

  • Page 7: About This Guide

    BOUT A Word about Safety Please pay careful attention to the Warning and Safety Information panels that appear throughout this guide. These panels give information that will protect YOU and the SuperStack II equipment. Look for the Warning symbol, which always accompanies the appropriate message. WARNING: Installation and Removal of the SuperStack II Hub 10 Management Module or Advanced RMON Module must only be carried out by Qualified Personnel.
  • Page 8 Explain how to manage units using an SNMP Manager such as Transcend WorkGroup Manager for Windows. Provide a detailed description or copy of the MIB (Management Information Base). You can obtain a copy of the MIB from 3Com’s bulletin board services if required. For more information, see Appendix Show you how to use your Telnet host application.

  • Page 9: Remote Management

    Hub 10 Advanced RMON Module use SNMP (Simple Network Management Protocol). This can be accessed by remote network management facilities. 3Com has a range of network management products called Transcend. For details of SuperStack II Hub 10 management using the UNIX- or...
  • Page 10 BOUT UIDE Transcend Workgroup Manager for Windows (Part No. DUA1500-0AAA0X) Transcend Enterprise Manager for Windows (Part No. DUA1501-0AAA0X) If you are using any other remote management software, refer to the accompanying documentation and read the sections that describe how to manage SNMP devices. Telnet If you wish to manage your SuperStack II Hub 10 stack via Telnet you will need to refer to the manual(s) supplied with your Telnet host...

  • Page 11: Special Messages

    Special Messages A special format indicates notes, cautions, and warnings. These messages are defined as follows. Notes call attention to important features or instructions. CAUTION: Cautions contain directions that you must follow to avoid immediate system damage or loss of data. WARNING: Warnings contain directions that you must follow for your personal safety.

  • Page 12: Terminology

    BOUT UIDE Terminology The following terms and abbreviations are used in this guide: Flash EPROM IETF NVRAM PROM RMON SLIP SmartAgent SNMP Telnet TFTP Electrically Erasable Programmable Read-Only Memory Internet Engineering Task Force Internet Protocol Internetwork Packet Exchange protocol Light Emitting Diode LAN Security Architecture Media Access Control Medium Access Unit...

  • Page 13: Introduction

    NTRODUCTION Overview The Management Module and Advanced RMON Module are SNMP-conformant, slide-in modules that can manage an entire stack of units. SmartAgent software in the Modules automatically gather and collate information about the stack. As well as supporting in-band management via a network link, each Module has a serial port which allows out-of-band management.

  • Page 14: Stacking Units

    Using SNMP management, you can access RMON statistics for a stack. Adequate statistics for most situations will be stored by the SuperStack II Hub 10 Management Module (3C16630A). If you want to perform extremely comprehensive RMON analysis on heavily loaded networks, you should consider using the SuperStack II Hub 10 Advanced RMON Module (3C16632).

  • Page 15: Superstack Ii Hub 10 Management Module

    Hub 10 unit fitted with a Module, the Module will manage the stack. The management facilities of the 10BTi unit will be disabled. SuperStack II Hub 10 Management Module The SuperStack II Hub 10 Management Module (3C16630A) can be installed in the following units: 3C16665A...

  • Page 16: Superstack Ii Hub 10 Advanced Rmon Module

    SuperStack II Hub 10 Advanced RMON Module The SuperStack II Hub 10 Advanced RMON Module (3C16632) can be installed wherever its companion module (3C16630A) may be used, including the earlier LinkBuilder FMS II modules. See the list above. The module supports comprehensive, highly accurate, advanced RMON statistics for heavily loaded networks.

  • Page 17: Installation And Setup For Management

    NSTALLATION AND Safety Information WARNING: Please read the following safety information before installing the Management Module or Advanced RMON Module. Installation and removal of either Module should be carried out by qualified personnel only. Read and follow the Safety Information for the installation and removal of the SuperStack II unit.

  • Page 18: Unpacking

    2: I HAPTER NSTALLATION AND Module” on page 1-15 lists the units into which you can install the module. To complete the installation, you will need a small cross-bladed screwdriver. The installation comprises the following steps: Unpack the Hub 10 Module from the carton. Disconnect all the units in the stack from the mains power supply.

  • Page 19: Removing The Blanking Plate From The Hub 10 Unit

    Removing the Blanking Plate from the Hub 10 Unit 1 Remove the Management Module blanking plate from the rear panel of the unit by unscrewing the three retaining screws (see Figure 2-1). Keep two of the screws for use with the Module. Do not remove any of the screws around the connector ports.
  • Page 20 2: I HAPTER NSTALLATION AND Figure 2-2 Inserting The Hub 10 Module WARNING: During installation, both the insert/remove tab and the lip on the connector must be facing the module’s printed circuit board (see Figure 2-3). This means that the connecting wires will be twisted as shown in that illustration below.

  • Page 21: Removing The Hub 10 Module

    5 Secure the module using the supplied longer screw and washer on the left-hand side of the cover, and the two original retaining screws on the right-hand side of the cover. 6 Return your Hub 10 unit to its usual position. If your Hub 10 unit is part of a stack, reconnect the units using the hub expansion cables, starting with the management unit.

  • Page 22: Power Up Sequence

    2: I HAPTER NSTALLATION AND ETUP FOR ANAGEMENT Power Up Sequence When any unit in the stack is powered up, the Module will reset all the units in the stack. Therefore, to avoid an unnecessary number of resets, power up any other units in the stack before powering up the unit containing the Module.

  • Page 23: Leds And Reset Button

    LEDs and Reset Button Two LEDs indicate the state of the Module: a red/green LED on the front panel of the management unit and an amber LED at the rear of the Module. The Reset button is situated at the rear of the Module. Front Panel MGMT LED The LED marked MGMT on the front panel of the management unit shows the status of the installed Module.

  • Page 24: Connecting Management Equipment To The Serial Port

    2: I HAPTER NSTALLATION AND Connecting Management Equipment to the Serial Port This section describes how to connect and set up equipment to communicate with the Module via the serial port (out-of-band management). By default, the Module will automatically configure its baud rate. You will need to set the character size (8), stop bit (1) and parity (none) settings of the connected equipment to work with the Module.

  • Page 25: Connecting A Workstation Running Slip

    If you are using a PC, you need a null modem cable with an appropriate connector. The Module automatically configures its baud rate to that of the terminal emulator, as described above. You must set the character size (8), stop bit (1) and parity (none) settings of the emulator to work with the Module.

  • Page 26: Quick Start For Snmp Management Users

    2-10 2: I HAPTER NSTALLATION AND Quick Start for SNMP Management Users This section describes briefly how to get started if you wish to use an SNMP manager, once you have installed and powered up the Module. It assumes you are already familiar with SNMP management. Refer to the sections which follow for more details.

  • Page 27: Using The Vt100 Management

    Module, how that information is structured, and how the SNMP network manager can read and update it. The use of 3Com network managers is not described in detail in this manual. For more information, contact your supplier.
  • Page 28 If you wish to set up SNMP traps, in some cases you may have to configure the Module locally. 3Com network managers such as Transcend WorkGroup Manager for Windows can automatically configure the Module to send traps to them.

  • Page 29: Introduction

    Introduction This chapter starts with an overview of the VT100 user interface. It describes the screens and how to navigate between them. A map of all the screens is given, to help you to access any chosen screen. The remainder of this chapter is divided into sections that cover management tasks.

  • Page 30: Screen Components

    3: U HAPTER SING THE 3Com SuperStack II Port Statistics Unit ID: Media Type: Good Frames: Good Octets: Unicast Frames: Multicast Frames: Broadcast Frames: Total Collisions: Runt Frames: AutoPartitions: Bandwidth Used (%): Source Address Changes: Last Source Address: CLEAR COUNTERS...
  • Page 31 Table 3-1 Screen Components Component Type Choice Field Enabled Entry Field [005634] Read-only Address: information Button List Box monitor manager security DUA1663-0BAA03 Description Text enclosed in markers is a list, from which you can select one option only. To cycle through the options, press [Space]. Text enclosed in square brackets on the screen is an Entry Field.

  • Page 32: Special Keystrokes

    3: U HAPTER SING THE Special Keystrokes As well as the keystrokes described above, there are several other keystrokes for controlling the VT100 interface. These keystrokes allow you to move the cursor around the screen, enter information and move from one screen to another. [Tab] [Ctrl]+[B] When you have finished entering or changing data, [Ctrl]+[B] is very...

  • Page 33: Screen Map

    User Interface Screen Map This diagram shows how the menus are related to each other. DUA1663-0BAA03...

  • Page 34: Getting Started

    The main banner screen has a concealed field which can be revealed using an SNMP manager, by entering text in the sysName MIB object. This field is convenient for defining the Module you are accessing. VT100 M ANAGEMENT NTERFACE 3Com SuperStack EEEEE TTTTTTT EEEEE Enter...

  • Page 35: Logon

    You must enter your user name and password to be able to use the management facility. The Logon screen is shown below. User Name: Password: Figure 3-3 Logon Screen DUA1663-0BAA03 3Com SuperStack II Logon Getting Started “Serial Port Setup” Appendix C for further...
  • Page 36 3: U HAPTER SING THE If you are logging on for the first time (after installation or initialization), use one of the default user names and passwords shown in The user name to use depends on which access level you require. Table 3-2 User Names And Passwords User Name monitor...

  • Page 37: Main Menu

    Main Menu The Main Menu screen is illustrated below. 3Com SuperStack II Main Menu Figure 3-4 Main Menu If you are using the management facility for the first time, we suggest that you: Set up logons for any other users and assign each user an appropriate security level.

  • Page 38: Auto Logout

    10 seconds, the timer will expire and the screen will be locked. (Any displayed statistics will continue to be updated, however.) When you next press any key, the display changes to the Auto Logout screen. This screen is shown below. 3Com User Name: Password: Auto...
  • Page 39 SLIP allows you to use out-of-band Telnet or SNMP management, either locally or remotely via a modem. SLIP will operate with a SLIP address of 192.168.101.1. DUA1663-0BAA03 3Com SuperStack II Setup MAC Address: 08004E098765 SLIP Address:...
  • Page 40 3-12 3: U HAPTER SING THE If you enter a SLIP address, it should show a different network from the stack that you are managing. Check with your network administrator if you are unsure. If you change this field, reset the Module to effect the change.

  • Page 41: Trap Setup

    Node (Read-only) This field shows the node address of the repeater stack, which is learned automatically. Status (Choice Field) Enabled / Disabled This field shows whether the data link protocol is enabled. Choose Disabled if you wish to prevent access for any reason, such as security considerations.
  • Page 42 3-14 3: U HAPTER SING THE 3Com SuperStack II Trap Setup IP or IPX Address: [123.123.40.130 [123.123.40.130 [aabbccdd:112233445566] [123.123.36.44 [aabbccdd:112233445566] [aabbccdd:112233445566] [0.0.0.0 [0.0.0.0 Figure 3-7 Trap Setup Screen IP or IPX Address (Text Field) Enter the IP or IPX address of the remote network management station to which SNMP traps should be sent.

  • Page 43: Serial Port Setup

    Serial Port Setup You can access the Serial Port Setup screen by actuating the SERIAL PORT button on the Setup screen. 3Com SuperStack II Serial Port Connection Type: DCD Control: DSR Control: Flow Control: Figure 3-8 Serial Port Setup Screen If you alter the serial port parameters and select OK, you will terminate any existing session using the serial port.
  • Page 44 3-16 3: U VT100 M HAPTER SING THE ANAGEMENT NTERFACE DSR Control (Choice Field) Enabled / Disabled If DSR Control is enabled, the management port will be logged out if DSR is deasserted. Check in the manual for your modem if you are not sure of the correct setting.

  • Page 45: User Access Level

    User Access Level The User Access Level screen provides a menu to access four further screens. 3Com SuperStack II User Access Levels Menu Figure 3-9 User Access Level Menu Local Security This screen allows you to enable or disable access to the management facility, for each combination of access method (serial port, Telnet or SNMP) and access level.

  • Page 46: Local Security

    Local Security You can access the Local Security screen by actuating the LOCAL SECURITY button on the User Access Level screen. This option is available only for users with security access level. 3Com SuperStack II Local Security Monitor Serial Port Enabled...
  • Page 47 User Access Level 3-19 Specialist - In this implementation, Specialist has the same rights as Manager. Security - This level of security allows a user access to all the management operations. This level of security should be assigned only to the system administrator or somebody with the system administrator's responsibilities.

  • Page 48: Create User

    Use this screen to add new users. There can be up to 10 users, including the three default users. Up to three users can concurrently access the management facility using Telnet. There is no limit to the number of SNMP remote management sessions. 3Com User Name: Password: Access Level:...

  • Page 49: Delete Users

    You access the Delete Users screen by actuating the DELETE USERS button on the Security screen. This option is available only for users with security access level. 3Com SuperStack II Delete Users Figure 3-12 Delete Users Screen Select the users to delete from the List Box using the spacebar, then move the cursor to the DELETE USERS button and press [Return].

  • Page 50: Repeater Management

    No user can directly change another user's password or community string. If you are a system administrator and wish to change another user's password, you will need to login as the other user. 3Com SuperStack II Edit User User Name: Old Password:...
  • Page 51 Repeater Management 3-23 eight units linked together by hub expansion cables to form a single, logical repeater. Unit - If you manage at Unit level, you are managing or viewing a single unit in the stack. This can be a Hub 10, FMS, FMS II, 10BT or 10BTi unit.
  • Page 52 3: U HAPTER SING THE Figure 3-14 Using The Repeater Management Screen The example screen below shows the screen with port level management selected. 3Com SuperStack II Repeater Management Management Level: Unit ID: Port ID: STATISTICS Figure 3-15 Repeater Management Screen...
  • Page 53 Management Level (Choice Field) Repeater / Unit / Port Toggle to the level you wish to manage. Unit ID (Text Field) Enter the identifying number of the unit you wish to manage. The Unit ID is a digit, and is displayed by the Unit LED on the front of each unit.

  • Page 54: Repeater Statistics

    3-26 3: U HAPTER SING THE Table 3-3 Port Numbering (Continued) Unit Product 3C16671A Hub 10 24 port RJ45 3C16672A Hub 10 24 port telco STATISTICS (Button) Move the cursor to this button and press [Return] to move to the Statistics screen for the management level you have chosen.

  • Page 55: Repeater Setup

    3Com SuperStack II Repeater Statistics Good Frames: Good Octets: Unicast Frames: Multicast Frames: Broadcast Frames: Transmit Collisions: Runt Frames: AutoPartitions: Bandwidth Used (%): CLEAR COUNTERS Figure 3-16 Repeater Statistics Screen The screen is updated every 3 seconds. If the top limit of a counter (4294967295) is reached, the counter will roll-over (reset to zero automatically).

  • Page 56: Repeater Resilience

    3-28 3: U HAPTER SING THE 3Com SuperStack II Repeater Setup Units Available: Unit Capacity: Total Ports Partitioned: Repeater Health: Figure 3-17 Repeater Setup Screen Units Available (Read-only) This field shows how many units are currently installed in the repeater stack.
  • Page 57 Repeater Management 3-29 Resilient Links are only available on twisted pair and fiber optic media, because the link test pulse or the idle signal is used to decide whether the link is broken and the standby link should be activated. There is no such link signal over coaxial media.
  • Page 58 See WARNING: Security may be set up at the same time as Resilience, but only using a network manager. 3Com SuperStack II Repeater Resilience ---MAIN--- Unit Port Figure 3-18 Repeater Resilience Screen All the fields are read-only.

  • Page 59: Unit Statistics

    STANDBY Port This field shows the identifier of the standby port. Pair State This field shows the state of the resilient link pair. Possible values are: Active - The link pair is enabled, and either the main port or the standby port is capable of carrying traffic.
  • Page 60 3-32 3: U HAPTER SING THE 3Com SuperStack II Unit Statistics Unit ID: Unit Type: Good Frames: Good Octets: Unicast Frames: Multicast Frames: Broadcast Frames: Total Collisions: Runt Frames: AutoPartitions: Bandwidth Used (%): Figure 3-19 Unit Statistics Screen The screen is updated every 3 seconds. If the top limit of a counter (4294967295) is reached, the counter will roll-over (reset to zero automatically).

  • Page 61: Unit Setup

    You access the Unit Setup screen from the Repeater Management screen, by selecting management level Unit then actuating the SETUP button. The Unit Setup screen is illustrated below. 3Com SuperStack II Unit Setup Unit ID: Unit Type: Unit Hardware Revision:...
  • Page 62 3-34 3: U HAPTER SING THE Unit Boot State This field indicates in what state the unit will boot up. Only Hub 10 and FMS II units have a Disable on Boot switch. The boot state is determined by the setting of the Disable on Boot switch, which is located behind the blanking plate or rear cover of the unit (see Figure 2-1...

  • Page 63: Port Statistics

    Port Statistics You access the Port Statistics screen from the Repeater Management screen, by selecting management level Port then actuating the STATISTICS button. The Port Statistics screen is illustrated below. 3Com SuperStack II Port Statistics Unit ID: Media Type: Good Frames:...

  • Page 64: Port Setup

    You access the Port Setup screen from the Repeater Management screen, by selecting management level Port then actuating the SETUP button. The Port Setup screen allows you to configure a selected port. The screen is illustrated below. 3Com SuperStack II Port Setup Unit ID: Port ID: Media Type:...
  • Page 65 The screen shows the following fields: Unit ID (Read-only) This field shows the unit to which the port belongs. Port ID (Read-only) This field shows the identifier of the port you selected to set up. Media Type (Read-only) This field indicates the media type of the port.
  • Page 66 The learnt address will receive traffic addressed to it, together with multicast and broadcast frames. Other traffic will be scrambled. If you use a 3Com Transcend management application, you have greater control over security, including support for multiple address per port.

  • Page 67: Port Resilience

    You can enable or disable the generation of link pulse signals for an individual port. In an 802.3 10BASE-T compliant network, leave this option at the default setting. If you are using non-compliant transceivers that do not use the link pulse signal, you will need to disable link pulse to enable the network to function correctly.
  • Page 68 3-40 3: U HAPTER SING THE The Port Resilience screen allows you to create and delete a resilient link pair (main link and standby link), and to change the configuration of an existing resilient link pair. There are three steps to setting up a resilient pair. 1 Disconnect the unit which is to provide the standby ports from the network.
  • Page 69 3Com SuperStack II Port Resilience Main Unit ID: Main Port ID: Media Type: Link State: Standby Unit ID: Standby Port ID: Media Type: Link State: Pair State : Operational Active Port : Pair Enable : Figure 3-23 Port Resilience Screen...
  • Page 70 3-42 3: U VT100 M HAPTER SING THE ANAGEMENT NTERFACE The number of resilient links per stack must not exceed 16. Resilience works by monitoring the fiber receive idle signal or the 10BASE-T link Test Pulse, to determine whether or not the main link is operational.
  • Page 71 Media Type (Read-only) This field shows the media type for the standby port. Refer to types. Link State (Read-only) This field shows the connection state of the standby port. Refer to Pair State (Read only) This field shows the state of the currently active selected resilient pair, if any.

  • Page 72: Remote Poll

    To display the screen, actuate the REMOTE POLL button on the Main Menu screen (only available to users with manager access level or higher.) 3Com SuperStack II Remote Poll Target Address : Round Trip Time : This operation will poll the target device.

  • Page 73: Status

    This facility is only available through SNMP management. Status The Status screen provides read-only information about the Module. To display the screen, select the STATUS button on the Main Menu screen. 3Com SuperStack II Status System Up Time (seconds): Number of Resets: Last Reset Type:...
  • Page 74 3-46 3: U VT100 M HAPTER SING THE ANAGEMENT NTERFACE be useful to your technical support representative in the event of problems. Last Reset Type This field indicates the cause of the last reset. This information may be useful to your technical support representative in the event of problems.

  • Page 75: Fault Log

    Fault Number The hexadecimal number in this field provides an indication of the type of fault. It is for 3Com internal use only. Record any information on this screen and contact your Technical Support service for advice.

  • Page 76: Reset

    Module. None of the setup information will be lost. CAUTION: Performing a reset may cause some of the data being transmitted onto the network to be lost. Select the OK button to perform the reset. VT100 M ANAGEMENT 3Com SuperStack II Reset CANCEL NTERFACE DUA1663-0BAA03...

  • Page 77: Initialization

    The configuration of the stack no longer suits your network. Other troubleshooting efforts have failed. To display the Initialization screen, actuate the INITIALIZE button on the Main Menu screen. 3Com SuperStack II Initialization This operation will change the device back to the factory defaults. Figure 3-28 Initialization Screen Select OK to perform the initialization.

  • Page 78: Software Upgrade

    HAPTER SING THE Software Upgrade This option is only available to users with security access level. When 3Com issues a new version of the Module SmartAgent software, you can obtain the software image from 3Com bulletin board services (see Appendix You use the Software Upgrade screen to download software images.
  • Page 79 Software Upgrade 3-51 wrong image. You must place the image file where it is accessible to the TFTP load request. Check with your system administrator if you are unsure where to place the image file. You may wish to download the file from another directory. If so, you must give the full path to the file and the filename, using a maximum of 30 characters.
  • Page 80 3-52 3: U VT100 M HAPTER SING THE ANAGEMENT NTERFACE DUA1663-0BAA03...

  • Page 81: Pin Uts And Protocols

    FCC Part 15 Class A IEC 801 (parts 2-5) EN55022 Class B EN50082-1 Environmental IEC 68 to 3Com Schedule. Operational 0 °C to 50 °C. BABT Approval For UK Users only. The SuperStack II Hub 10 units, fitted with a Management Module or...

  • Page 82: Electrical

    A: T PPENDIX ECHNICAL Electrical These figures apply to the device listed when fitted with a SuperStack II Hub 10 Management Module or SuperStack II Hub 10 Advanced RMON Module. Power Consumption 3C16665A 3C16670A 3C16671A 3C16672A Power Dissipation 3C16665A 3C16670A 3C16671A 3C16672A Processor and Memory...

  • Page 83: Cable Pin-Outs

    Cable Pin-Outs This section shows the pin-outs for the Management Terminal cable used to connect a terminal, PC or modem to the serial port (RS-232C management port). Null Modem Cable RS-232C 25 pin to RS-232C 25 pin. RS232C Serial Port 25 pin male Screen Ground...
  • Page 84 A: T PPENDIX ECHNICAL PC-AT Serial Cable 9 pin to RS-232C 25 pin. RS232C Serial Port 25 pin male Ground Modem Cable RS-232C 25 pin to RS-232C 25 pin. RS232C Serial Port 25 pin male Screen Ground NFORMATION ABLE Ground Screen Ground UTS AND...

  • Page 85: Protocol Addresses

    Protocol Addresses IPX Addresses If you are using the IPX protocol, the Module will be allocated an IPX address automatically by the local IPX router or NetWare File Server. This happens approximately 60 seconds after the unit is powered up for the first time.

  • Page 86: Obtaining A Network Number

    A: T PPENDIX ECHNICAL those you have been allocated by Network Information Center (NIC). If you do not do this, your outside communications will not operate. A subnet mask is a filtering system for IP and SLIP addresses. If you are unsure about what mask to use, we suggest you use a general mask, 255.255.255.0, to tie in with the advice above.
  • Page 87 Telephone Fax: e-mail: Asia Pacific Network Information Centre (APNIC-DOM) Attention: Admin. Contact: Telephone: e-mail: Technical Contact: Telephone: Fax: e-mail: DUA1663-0BAA03 Protocol Addresses +31 20 592 5065 +31 20 592 5090 ncc@ripe.net Asia Pacific Network Information Centre (APNIC-DOM) c/o Computer Centre, University of Tokyo 2-11-16 Yayoi Bunkyo-ku, Tokyo 113 Japan...
  • Page 88 A: T PPENDIX ECHNICAL NFORMATION ABLE UTS AND ROTOCOLS DUA1663-0BAA03...

  • Page 89: Support

    3Com provides easy access to technical support information through a variety of services. This appendix describes these services. On-line Technical Services 3Com offers worldwide product support seven days a week, 24 hours a day, through the following on-line systems: 3Com Bulletin Board Service (3ComBBS)

  • Page 90: Access By Isdn

    ThreeComForum on CompuServe ThreeComForum is a CompuServe-based service containing patches, software, drivers, and technical articles about all 3Com products, as well as an interactive forum for technical questions. To use ThreeComForum, you need a CompuServe account. To use ThreeComForum: 1 Log on to CompuServe.

  • Page 91: 3Comfacts Automated Fax Service

    3ComFacts Automated Fax Service 3Com Corporation’s interactive fax service, 3ComFacts, provides data sheets, technical articles, diagrams, and troubleshooting instructions on 3Com products 24 hours a day, seven days a week. Call 3ComFacts using your touch-tone telephone. International access numbers are:...

  • Page 92: Support From 3Com

    If you are unable to receive support from your network supplier, technical support contracts are available from 3Com. In the U.S. and Canada, call (800) 876-3266 for customer service. If you are outside the U.S. and Canada, contact your local 3Com sales office to find your authorized service provider: Country...

  • Page 93: Returning Products For Repair

    Returning Products for Repair A product sent directly to 3Com for repair must first be assigned a Return Materials Authorization (RMA) number. A product sent to 3Com without an RMA number will be returned to the sender unopened, at the sender’s expense.
  • Page 94 B: T PPENDIX ECHNICAL UPPORT DUA1663-0BAA03...

  • Page 95: Troubleshooting

    ROUBLESHOOTING In the main chapters, we have indicated where problems can occur when using the management facility. This appendix collects together this troubleshooting information. It will help you to determine the cause of a problem, should one arise, and to correct the problem. It lists symptoms that may appear, and suggests what actions to take to track down and resolve the problem.
  • Page 96 C: T PPENDIX ROUBLESHOOTING If you still cannot resolve the problem, the Module itself may be faulty. Contact your supplier. Screens are incorrectly displayed. Check that your terminal or terminal emulator is correctly configured to operate as a VT100 terminal. Check the settings on your terminal or emulator.
  • Page 97 Try accessing the device through a different port. If you can now access the device, a problem with the original port is indicated. Re-examine the connections and cabling. Possibly there is a network problem preventing you accessing the device over the network. Try accessing the device through the serial port.
  • Page 98 C: T PPENDIX ROUBLESHOOTING DUA1663-0BAA03...
  • Page 99 TATISTICS This appendix lists the terms that are used in the Repeater Statistics, Unit Statistics and Port Statistics screens. There are suggestions for courses of action to take, if required. In general, if repeater statistics indicate a problem, try to isolate the source of the problem by examining unit and then port statistics.
  • Page 100 D: S PPENDIX TATISTICS value seen for unicast frames. A high level of broadcast frames can adversely affect network performance. Data Rate Mismatches The number of frames received by the repeater, unit or port whose timing was outside the permitted frequency range.
  • Page 101 Multicast Frames This is the total number of multicast frames seen at the repeater, hub or port. A multicast frame is one that is addressed to a group of MAC addresses (that is, several devices) on the network. The total number of multicast frames will normally be a small percentage of the value seen for unicast frames.
  • Page 102 D: S PPENDIX TATISTICS detected at the stack. Collisions are a normal part of 802.3 operation, and are not errors. Transmit collisions form part of the Total Collisions figure. Unicast Frames This is the total number of frames addressed to a single MAC address (that is, a single device) seen at the repeater, unit or port.

  • Page 103: Advanced Management

    RMON DVANCED What is RMON? Transcend SmartAgent RMON provides a mechanism for remote monitoring and analysis of a Local Area Network. RMON is the common abbreviation for the Remote Monitoring MIB as defined by the IETF in documents RFC 1271 and RFC 1757. A typical RMON system consists of two components: The Probe - Connects to a LAN segment, examines all the LAN traffic on that segment and keeps a summary of statistics (including...

  • Page 104: Benefits Of Rmon

    RMON probes have traditionally been expensive. Therefore, 3Com’s approach has been to build an inexpensive RMON probe into the Transcend SmartAgent in each hub device. This allows RMON to be widely deployed around the network without costing more than traditional network management.
  • Page 105 (switch off and then back on) or switch to a backup link. The RMON capabilities of 3Com hubs can only be accessed through SNMP applications, not through the serial interface or Telnet. For more...

  • Page 106: The Superstack Ii Hub 10 Rmon Implementation

    E: RMON PPENDIX The SuperStack II Hub 10 RMON Implementation The following table summarizes the support in this product for the nine standard groups of RMON. The table also specifies the configuration of the various groups after system initialization. Table E-1 RMON Group Configurations Group Initial Configuration Ethernet...

  • Page 107: The Management Information Base (Mib

    monitor all statistics, learn all the hosts, create a who-talks-to-whom matrix. Because the SuperStack II Hub 10 stack supports only one Ethernet segment, there is one interface that can gather RMON information. For those resources created by the RMON agent itself during startup, the owner string will be set to ’monitor’.
  • Page 108 If you would like to have a copy of the MIB, contact 3Com using one of the means listed in Appendix B.

  • Page 109: Counters

    Counters Counters are the MIB objects which hold and update the number of occurrences of a particular event through a port, module, repeater or on the network. The management facility reads the counters it needs for the output, processes the information and displays the result. The counter may be associated with a port, or a module, or a repeater, or even a chassis.
  • Page 110 E: RMON PPENDIX DVANCED ANAGEMENT The diagram below shows the variation of a typical counter with time. Figure E-1 Counter Values During Autosetting Of Thresholds Alarm thresholds may be autocalibrated or set manually. Autocalibration is a means of calculating alarm thresholds specific to the activity of the counter being monitored.

  • Page 111: Counters And Rmon Alarms E

    Figure E-2 Counter Values After Setting Thresholds Alarms can be set up with two actions; one is associated with the high threshold and the other with the low threshold. Whether an action is taken depends on the circumstances surrounding each crossing of a threshold.
  • Page 112 E-10 E: RMON PPENDIX Table E-2 Alarm Actions Action No action. Notify only. Notify and blip port. Notify and disable port. Notify and enable port. Blip port. Disable port. Enable port. Notify and switch resilient port. Notify and blip module. Notify and disable module.

  • Page 113: Using Alarms

    Using Alarms How to set up alarms is described in the manuals of your management application. The alarm carries the ability to define actions to be taken when the alarm value rises above the high threshold, and/or falls below the low threshold.

  • Page 114: Audit Log

    E-12 E: RMON PPENDIX DVANCED ANAGEMENT Broadcast Storms are capable of using most of the available bandwidth of your network. If you set up an alarm on the Broadcast Frames Received counter of a port, with the ‘Notify and Blip’ action (see Table on page E-10), on the high threshold.

  • Page 115: Ndex Of Management Ctions And Data

    NDEX OF CTIONS AND This index consists of an alphabetical listing of field names taken from the VT100 screens. It relates the field names to the page in the user guide where you can find a description of the use of the field and the title of the screen containing it.
  • Page 116 F: I PPENDIX NDEX OF Parameter Alignment Errors Alignment Errors Alignment Errors APPLY Area (of fault) Autoconfig(uration) Autopartitions Autopartitions Autopartitions Bandwidth Used Bandwidth Used Bandwidth Used Boot Software Version Broadcast Frames Broadcast Frames Broadcast Frames Char Size CLEAR COUNTERS CLEAR COUNTERS CLEAR COUNTERS Community String Community String...
  • Page 117 Parameter Default Router DELETE DELETE USERS DELETE USERS Device IP Address Device SubNet Mask DRS Control EDIT USER Errors/10000 Packets Errors/10000 Packets Errors/10000 Packets FAULT LOG Fault Number FCS Errors FCS Errors FCS Errors Filename Flow Control Good Frames Good Frames Good Frames Good Octets Good Octets...
  • Page 118 F: I PPENDIX NDEX OF Parameter Late Events Late Events Link Pulse Link State Link State LOCAL SECURITY LOGOFF Lost Links MAIN MENU MAC Address (internal port) Main Port Main Port ID Main Unit Main Unit ID Management Level Media Type Media Type Media Type Multicast Frames...
  • Page 119 Parameter Password POLL Port ID Port ID Port ID Port State Power Supply Status REMOTE POLL Remote Telnet (Security) Repeater Health REPEATER MANAGEMENT RESET Reset Count RESILIENCE Round Trip Time Runt Frames Runt Frames Runt Frames SECURITY Security SELF TEST Serial Port (Security) SERIAL PORT Server IP Address...
  • Page 120 F: I PPENDIX NDEX OF Parameter SLIP SubNet Mask Source Address Changes Speed (serial line) Standby Links Available Standby Port Standby Port ID Standby Unit Standby Unit ID STATISTICS STATUS Status Stop Bit SOFTWARE UPGRADE System Up Time Target Address Throttle Time (since reset) Too Long Frames...
  • Page 121 Parameter Unicast Frames Unit Boot State Unit Capacity Unit Hardware Revision Unit ID Unit ID Unit ID Unit ID Unit ID Unit Port Capacity Units Available Unit Type Unit Type Upgradeable Software Version User List User Name User Name User Name User Name Very Long Events Very Long Events...
  • Page 122 F: I PPENDIX NDEX OF ANAGEMENT CTIONS AND DUA1663-0BAA03...

  • Page 123: Audit Log E-

    NDEX Numerics 3Com Bulletin Board Service (3ComBBS) B-1 3Com sales offices B-4 3ComFacts B-3 access levels 3-20 manager 3-18 monitor 3-18 secure monitor 3-18 security 3-19 specialist 3-19 access method 3-18 active port 3-31 active power supply 3-34 alarm action E-10...
  • Page 124 DSR control 3-16 edit user screen 3-21 EMC standards A-1 entry fields 3-3 environmental standards A-1 errors/10000 packets D-2 fault log screen 3-47 fault number 3-47 fax service. See 3ComFacts FCS errors D-2 flow control 3-16 Hub 10 management module blanking plate 2-2 connecting to unit 2-3 contents of package 2-2...
  • Page 125 management module accessing facility 1-1 hardware version 3-46 LEDs 2-7 powering up 2-6 reset button 2-7 upgrading software 3-50 map of screens 3-5 media type 3-35, 3-37, 3-42, 3-43 MGMT LED 2-7 modem cable pin-outs A-4 multicast frames D-3 NetWare file server A-5 network manager community string 3-14 managing stack using 2-11...
  • Page 126 fault log 3-47 initialization 3-48 local security 3-18 logon 3-7 main banner 3-6 main menu 3-9 port resilience 3-39 port setup 3-36 port statistics 3-35 remote poll 3-44 repeater management 3-23 repeater resilience 3-28 repeater setup 3-27 repeater statistics 3-26 reset 3-47 security 3-17 serial port setup 3-15...
  • Page 127 unauthorized device action 3-38 unicast frames D-4 unit hardware revision 3-33 unit ID 3-25, 3-32, 3-33, 3-35, 3-37 unit port capacity 3-33 unit port state 3-34 unit setup screen 3-33 unit statistics screen 3-31 unit type 3-32, 3-33 units available 3-27 upgradeable software version 3-46 user access level screen 3-17 user interface, overview of 3-1...

  • Page 129: Electro - Magnetic Compatability Statement

    LECTRO OMPATABILITY FCC Statement This equipment has been tested and found to comply with the limits for a class A digital device, pursuant to part 15 of FCC Rules. These limits are designed to provide reasonable protection against interference when the equipment is operated in a commercial environment.
  • Page 130 LECTRO MAGNETIC OMPATABILITY TATEMENT DUA1663-0BAA03alpha...

  • Page 131: Limited Warranty

    IMITED HARDWARE: 3Com warrants its hardware products to be free from defects in workmanship and materials, under normal use and service, for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller: Internetworking products...
  • Page 132 ANY KIND, OR FOR LOSS OF REVENUE, LOSS OF BUSINESS, OR OTHER FINANCIAL LOSS ARISING OUT OF OR IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, USE, PERFORMANCE, FAILURE, OR INTERRUPTION OF ITS PRODUCTS, EVEN IF 3COM OR ITS AUTHORIZED RESELLER HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

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