Page 1 8271 Nways Ethernet LAN Switch Models F12 and F24 User’s Guide...
Page 2 Trademarks, and Warranties”. First Edition (July, 1998) This edition applies to the IBM 8271 Nways Ethernet LAN Switch Model F12 and F24 with agent software version 1.0. Order publications through your IBM representative or the IBM branch office serving your locality.
Page 3: Table Of Contents
ONTENTS AFETY NOTICES Safety Notices World Trade Safety Information BOUT UIDE Finding Specific Information in This Guide Conventions Related Documentation ETTING TARTED WITH THE WITCH NTRODUCING THE WITCH About the Switch Summary of Hardware Features Summary of Software Features Switch — Front View Detail 10BASE-T/ 100BASE-TX Ports LEDs...
Page 4 Security Resilient Links Spanning Tree Protocol Management Default Settings for the Switch 1-10 Network Configuration Examples 1-11 Configuration Rules for Fast Ethernet 1-14 Configuration Rules with Full Duplex 1-15 NSTALLING THE WITCH Installing the Switch Following Safety Information Choosing a Suitable Site Rack-mounting Wall-mounting Placing Units On Top of Each Other...
Page 5 Setting Up SNMP Management Managing the Stack Over the Network IP Addresses Subnets and Using a Subnet Mask Logging in as a Default User II M ANAGING THE WITCH ORKING ITH THE NTERFACE Accessing the Web Interface Exiting the Web Interface About The Getting Started Pages About the Main Web Interface The External Link Icons...
Page 6 Viewing Statistics for the Current Switch 4-36 Displaying Unit Statistics 4-36 Displaying Port Statistics 4-37 ORKING ITH THE OMMAND NTERFACE Accessing the Interface Exiting the Interface How Many Users Can Access the Interface? About the Interface Menus Entering Commands Displaying Menus Obtaining Help A Quick Guide to the Commands Viewing and Changing Information About Ports in the Stack...
Page 7 How STP Works STP Initialization STP Stabilization STP Reconfiguration An Example STP Configurations Enabling STP on a Stack RMON What is RMON? The RMON Groups Benefits of RMON RMON and the Stack RMON Features of the Stack About Alarm Actions About Default Alarm Settings About the Audit Log IV P...
Page 8 Using the Upgrade Utility OUTS Null Modem Cable PC-AT Serial Cable Modem Cable RJ45 Pin Assignments WITCH ECHNICAL PECIFICATIONS ECHNICAL UPPORT AND ERVICE Electronic Support Voice Support OTICES RADEMARKS ARRANTIES Trademarks Statement of Limited Warranty Production Status The IBM Warranty for Machines...
Page 9 Warranty Service Extent of Warranty Limitation of Liability Electronic Emission Notices for Shielded Twisted Pair (STP) Cable Federal Communications Commission (FCC) Statement Canadian Department of Communications (DOC) Compliance Statement Avis de conformite aux normes du ministere des Communications du Canada European Community (CE) Mark of Conformity Statement for Shielded Cable CISPR22 Compliance Statement for Shielded Cable...
Page 10 viii...
Page 11: Safety Notices
Some countries require the safety information contained in publications Information to be presented in their national languages. Before using an English-language publication to set up, install, or operate this IBM product, you first should become familiar with the related safety information.
Page 12 Vorsicht: Bevor mit der Installation des Produktes begonnen wird, die Sicherheitshinweise in Achtung: Sicherheitsinformationen – Bitte zuerst lesen, IBM Form SD21-0030. Diese Veröffentlichung beschreibt die Sicherheitsvorkehrungen für das Verkabeln und Anschließen elktrischer Geräte.
Page 13 Safety Notices SD21-0030. Este documento describe los procedimientos de seguridad para cablear y enchufar equipos eléctricos. Perigo: Antes de começar a instalar este produto, leia as informações de segurança contidas em Cuidado: Informações Sobre Segurança – Leia Isto Primeiro, SD21-0030. Esse folheto descreve procedimentos de segurança para a instalação de cabos e conexões em equipamentos elétricos.
Page 14 AFETY NOTICES...
Page 15 Safety Notices...
Page 16 AFETY NOTICES...
Page 17: About This Guide
UIDE This guide provides all the information you need to install and manage the IBM 8271 Nways Ethernet Switch Models F12 and F24. This guide is intended for use by network administrators who are responsible for installing and setting up network equipment. It assumes a basic working knowledge of LANs (Local Area Networks).
Page 18: Conventions
BOUT UIDE If you are looking for... Turn to... Procedures for accessing the command line interface, information Chapter 5 on navigating the menu structure, or a full description of how to configure the Switch using the command line interface A description of the Spanning Tree Protocol Chapter 6 A description of RMON in the Switch Chapter 7...
Page 19: Related Documentation
Bold text denotes key features. Related The Switch document set includes: Documentation IBM 8271 Nways Ethernet Switch Models F12 and F24 Quick Reference Guide, Part Number 02L0890 IBM 8271 Nways Ethernet Switch Models F12 and F24 Quick Installation Guide, Part Number 02L0889...
Page 20 BOUT UIDE...
Page 21: Tarted With The
ETTING TARTED WITH THE WITCH Chapter 1 Introducing the Switch Chapter 2 Installing the Switch Chapter 3 Setting Up for Management...
Page 23: Introducing The Switch
NTRODUCING THE WITCH This chapter contains introductory information about the IBM 8271 Nways Ethernet LAN Switch Model F12 and F24 and how it can be used in your network. It covers the following topics: About the Switch Switch — Front View Detail Switch —...
Page 24: About The Switch
1: I HAPTER NTRODUCING THE WITCH About the Switch The 8271 Models F12 and F24 aggregate your existing 10 Mbps devices, connects high-performance workgroups with a 100 Mbps backbone or server connection, and connects power users to dedicated 100 Mbps ports — all in one switch. Summary of The Switch has the following hardware features: Hardware Features...
Page 25 About the Switch A choice of management methods: Web-based management Command line interface management SNMP management...
Page 26: Switch - Front View Detail
1: I HAPTER NTRODUCING THE WITCH Switch — Front View Detail Switch — front view Figure 1-1 10BASE-T/ The Switch has 12 or 24 auto-negotiating 10BASE-T/100BASE-TX ports 100BASE-TX Ports configured as MDIX (cross-over). These ports can be set to 10BASE-T half duplex, 10BASE-T full duplex, 100BASE-TX half duplex, 100BASE-TX full duplex, or they can automatically detect the speed and Duplex Mode of a link and provide the appropriate connection.
Page 27 Switch — Front View Detail LED behavior Table 1-1 Color Indicates Port Status LEDs Packet Yellow Packets are being transmitted/received on the port. No packets are being transmitted/received on the port. Status Green A link is present, and the port is enabled. Green flashing A link is present, but the port is disabled.
Page 28: Switch - Rear View Detail
1: I HAPTER NTRODUCING THE WITCH Switch — Rear View Detail Figure 1-2 Switch — rear view Unit Information This label displays the unique MAC address and serial number of the Label Switch. You may need this information for fault reporting purposes. Power Socket The Switch automatically adjusts its power setting to any supply voltage in the range 90–240V A.C.
Page 29: Matrix Port
Switch Software Features Explained When an Expansion Module is not installed, ensure the blanking plate is secured in place. Matrix Port The matrix port allows you to: Stack the Switch with another Model F12/F24 or Model E12/E24 unit using a single Matrix Cable Stack the Switch with up to three other Model F12/F24 or Model E12/E24 units, if one of the units has a Matrix Module installed Switch Software...
Page 30: Security
1: I HAPTER NTRODUCING THE WITCH In the Model F12 and F24, Flow Control is implemented in two ways: IEEE 802.3x standard for ports operating in full duplex. Intelligent Flow Management (IFM), a method of flow control for ports operating in half duplex. IFM should only be enabled if the port is connected to another switch, or an endstation.
Page 31: Spanning Tree Protocol
Switch Software Features Explained Spanning Tree The stack supports the Spanning Tree Protocol (STP) which is a bridge-based system for providing fault tolerance on networks. STP Protocol allows you to implement parallel paths for network traffic, and ensure that: Redundant paths are disabled when the main paths are operational. Redundant paths are enabled if the main traffic paths fail.
Page 32: Default Settings For The Switch
1-10 1: I HAPTER NTRODUCING THE WITCH For information about management of the stack, see “Setting Up for Management” on page 3-1. Default Settings for Table 1-2 shows the default settings of the Switch. If you initialize the the Switch Switch, it is returned to these defaults.
Page 33: Network Configuration Examples
Network Configuration Examples 1-11 Network The following illustrations show some examples of how the Switch can Configuration be used in your network. Examples The Model F24 as a Segmentation Switch The example in Figure 1-3 shows how the Switch can segment a network of shared 10 Mbps and 100 Mbps connections.
Page 34 1-12 1: I HAPTER NTRODUCING THE WITCH The Model F24 as a Collapsed Backbone Switch The example in Figure 1-4 shows how the Switch can act as a backbone for both shared and switched network segments. Figure 1-4 Using the Switch as a collapsed backbone...
Page 35 Network Configuration Examples 1-13 The Model F24 as a Desktop Switch The example in Figure 1-5 shows how the Switch can be used for a group of heavy-traffic users that require dedicated 10 Mbps or 100 Mbps connections to the desktop. The Model F24 has a Gigabit Ethernet Expansion Module that allows it to provide a Gigabit link to a Gigabit Ethernet Switch in the basement.
Page 36: Configuration Rules For Fast Ethernet
1-14 1: I HAPTER NTRODUCING THE WITCH Configuration Rules The topology rules for 100 Mbps Fast Ethernet are slightly different to for Fast Ethernet those for 10 Mbps Ethernet. Figure 1-6 illustrates the key topology rules and provides examples of how they allow for large-scale Fast Ethernet networks.
Page 37: Configuration Rules With Full Duplex
Configuration Rules with Full Duplex 1-15 The key topology rules are: Maximum UTP cable length is 100m (328ft) over category 5 cable. A 412m (1352ft) fiber run is allowed for connecting switch-to-switch, or endstation-to-switch, using half-duplex 100BASE-FX. A total network span of 325m (1066ft) is allowed in single-repeater topologies (one hub stack per wiring closet with a fiber run to the collapsed backbone).
Page 38 1-16 1: I HAPTER NTRODUCING THE WITCH...
Page 39 NSTALLING THE WITCH This chapter contains the information you need to install and set up the Switch. It covers the following topics: Installing the Switch Stacking Units The Power-up Sequence Choosing the Correct Cables Assigning IP Information...
Page 40: Installing The Switch
2: I HAPTER NSTALLING THE WITCH Installing the The following sections describe how to site and install your Switch. Switch Following Safety Before installing or removing any components from the Switch or Information carrying out any maintenance procedures, you must read the safety information Appendix A of this guide.
Page 41: Rack-Mounting
Installing the Switch Rack-mounting The Switch is 1.5U high and fits in most standard 19-inch racks. ATTENTION: Disconnect all cables from the Switch before continuing. Remove all self adhesive pads from the underside of the Switch if they have been fitted. 1 Place the Switch on a hard flat surface, with the front panel facing towards you.
Page 42: Wall-Mounting
2: I HAPTER NSTALLING THE WITCH Wall-mounting A single Switch can be wall-mounted. ATTENTION: Disconnect any cables from the Switch before continuing. Remove self-adhesive pads from the underside of the Switch if they have been fitted. 1 Place the Switch the right way up on a hard flat surface, with the front facing towards you.
Page 43: Placing Units On Top Of Each Other
Stacking Units b Using suitable fixings and screws (not provided), attach the Switch securely to the wall or plywood. c Connect network cabling. Placing Units On Top If the Switch units are free-standing, up to four units can be placed one of Each Other on top of the other.
Page 44: Stacking Multiple Units
2: I HAPTER NSTALLING THE WITCH As shown in Figure 2-3, connect one end of the Matrix Cable to the matrix port of the top Switch, and the other end to the matrix port of the lower Switch. A stack of two units Figure 2-3 Stacking Multiple You can connect up to four Switch units to form a stack.
Page 45 Stacking Units 3 Connect the Matrix Cables, as shown in Figure 2-4: a Connect a Matrix Cable to the port marked Unit 1 on the Matrix Module. Connect the other end of this cable to the matrix port of the Switch that contains the Matrix Module. b Connect a second Matrix Cable to the port marked Unit 2 on the Matrix Module.
Page 46: The Power-Up Sequence
2: I HAPTER NSTALLING THE WITCH The Power-up The following sections describe how to get your Switch powered-up Sequence and ready for operation. Connecting a You can connect an Advanced Redundant Power System to the Switch. Redundant Power This unit, which is also known as an RPS, is designed to maintain the System power to your Switch if a power supply failure occurs.
Page 47: Choosing The Correct Cables
Choosing the Correct Cables Table 2-1 LED colors Color State Green The Switch is powered-up and operating normally Yellow The Switch has failed its Power On Self Test. This occurs if any of the ports fail during power-up. The Switch is not receiving power. If there is evidence of a problem, see “Solving Problems Indicated by LEDs”...
Page 48: Assigning Ip Information
2-10 2: I HAPTER NSTALLING THE WITCH Assigning IP Before using the Switch on your network, we recommend that you assign Information IP information to the Switch. If you do this, you can manage the Switch over the network. If you have multiple units connected in a stack, you only need to assign IP information to one unit in the stack.
Page 49: Setting U P For Management
ETTING P FOR ANAGEMENT This chapter explains the various ways of managing a stack, and details the steps required before you can configure a stack to suit the needs of your network. It covers the following topics: Why Manage the Stack? Methods of Managing a Stack Setting Up Web Interface Management Setting Up Command Line Interface Management...
Page 50: Why Manage The Stack
3: S HAPTER ETTING P FOR ANAGEMENT Why Manage the Network management is not required to get the stack working, but if Stack? you do use it, you can change and monitor the way the stack works. By doing this, you may improve the efficiency of the stack and therefore improve the performance of your network.
Page 51: Setting Up Web Interface Management
Setting Up Web Interface Management Setting Up Web You can access the web interface using: Interface A management workstation connected to the console port of a Management Switch, running the Serial Line Internet Protocol (SLIP). A management workstation connected to a Switch over an IP network While multiple users can access the web interface at any one time, too many users may result in a slow response time for the web pages and...
Page 52: Over The Network
3: S HAPTER ETTING P FOR ANAGEMENT Over the Network To manage the stack using the web interface over an IP network: 1 You must set up the stack with IP information. To do this: a Access the web interface of the stack through a console port. See “Through the Console Port”...
Page 53: Choosing A Suitable Browser
Setting Up Web Interface Management 3 If the files are to be accessed from a local drive or server, copy the files from the CD-ROM to the relevant directory: The help files are stored in the directory on \agent\IBM01_00\help\ the CD-ROM. The help files are accessed using the file.
Page 54: Setting Up Command Line Interface Management
3: S HAPTER ETTING P FOR ANAGEMENT Setting Up You can access the command line interface using: Command Line A terminal or terminal emulator connected to the console port of a Interface Switch directly, or through a modem Management A terminal or terminal emulator connected to a Switch over an IP network using Telnet Through the Console To manage the stack using the command line interface through the...
Page 55: Over The Network
Setting Up SNMP Management Over the Network To manage the stack using the command line interface over a network using Telnet: 1 You must set up the stack with IP information. To do this: a Access the command line interface of the stack through a console port.
Page 56: Ip Addresses
3: S HAPTER ETTING P FOR ANAGEMENT IP Addresses To operate correctly, each device on your network must have a unique IP address. IP addresses have the format n.n.n.n where n is a decimal number between 0 and 255, for example 191.128.40.120: The first part (191.128 in the example) identifies the network on which the device resides.
Page 57: Logging In As A Default User
Managing the Stack Over the Network If you have a small network (less than 254 devices), you may decide not to have subnets. A subnet mask is used to divide the device part of the IP address into two further parts: The first part identifies the subnet number.
Page 58 3-10 3: S HAPTER ETTING P FOR ANAGEMENT...
Page 59: Managing The Switch
ANAGING THE WITCH Chapter 4 Working With the Web Interface Chapter 5 Working With the Command Line Interface...
Page 61: Working With The Web Interface
ORKING ITH THE NTERFACE This chapter describes how to access and use the web interface. It covers the following topics: Accessing the Web Interface About The Getting Started Pages About the Main Web Interface Configuring the Current Switch Changing the Management Settings for the Stack Configuring the Stack Viewing Statistics for the Current Switch Throughout this chapter, the term stack refers to a number of Switches...
Page 62: Accessing The Web Interface
4: W HAPTER ORKING ITH THE NTERFACE Accessing the Web You can access the web interface through the console port or over the Interface network. To access the web interface through the console port, you must install, configure and run the Serial Web Utility described in “Using the Serial Web Utility”...
Page 63: Exiting The Web Interface
Accessing the Web Interface If you are accessing the web interface for the first time, enter a default user name and password to match your access requirements. The defaults are described in “Logging in as a Default User” on page 3-9. If you are setting up the stack for management, we suggest that you log on as admin (which has no default password).
Page 64 4: W HAPTER ORKING ITH THE NTERFACE About The Getting When you access the web interface for the first time or after a Started Pages power-off/on cycle, a set of Getting Started pages are displayed. The first Getting Started page, Getting Started - Introduction is shown in Figure 4-2.
Page 65: About The Getting Started Pages
About The Getting Started Pages If you choose to allocate IP information using a BOOTP server, no prompts are displayed. 3 The URL or file path of the online help and online documentation for the stack. If the files are installed on your management workstation, on the CD-ROM, or on a network server, you must begin the file path with file:// If the files are stored on a Web server, you must begin the URL with...
Page 66: About The Main Web Interface
4: W HAPTER ORKING ITH THE NTERFACE About the Main The main web interface is made up of three areas: Web Interface The Banner This is always displayed at the top of the browser window. It displays the name of the current Switch in the stack, and contains several External Link icons that allow you to access information outside of the web interface.
Page 67: The External Link Icons
If your management workstation has access to the World Wide Web, clicking the Library icon displays the Online Library of the IBM World Wide Web site in a second browser window. If your management workstation has access to the World...
Page 68: The Management Icons
4: W HAPTER ORKING ITH THE NTERFACE The Management The side-bar of the main web interface contains several Management Icons Icons that allow you to display web pages in the page area; these are shown in Table 4-2. Table 4-2 Management Icons and their actions Management Icon Action Management Settings —...
Page 69 About the Main Web Interface Unit Status — This page allows you to view the general administration details of the Switch. IP Setup — This page allows you to set up IP information for the Switch. Port Setup — This page allows you to configure individual ports on the Switch.
Page 70 4-10 4: W HAPTER ORKING ITH THE NTERFACE Resilient Links Setup — This page allows you to set up resilient links for the stack. Reset — This page allows you to reset the Switch units in the stack. Initialize — This page allows you to initialize the Switch units in the stack.
Page 71 About the Main Web Interface 4-11 Figure 4-4 Web interface map...
Page 72: Configuring The Current Switch
4-12 4: W HAPTER ORKING ITH THE NTERFACE Configuring the You can configure the current Switch and the ports on that Switch Current Switch using the Unit Pages. These pages allow you to: View the status of the ports on the Switch View the general administration details of the Switch Set up IP information for the Switch Configure individual ports on the Switch...
Page 73 Configuring the Current Switch 4-13 You can view the color-coding information using the Color Key page. To access the page, click the Color Key hotlink under the Switch graphic. Viewing the Speed and Duplex Mode of Ports You can view the speed and Duplex Mode of ports in the Switch graphic using the Port Summary page.
Page 74: Viewing The Administration Details Of The Switch
4-14 4: W HAPTER ORKING ITH THE NTERFACE Viewing the You can view general administration details about the Switch using the Administration Unit Status page. Details of the Switch To access the page: Click the Unit icon on the side-bar. The Unit Status page is displayed as shown in Figure 4-7.
Page 75: Setting Up Ip Information For The Switch
Configuring the Current Switch 4-15 Software Version Displays the version number of the management software currently installed on the Switch. For information about how to upgrade the management software, see “Upgrading the Management Software of the Stack” on page 4-35. Boot PROM Version Displays the version of Boot PROM software installed on the Switch.
Page 76: Configuring A Port On The Switch
4-16 4: W HAPTER ORKING ITH THE NTERFACE The IP Setup page contains the following elements: IP Address Allows you to enter a unique IP address for the Switch. For more information about IP addresses, see “Managing the Stack Over the Network”...
Page 77 Configuring the Current Switch 4-17 Figure 4-9 The Port Setup page The Port Setup page contains the following elements: Port Displays the number of the selected port. Link State Enabled / Disabled Displays the state of the link connected to the port. Media Type Displays the media type of the link connected to the port.
Page 78 4-18 4: W HAPTER ORKING ITH THE NTERFACE Fiber ports are not auto-negotiating. If the port is a fiber Expansion Module port, auto-negotiation is set to disabled and you cannot change it. With auto-negotiation enabled, the Speed/Duplex and Full Duplex Flow Control Fields display Auto and cannot be set manually.
Page 79: Configuring The Console Port Of The Switch
Configuring the Current Switch 4-19 Half Duplex Flow Control Enabled / Disabled Allows you to enable or disable the Intelligent Flow Management flow control that can be used when the port is operating in half duplex. Flow control prevents any packet loss that may occur on congested ports.
Page 80 4-20 4: W HAPTER ORKING ITH THE NTERFACE Figure 4-10 The Console Port Configuration page The Console Port Configuration page contains the following elements: Console connection Terminal / Modem Allows you to specify the device that you are connecting to the console port.
Page 81: Changing The Management Settings For The Stack
Changing the Management Settings for the Stack 4-21 Changing the You can change the management settings for the stack using the Management Management Settings Pages. These pages allow you to: Settings for the Specify a descriptive name for the stack. Stack Change your password.
Page 82: Changing Your Password
4-22 4: W HAPTER ORKING ITH THE NTERFACE Changing Your You can change the password for your user using the Password Setting Password page. To access the page: 1 Click the Management Settings icon on the side-bar. 2 Click the Password Setting hotlink. The Password Setting page is displayed as shown in Figure 4-12.
Page 83: Specifying The Physical Location Of The Stack
Changing the Management Settings for the Stack 4-23 Specifying the You can specify the physical location of the stack using the Location page. Physical Location of the Stack To access the page: 1 Click the Management Settings icon on the side-bar. 2 Click the Location hotlink.
Page 84: Specifying The Location Of The Online Help And Documentation
4-24 4: W HAPTER ORKING ITH THE NTERFACE Specifying the You can specify the location of the online help and documentation for Location of the the stack using the Documentation page. Online Help and To access the page: Documentation 1 Click the Management Settings icon on the side-bar. 2 Click the Documentation hotlink.
Page 85: Specifying A Contact For The Stack
Changing the Management Settings for the Stack 4-25 Specifying a Contact You can specify the details of a person to contact about the stack using the Contact page. for the Stack To access the Contact page: 1 Click the Management Settings icon on the side-bar. 2 Click the Contact hotlink.
Page 86: Configuring The Stack
4-26 4: W HAPTER ORKING ITH THE NTERFACE Configuring the You can configure the stack using the Configuration pages. These Stack pages allow you to: Configure the Switch Database of the stack Configure the operating modes of the stack Set up resilient links for the stack Reset the Switch units in the stack Initialize the Switch units in the stack Upgrade the management software of the Switch units in the stack...
Page 87 Configuring the Stack 4-27 What is the Switch Database? The Switch Database is used by the stack to determine if a packet should be forwarded, and which port should forward the packet if it is to be forwarded. The database contains a list of entries, each containing two items: The MAC (Ethernet) address information from each endstation that sends packets to the stack.
Page 88 4-28 4: W HAPTER ORKING ITH THE NTERFACE MAC Address Displays the MAC (Ethernet) address for the entry. Status Learned / Permanent Displays the state of the entry. To display a subset of the entries: 1 From the Port Selection Filter drop-down listbox, select a port that has submitted the relevant entries.
Page 89: Configuring The Operating Modes Of The Stack
Configuring the Stack 4-29 Deleting Entries from the Switch Database The Switch Database page allows you to delete entries from the Switch Database. To delete an entry: 1 In the Enter MAC Address field, enter the MAC (Ethernet) address for the entry.
Page 90 4-30 4: W HAPTER ORKING ITH THE NTERFACE The Advanced Stack Setup page contains the following elements: Forwarding Mode Fast Forward / Fragment Free / Store and Forward / Intelligent Allows you to set the Forwarding Mode for the stack: Fast Forward —...
Page 91: Setting Up Resilient Links For The Stack
Configuring the Stack 4-31 broadcast traffic on the port is blocked until the broadcast traffic returns to 20%. Setting Up Resilient You can set up resilient links for the stack using the Resilient Links page. Links for the Stack To access the page: 1 Click the Configuration icon on the side-bar.
Page 92 4-32 4: W HAPTER ORKING ITH THE NTERFACE The resilient link pair is defined by specifying a main port and a standby port at one end of the link. If the main link fails, the main port is disabled and the standby port is enabled. If the main port has a higher bandwidth than the standby port, the main port is automatically re-enabled if no link failure is detected for 2 minutes.
Page 93: Resetting All The Units In The Stack
Configuring the Stack 4-33 Creating a Resilient Link Pair The Resilient Links page allows you to create a resilient link pair. To do this: 1 Click the Add... button. The first Add Resilient Links page is displayed. 2 Select the Switch units that are to contain the main port and standby port of the resilient link pair.
Page 94: Initializing All The Units In The Stack
4-34 4: W HAPTER ORKING ITH THE NTERFACE What Happens During a Reset? Resetting the Switch units in the stack simulates a power-off/on cycle. You may want to do this if you need to: Remove all the Learned entries in the Switch Database (SDB). Reset the statistic counters of the stack.
Page 95: Upgrading The Management Software Of The Stack
Configuring the Stack 4-35 Upgrading the You can upgrade the management software of the Switch units in the stack using the Software Upgrade page. Management Software of the To access the page: Stack 1 Click the Configuration icon on the side-bar. 2 Click the Software Upgrade hotlink.
Page 96: Viewing Statistics For The Current Switch
4-36 4: W HAPTER ORKING ITH THE NTERFACE Viewing Statistics You can view statistics for the current Switch in the stack using the for the Current Health pages. These pages allow you to: Switch Display a range of statistics for all the ports on the Switch. Display a range of statistics for a specific port on the Switch.
Page 97: Displaying Port Statistics
Viewing Statistics for the Current Switch 4-37 To display the Bandwidth Utilization graph: 1 From the drop-down listbox, choose Bandwidth Utilization. 2 Click Apply. To display the Total Errors graph: 1 From the drop-down listbox, choose Total Errors. 2 Click Apply. If you click a port on the Bandwidth Utilization or Total Errors graph, the graph for that port is displayed.
Page 98 4-38 4: W HAPTER ORKING ITH THE NTERFACE The graphs displayed by the Port Graph page Figure 4-21 You can choose to display graphs for Utilization, Total Errors or Packet Size distribution: To display the Utilization graph: 1 From the first drop-down listbox, choose a port. 2 From the second drop-down listbox, choose Utilization.
Page 99 Viewing Statistics for the Current Switch 4-39 To display the Packet Size Distribution graph: 1 From the first drop-down listbox, choose a port. 2 From the second drop-down listbox, choose Packet Size Distribution. 3 Click Apply. Interpreting the Statistics The Utilization graph scales automatically to display the percentage of bandwidth used on the port over the last hour and last 48 hours: A bandwidth utilization of 0–25% indicates that the port is dealing with a light traffic load.
Page 100 4-40 4: W HAPTER ORKING ITH THE NTERFACE...
Page 101: Working With The Command Line Interface
ORKING ITH THE OMMAND NTERFACE This chapter describes how to access and use the command line interface. It covers the following topics: Accessing the Interface About the Interface Menus A Quick Guide to the Commands Viewing and Changing Information About Ports in the Stack Viewing and Changing IP-related Information Viewing and Changing Information About the Stack Throughout this chapter, the term stack refers to a number of Switches...
Page 102: Accessing The Interface
5: W HAPTER ORKING ITH THE OMMAND NTERFACE Accessing the Interface To access the command line interface, take the following steps: 1 Set up your network for command line interface management; for more information, see “Setting Up Command Line Interface Management”...
Page 103: Exiting The Interface
About the Interface Menus Exiting the Interface You can exit the command line interface at any time; to do this, enter the command logout from the top level of the command line interface. If there is a period if inactivity lasting longer than 30 minutes, you exit from the command line interface automatically.
Page 104: Entering Commands
5: W HAPTER ORKING ITH THE OMMAND NTERFACE From the Top-level menu, you can access three sub-menus. Ethernet Menu This menu contains commands that allow you to enable or disable the ports in the stack, and view status information about them. IP Menu This menu contains commands that allow you to view and change IP-related information for the stack and PING other devices in your...
Page 105: Displaying Menus
About the Interface Menus To enter multiple commands: At the prompt, enter each command in succession. For example, to display the system menu and then reset the Switch units in the stack, enter: Select menu option: system reset To enter commands that require values: Append the values to the name of the command.
Page 106: A Quick Guide To The Commands
5: W HAPTER ORKING ITH THE OMMAND NTERFACE A Quick Guide to Table 5-1 describes the commands that are available in the command the Commands line interface. Command line interface commands Table 5-1 Command What does it do? Exits the current user from the command line logout interface.
Page 107: Viewing And Changing Information About Ports In The Stack
Viewing and Changing Information About Ports in the Stack Viewing and You can view and change information about the ports on the current Changing Switch unit in the stack using the commands on the Ethernet menu. Information About These commands allow you to: Ports in the Stack Enable and disable Ethernet ports on the Switch View information about the status of Ethernet ports on the Switch...
Page 108: Viewing Port Status Information
5: W HAPTER ORKING ITH THE OMMAND NTERFACE Viewing Port Status You can view information about the status of Ethernet ports on the Information Switch using the summary command on the Ethernet menu. To view the port status information: 1 At the Top-level menu, enter: ethernet summary The following prompt is displayed: Select Ethernet port (1-24|all):...
Page 109: Specifying Ip And Slip Information
Viewing and Changing Information About Ports in the Stack Specifying IP and You can specify IP and SLIP information for the current Switch unit in the stack using the define command on the Interface menu, which is SLIP Information accessed from the IP menu. To specify the IP and SLIP information: 1 At the Top-level menu, enter: ip interface define...
Page 110: Displaying Ip And Slip Information
5-10 5: W HAPTER ORKING ITH THE OMMAND NTERFACE The following prompt is displayed: Enter SLIP subnet mask [255.255.0.0]: A SLIP subnet mask is similar to an IP subnet mask, but, like the SLIP address, it is used for serial line connections to console ports. 6 Enter a SLIP subnet mask, if required.
Page 111: Pinging Other Devices On Your Network
Viewing and Changing Information About Ports in the Stack 5-11 The following prompt is displayed: Enter new value (enabled, disabled) [enabled]: 2 Enter enabled to specify that the Switch uses BOOTP, or disabled to specify that it does not. Pinging Other The PING feature allows you to send out a PING request to test Devices On Your whether devices on your network are accessible and functioning...
Page 112: Viewing And Changing Information About The Stack
5-12 5: W HAPTER ORKING ITH THE OMMAND NTERFACE Viewing and You can view and change information about the Switch units in the Changing stack or the stack as a whole using the commands on the System Information About menu. These commands allow you to: the Stack Move the focus of the command line interface from one Switch unit in the stack to another...
Page 113: Displaying Configuration Information About The Current Switch
From the top-level menu, enter: system display The configuration information is displayed. An example of the information is shown below: IBM 8271 Nways Ethernet Switch Model F24 Unit Name: Development Location: Wiring closet, Floor 2 Contact: Edward Monk Time since reset: 2 days, 3 hours, 10 minutes Operational Version: 1.00...
Page 114: Displaying Summary Information About The Switch Units In The Stack
5-14 5: W HAPTER ORKING ITH THE OMMAND NTERFACE Time Since Reset Displays the time that has elapsed since the unit was last reset, initialised or powered-up. Operational Version Displays the version number of the management software currently installed on the unit. For information about how to upgrade the management software, see “Upgrading the Management Software of the Stack”...
Page 115: Changing Your Password
Viewing and Changing Information About the Stack 5-15 You can have up to four Switch units in a stack: If the stack contains one unit, that unit is unit 1 If the stack contains two units connected using a Matrix Cable, the first unit to be powered-up is unit 1 and the other unit is unit 2.
Page 116: Enabling And Disabling Remote Access To The Stack
5-16 5: W HAPTER ORKING ITH THE OMMAND NTERFACE The following prompt is displayed, allowing you to re-enter the new password as conformation: Retype password: A message is displayed informing you that the password has been successfully changed. Enabling and As a basic security measure, you can enable or disable remote access to Disabling Remote the management software of the stack:...
Page 117: Resetting The Switch Units In The Stack
Viewing and Changing Information About the Stack 5-17 Resetting the Switch You can reset the Switch units in the stack using the reset command on the System menu. Units in the Stack To reset the units: 1 At the top-level menu, enter: system reset The following prompt is displayed: Are you sure you want to reset the system (y/n) [y]:...
Page 118: Upgrading The Management Software Of The Stack
5-18 5: W HAPTER ORKING ITH THE OMMAND NTERFACE What Happens During an Initialization? Initializing the Switch units in the stack returns them to their default (factory) settings. You may want to do this if the stack has previously been used in a different part of your network, and its settings are incorrect for the new environment.
Page 119 Viewing and Changing Information About the Stack 5-19 4 Enter the name of the software upgrade file. The filename format is: nwsxx_yy.bin where xx_yy is the version of management software. During the upgrade, the Power/Self Test LED flashes green and the command line interface is locked.
Page 120 5-20 5: W HAPTER ORKING ITH THE OMMAND NTERFACE...
Page 121: Advanced Networking
DVANCED ETWORKING EATURES Chapter 6 Spanning Tree Protocol Chapter 7 RMON...
Page 123: Spanning Tree Protocol
PANNING ROTOCOL Using the Spanning Tree Protocol (STP) functionality of your stack makes your network more fault tolerant. This chapter explains more about STP and the STP features supported by the stack. It covers the following topics: What is STP? How STP Works Enabling STP on a Stack STP is a part of the 802.1d bridge specification defined by the IEEE...
Page 124: What Is Stp
6: S HAPTER PANNING ROTOCOL What is STP? STP is a bridge-based system for providing fault tolerance on networks. It allows you to implement parallel paths for network traffic, and ensure that: Redundant paths are disabled when the main paths are operational Redundant paths are enabled if the main paths fail As an example, Figure 6-1 shows a network containing three LAN segments separated by three bridges.
Page 125 What is STP? Figure 6-2 Traffic flowing through Bridges C and A Figure 6-3 Traffic flowing through Bridge B...
Page 126: How Stp Works
6: S HAPTER PANNING ROTOCOL How STP Works STP Initialization Initially, the STP system requires the following before it can configure the network: Communication between all the bridges. This communication is carried out using Bridge Protocol Data Units (BPDUs), which are transmitted in packets with a known multicast address.
Page 127: Stp Reconfiguration
How STP Works 2 After all the bridges on the network have determined the configuration of their ports, each bridge only forwards traffic between the Root Port and the ports that are the Designated Bridge Ports for each network segment. All other ports are blocked, which means that they are prevented from forwarding traffic.
Page 128: Stp Configurations
SNMP Network Manager. STP Configurations Figure 6-5 shows two possible STP configurations using IBM 8271 Nways units: Configuration 1 — Redundancy for Backbone Link In this configuration, a Model E24 and a Model F24 both have STP enabled and are connected by two links.
Page 129 How STP Works Configuration 3 — Redundancy for Cabling Error In this configuration, a Model E24 has STP enabled and is accidentally connected to a repeater using two links. STP discovers a duplicate path and disables one of the links, therefore avoiding a loop.
Page 130: Enabling Stp On A Stack
6: S HAPTER PANNING ROTOCOL Enabling STP on a Stack To enable STP on a stack: 1 From the web interface, click the Configuration icon on the side-bar. The Stack Setup page is displayed. 2 From the Spanning Tree drop-down listbox, select Enabled. You cannot enable STP if you have set up resilient links on any of the stack ports.
Page 131: Rmon
RMON Using the RMON (Remote Monitoring) capabilities of a stack allows network administrators to improve their efficiency and reduce the load on their network. This chapter explains more about the RMON concept and the RMON features supported by the stack. It covers the following topics: What is RMON? Benefits of RMON RMON and the Stack...
Page 132: What Is Rmon
7: RMON HAPTER What is RMON? RMON is the common abbreviation for the Remote Monitoring MIB (Management Information Base), a system defined by the IETF documents RFC 1271 and RFC 1757, which allows you to monitor LANs remotely. A typical RMON setup consists of two components: The RMON probe —...
Page 133 What is RMON? Alarms The Alarms group provides a versatile, general mechanism for setting thresholds and sampling intervals to generate events on any RMON variable. Both rising and falling thresholds are supported, and thresholds can be on the absolute value of a variable or its delta value. In addition, alarm thresholds may be autocalibrated or set manually.
Page 134: Benefits Of Rmon
7: RMON HAPTER Capture The Capture group allows you to create capture buffers on the probe that can be requested and uploaded to the management workstation for decoding and presentation. The group is not supported in this release of software. Events The Events group provides you with the ability to create entries in an event log and/or send SNMP traps to the management workstation.
Page 135: Rmon And The Stack
RMON and the Stack It reduces the load on the network and the management workstation Traditional network management involves a management workstation polling network devices at regular intervals to gather statistics and identify problems or trends. As network sizes and traffic levels grow, this approach places a strain on the management workstation and also generates large amounts of traffic.
Page 136: Rmon Features Of The Stack
7: RMON HAPTER RMON Features of Table 7-1 details the RMON support provided by the stack. the Stack RMON support supplied by the stack Table 7-1 RMON Group Support supplied by the stack Statistics A new or initialized stack has one Statistics session per port. History A new or initialized stack has two History sessions per port.
Page 137: About Alarm Actions
RMON and the Stack The greater the number of RMON sessions, the greater the burden on the management resources of the stack. The forwarding performance of the stack is not affected, however, with a large number of RMON sessions, you may experience slow response times from the web interface.
Page 138: About Default Alarm Settings
7: RMON HAPTER About Default Alarm A new or initialized stack has four alarms defined for each port: Settings Broadcast bandwidth used Percentage of errors over one minute The default values and actions for each of these alarms are given in Table 7-3.
Page 139: Problem
ROBLEM OLVING Chapter 8 Problem Solving...
Page 141: Problem
ROBLEM OLVING This chapter contains a list of known problems and suggested solutions. It covers the following topics: Solving Problems Indicated by LEDs Solving Problems That Occur When Using the Web Interface Solving Problems That Occur When Using the Command Line Interface Solving Problems That Occur When Using an SNMP Network Manager...
Page 142: Solving Problems Indicated By Leds
8: P HAPTER ROBLEM OLVING Solving Problems A Power LED does not light. Check that the power cable is firmly Indicated by LEDs connected to the relevant Switch unit and to the supply outlet. If the connection is secure and there is still no power, you may have a faulty power cord.
Page 143 Solving Problems That Occur When Using the Web Interface The Web browser can no longer access the stack over the network. Check that: Remote access to the management software of the stack has not been disabled. For more information, see “Enabling and Disabling Remote Access to the Stack”...
Page 144 8: P HAPTER ROBLEM OLVING To do this for Netscape Navigator Version 3.0: 1 Start Netscape Navigator. 2 From the Options menu, select Network Preferences. 3 The Preferences dialog box appears. 4 Check the Every Time checkbox. 5 Click OK. To do this for Microsoft Internet Explorer Version 3.0: 1 Start Microsoft Internet Explorer.
Page 145: Solving Problems That Occur When Using The Command Line Interface
Solving Problems That Occur When Using the Command Line Interface Solving Problems The terminal or terminal emulator cannot access the stack. Check That Occur When that: Using the Your terminal or terminal emulator is correctly configured to operate Command Line as a generic (TTY) terminal, or a VT100 terminal.
Page 146: Solving Problems That Occur When Using An Snmp Network Manager
8: P HAPTER ROBLEM OLVING You forget your password and cannot log in. Ask another user with Security access level to log in and initialize the stack. This returns the Switch units in the stack to their default (factory) settings, including any password information.
Page 147: Solving Problems With The Serial Web Utility
Solving Problems With the Serial Web Utility The SNMP Network Manager can no longer access the stack. Check that: Remote access to the management software of the stack has not been disabled. For more information, see “Enabling and Disabling Remote Access to the Stack” on page 5-16. The port through which you are trying to access the stack has not been disabled.
Page 148: Solving Problems With The Management Software Upgrade Utility
8: P HAPTER ROBLEM OLVING Solving Problems An error occurs when the utility attempts to connect through the With the serial port of the PC. The serial port being used is not the same as Management the serial port specified in the upgrade command. Retry the command Software Upgrade ensuring that you specify a value of ‘1’...
Page 149: Solving Other Problems
Solving Other Problems An error occurs when the utility attempts to transfer the file. There could be a number of reasons for this: The null modem cable has become disconnected from the Switch or the PC during the file transfer. Reconnect the cable and start again. Power to the Switch has been disrupted during the file transfer.
Page 150 8-10 8: P HAPTER ROBLEM OLVING...
Page 151 PPENDICES AND NDEX Appendix A Safety Information Appendix B Using the Serial Web Utility Appendix C Management Software Upgrade Utility Appendix D Pin-outs Appendix E Switch Technical Specifications Appendix F Technical Support and Service Appendix G Notices, Trademarks, and Warranties Glossary Index...
Page 153 AFETY NFORMATION You must read the following safety information before carrying out any installation or removal of components, or any maintenance procedures on the Switch. Power Cords A country-appropriate power cord must be ordered separately for each 8271 Ethernet LAN Switch. The feature codes and part numbers to be used to order these power cords are listed below.
Page 154 A: S PPENDIX AFETY NFORMATION Part Number Country (Feature Code) Bahamas Guyana 1838574 (F/C 6853) Barbados Haiti Bolivia Honduras Brazil Jamaica Costa Rica N. Antilles Dominican R. Panama El Salvador Peru Equador Trinidad Guatemala Venezuela Europe, Middle East, and Africa Albania Macedonia 13F9979 (F/C 6855)
Page 155: Important Safety Information
Important Safety Information Part Number Country (Feature Code) Ethiopia Italy 14F0069 (F/C 6858) Israel 14F0087 (F/C 6860) Switzerland Liechtenstein 14F0051 (F/C 6859) Namibia Swaziland 14F0015 (F/C 6861) Pakistan Zimbabwe South Africa Liberia 1838574 (F/C 6853) Asia Pacific Australia New Zealand 13F9940 (F/C 6854) Brunei Malaysia...
Page 156 A: S PPENDIX AFETY NFORMATION DANGER: Ein- und Ausbau des Gerätes ist nur von Fachpersonal vorzunehmen. Gevaar! De eenheid mag alleen worden geïnstalleerd of verwijderd doorbevoegde personen. Perigo: A instalação e remoção da unidade deve ser feita apenas porpessoal especializado. Fare! Installation og afmontering af enheden skal udføres afuddannet personale.
Page 157 Important Safety Information Монтаж и демонтаж оборудования должен выполнять только квалифицированный персонал.
Page 158 A: S PPENDIX AFETY NFORMATION DANGER: It is essential that the mains socket outlet is installed near to the unit and is accessible. You can only disconnect the unit by removing the appliance coupler from the unit. DANGER: C'est essentiel que le socle soit installé près de l'unité et soit accessible.
Page 159 Important Safety Information Perigo: É essencial que a tomada eléctrica seja instalada próximo da unidade e que seja facilmente acessível. Só é possível desligar totalmente a alimentação, retirando a ficha de ligação da unidade. Peligro: Es muy importante que la toma de alimentación del zócalo esté instalada cerca de la unidad y que sea accesible.
Page 160 A: S PPENDIX AFETY NFORMATION Очень важно, чтобы электрическая розетка находилась рядом с блоком, и чтобы она ничем не была загорожена. Блок можно отсоединить, только отсоединив от него шнур питания. Zelo pomembno je, da je glavna vtiènica blizu naprave in da je dostopna.Napravo je možno izkljuèiti samo tako, da potegnete prikljuèni vtiè...
Page 161 Important Safety Information Perigo: Esta unidade funciona sob condições SELV (Safety Extra Low Voltage) de acordo com IEC 950 mas, essa situação é mantida apenas se oequipamento ao qual ela est conectada também funcionar sob a condição SELV. Fare! Denne enhed fungerer ved svagstrøm i henhold til betingelsernei IEC 950.
Page 162 A-10 A: S PPENDIX AFETY NFORMATION om utrustning till vilken enheten ansluts också arbetar med skyddsklenspänning. Это устройство работает по стандарту IEC 950 в условиях Безопасно низкого напряжения (SELV) только при условии, что все оборудование в цепи отвечает стандартам SELV.
Page 163 Important Safety Information A-11 DANGER: Ensure that the power supply lead is disconnected before removing the cover of the unit. DANGER: Assurer que l'entrée de la source d'alimentation soit débranchée avant d'ouvrir le couvercle de fusible du connecteur IEC ou d'enlever le couvercle de l'unité.
Page 164 A-12 A: S PPENDIX AFETY NFORMATION Varra: Varmista, että olet irrottanut verkkojohdon, ennen kuin avaat IEC-liittimen sulakekotelon kannen tai irrotat yksikön kannen. Pericolo: Prima di aprire il coperchio del fusibile del connettore IEC oppure prima di rimuovere il coperchio dell’unità, accertarsi che il cavo dell’alimentatore sia scollegato.
Page 165 Important Safety Information A-13 Перед тем, как открывать крышку предохранителя разъема IEC или снимать крышку блока, убедитесь, что подводящий электропровод отсоединен от сети. Preden odprete pokrov za varovalko na IEC vtièu ali odprete pokrov naprave, morate izkljuèiti elektrièno napajanje. DANGER: The sockets for a Redundant Power System are designed to only be used with a recommended RPS.
Page 166 A-14 A: S PPENDIX AFETY NFORMATION Perigo: Esses soquetes foram projetados paraserem utilizados apenas com uma Fonte de Alimentação Redundante recomendada. Fare! Disse sokler må kun bruges sammen med enanbefalet RPS (Redundant Power Supply). Gevaar: Deze aansluitingen mogen alleenmet een aanbevolen reservevoeding worden gebruikt.
Page 167 Important Safety Information A-15 Опасно: Эти гнезда предназначены для использования только с рекомендованным дополнительным источником питания. Nevarnost ! Te vtiènice so namenjene samo za uporabo s priporoèenim redundantnim napajalnikom. DANGER: The RJ45 ports are shielded RJ45 data sockets. They cannot be used as telephone sockets.
Page 168 A-16 A: S PPENDIX AFETY NFORMATION sockets. Either shielded or unshielded data cables with shielded or unshielded jacks can be connected to these data sockets. DANGER: Ceux-ci sont les prises de courant de données RJ45 protégées. Ils ne peuvent pas être utilisés comme prises de courant téléphoniques. Brancher seulement les connecteurs RJ45 de données à...
Page 169 Important Safety Information A-17 taisuojaamattomia datakaapeleita, joissa on suojattu tai suojaamatonpistoke. Pericolo: Le porte RJ45 sono schermate e riservate alla trasmissione di dati; esse non possono essere utilizzate come prese telefoniche. Collegare a queste porte soltanto connettoriper dati RJ45. A queste porte possono essere collegati sia cavischermati che non schermati dotati di connettori schermati onon schermati.
Page 170 A-18 A: S PPENDIX AFETY NFORMATION...
Page 171 Important Safety Information A-19 Опасно: Порты RJ45 представляют собой экранированные сигнальные гнезда RJ45. Их нельзя использовать в качестве телефонных гнезд. К этим гнездам можно подсоединять только сигнальные разъемы RJ45. К этим сигнальным гнездам разрешается подсоединять экранированные или неэкранированные сигнальные кабели с экранированными или неэкранированными разъемами.
Page 172 A-20 A: S PPENDIX AFETY NFORMATION DANGER: Cette unité ne peut pas être mise en marche des sources de courant IT (Impédance à la terre). Si vos sources de courant sont de type IT, cette unité doit être alimentée par 230V (2P+T) via un rapport de transformation d'isolation de 1:1, avec un point de connexion secondaire étiqueté...
Page 173 Important Safety Information A-21...
Page 174 A-22 A: S PPENDIX AFETY NFORMATION...
Page 175: Installing The Serial Web Utility
By default, the Serial Web Utility is installed in the following directory: C:\Program Files\IBM\IBM Serial Web This can be changed during the installation if required. To install the Serial Web Utility: 1 Start Windows 95.
Page 176 B: U PPENDIX SING THE ERIAL TILITY 3 Select Run from the Start menu. 4 In the Run dialog box, type drive :\Win95\Drivers\Slip\SETUP (where is the letter of your CD-ROM drive) and click OK. drive The installation program starts and checks your system configuration; enter any information that is requested.
Page 177 Using the Serial Web Utility You can change the PC SLIP Address, Device URL, Flow Control and Speed settings after the installation is complete. 6 When you have finished, the final installation dialog box is displayed informing you that the Serial Web Utility has been installed on your management workstation.
Page 178 B: U PPENDIX SING THE ERIAL TILITY If successful, the standard Windows Dial-Up Networking dialog box is displayed, showing the various connection details. Your default Web browser is then launched with the specified URL. The connection is complete if the password panel of the Web interface is displayed.
Page 179: Using The Upgrade Utility
ANAGEMENT OFTWARE PGRADE TILITY The CD-ROM supplied with the Switch includes a management software upgrade utility. This utility can be used to upgrade the management software of the Switch if a previous software upgrade has failed, and you are unable to communicate with the Switch using the web interface.
Page 180 C: M PPENDIX ANAGEMENT OFTWARE PGRADE TILITY 5 Enter the upgrade command: update nwsxx_yy.bin Where xx_yy is the version of management software. The version of management software on the CD-ROM is the one that is originally installed on the Switch. Display the contents of the CD-ROM to see the filename for this version of management software.
Page 181: Null Modem Cable
OUTS Null Modem Cable 9-pin to RS-232 25-pin PC-AT Serial Cable 9-pin to 9-pin...
Page 182: Rj45 Pin Assignments
D: P PPENDIX OUTS Modem Cable 9-pin to RS-232 25-pin RJ45 Pin Pin assignments are identical for 10BASE-T and 100BASE-TX RJ45 Assignments connectors Pin assignments Table D-1 Pin Number Signal Function Ports configured as MDI TxData + Transmit data TxData – Transmit data RxDta + Receive Data...
Page 183 RJ45 Pin Assignments Pin assignments Table D-1 Pin Number Signal Function Ports configured as MDIX RxDta + Receive Data RxData – Receive Data TxData + Transmit data Not assigned Not assigned TxData – Transmit data Not assigned Not assigned...
Page 184 D: P PPENDIX OUTS...
Page 185: Technical Specifications
WITCH ECHNICAL PECIFICATIONS Physical Dimensions Height: 76mm (3.0 in.) x Width: 483mm (19.0 in.) x Depth 300mm (12.0 in.) Weight: 4kg (8.8lbs) Environmental Requirements Operating Temperature 0° to 50°C (32° to 122°F) Storage Temperature –10° to +70°C (14° to 158°F) Operating Humidity 10 –...
Page 186 E: S PPENDIX WITCH ECHNICAL PECIFICATIONS Standards Supported SNMP Terminal Emulation SNMP protocol (RFC 1157) Telnet (RFC 854) MIB-II (RFC 1213) Protocols Used for Administration Bridge MIB (RFC 1493) UDP (RFC 768) Repeater MIB (RFC 1516) IP (RFC 791) VLAN MIB (RFC 1573) ICMP (RFC 792) RMON MIB (RFC 1271) TCP (RFC 793)
Page 187: Upport And
ERVICE This appendix provides contacts for help if you have questions about the IBM 8271 Nways Ethernet LAN Switch products or if the IBM 8271 Nways Ethernet LAN Switch products are not working correctly. It also explains how to access the IBM electronic sites to obtain the latest versions of microcode and release notes.
Page 188 F: T PPENDIX ECHNICAL UPPORT AND ERVICE...
Page 189: Trademarks , And
ARRANTIES References in this publication to IBM products, programs, or services do not imply that IBM intends to make these available in all countries in which IBM operates. Any reference to an IBM product, program, or service is not intended to state or imply that only IBM’s product, program, or service may be used.
Page 190: Rademarks And Arranties
Regardless of the Machine's production status, IBM's warranty terms apply. The IBM Warranty for IBM warrants that each Machine 1) is free from defects in materials and Machines workmanship and 2) conforms to IBM's Official Published Specifications. The warranty period for a Machine is a specified, fixed period commencing on its Date of Installation.
Page 191: Warranty Service
IBM or your reseller will repair or replace it with one that is at least functionally equivalent, without charge. The replacement may not be new, but it will be in good working order. If IBM or your reseller is unable to repair or replace the Machine, you may return it to your place of purchase and your money will be refunded.
Page 192: Extent Of Warranty
IBM or your reseller of changes in a Machine's location. IBM is responsible for loss of, or damage to, a Machine while it is 1) in IBM’s possession or 2) in transit in those cases where IBM is responsible for the transportation charges.
Page 193: Electronic Emission Notices For Shielded Twisted Pair (Stp) Cable
Properly shielded and grounded cables and connectors must be used in order to meet FCC emission limits. IBM is not responsible for any radio or television interference caused by using other than recommended cables...
Page 194: Canadian Department Of Communications (Doc) Compliance
This product is in conformity with the protection requirements of EU (CE) Mark of Council Directive 89/336/EEC on the approximation of the laws of the Conformity Member States relating to electromagnetic compatibility. IBM cannot Statement for accept responsibility for any failure to satisfy the protection requirements Shielded Cable resulting from a non-recommended modification of the product, including the fitting of non-IBM option cards.
Page 195: Cispr22 Compliance Statement For Shielded Cable
ßern. Anmerkung: Um die Einhaltung des EMVG sicherzusellen sind die Geräte, wie in den IBM Handüchern angegeben, zu installieren und zu betreiben. CISPR22 Compliance This product has been tested and found to comply with the limits for Statement for...
Page 196: Taiwanese Class A Warning Statement
G: N PPENDIX OTICES RADEMARKS ARRANTIES Taiwanese Class A Warning Statement Korean Please note that this device has been approved for business purpose with Communications regard to electromagnetic interference. If you find this is not suitable for Statement your use, you may exchange it for a non-business purpose one. Electronic Emission Notices for Unshielded Twisted...
Page 197: Canadian Department Of Communications (Doc) Compliance
Electronic Emission Notices for Unshielded Twisted Pair (UTP) Cable IBM is not responsible for any radio or television interference caused by unauthorized changes or modifications to this equipment. Unauthorized changes or modifications could void the user's authority to operate the equipment.
Page 198: Japanese Voluntary Control Council For Interference (Vcci) Statement
OTICES RADEMARKS ARRANTIES Verantworlich für die Konformitätserklärung nach Paragraph 5 des EMVG ist die IBM Corporation. Deutschland Informationssysteme GmbH, 70547 Stuttgart. Informationen in Hinsicht EMVG Paragraph 3 Abs. (2) 2: Das Gerät erfüllt die Schutzanforderungen nach EN.50082-1 und EN 55022 Klasse A.
Page 199: Taiwanese Class A Warning Statement
Electronic Emission Notices for Unshielded Twisted Pair (UTP) Cable G-11 Taiwanese Class A Warning Statement Korean Please note that this device has been approved for business purpose with Communications regard to electromagnetic interference. If you find this is not suitable for Statement your use, you may exchange it for a non-business purpose one.
Page 200 G-12 G: N PPENDIX OTICES RADEMARKS ARRANTIES...
Page 201 LOSSARY 10BASE-T The IEEE 802.3 specification for Ethernet over Unshielded Twisted Pair (UTP) cabling. 100BASE-FX 100 Mbps Ethernet implementation over fiber. 100 Mbps Ethernet implementation over Category 5 and Type 1 100BASE-TX Twisted Pair cabling. ageing The automatic removal of dynamic entries from the Switch Database which have timed-out and are no longer valid.
Page 202 LOSSARY console port The port on the Switch accepting a terminal or modem connector. It changes the parallel arrangement of data within computers to the serial form used on data transmission links. This port is most often used for dedicated local management. CSMA/CD Carrier-sense Multiple Access with Collision Detect.
Page 203 LOSSARY with full-stops (periods), and is made up of a network section, an optional subnet section and a host section. Local Area Network. A network of connected computing resources (such as PCs, printers, servers) covering a relatively small geographic area (usually not larger than a floor or building). Characterized by high data rates and low error rates.
Page 204 LOSSARY server farm A cluster of servers in a centralized location serving a large user population. SLIP Serial Line Internet Protocol. A protocol which allows IP to run over a serial line connection. SNMP Simple Network Management Protocol. A protocol originally designed to be used in managing TCP/IP internets.
Page 205 NDEX Color Key page 4-13 NDEX 4-12 color-coding of ports, viewing command area of the command line interface command line interface accessing Ethernet Menu exiting IP Menu menu description Symbols moving the focus of 5-12 ? command number of simultaneous users solving problems System Menu Numerics...
Page 206 7-3, 7-6 Hosts Top N (RMON group) 1-9, 3-2 command line interface methods setting up SNMP 1-9, 3-2 IBM World Wide Web site, accessing 1-9, 3-2, 4-1 web interface icons 4-21 management settings for the stack, changing Configuration Management Settings icon...
Page 207 NDEX Management Software Upgrade Utility serial cable 4-35, 5-18, C-1 5-11 management software, upgrading ping command Managment Software Upgrade Utility pin-outs 4-27 solving problems Port column (Switch Database page) 4-17 map of the command line interface Port field (Port Setup page) 4-11 map of the web interface Port Graph page...
Page 208 NDEX 4-33 swapping the main and standby ports specifications, system resilient links 4-13 speed of the ports, viewing 4-31 description Speed/Duplex listbox (Port Setup page) 4-18 4-31 setting up 4-26, 5-12 stack, configuring 4-31 Resilient Links page standards supported RMON Standby Link column (Resilient Links page) 4-32 alarm events...
Page 209 1-9, 3-2, 4-1 web interface management user name World Wide Web (WWW) entering IBM Networking home page user name and password dialog Voice support wall mounting a Switch Web browsers required for the web interface Web browsers, configuring web interface...
Page 210 NDEX...

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