3com CoreBuilder 5000 100BASE-TX Workgroup FastModule User Guide

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CoreBuilder™ 5000

100BASE-TX Workgroup FastModule User Guide

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Document Number 17-00904-2 Published May 1997

3Com Corporation 5400 Bayfront Plaza Santa Clara, California 95052-8145

Copyright © 3Com Corporation, 1997. 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 Corporation. Portions of this document are reproduced in whole or part with permission from third parties.

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Restricted Rights Legend: Use, reproduction, or disclosure is subject to restrictions set forth in subparagraph (a) through (d) of the Commercial Computer Software – Restricted Rights Clause at 48 C.F.R. 52.227-19 and the limitations set forth in the 3Com Corporation standard commercial agreement for the software. Unpublished rights reserved under the copyright laws of the United States.

If there is any software on removable media described in this documentation, it is furnished under a license agreement included with the product as a separate document, in the hardcopy documentation, or on the removable media in a directory file named LICENSE.TXT. If you are unable to locate a copy, please contact 3Com and a copy will be sent to you.

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This equipment was tested and found to comply with the limits for a Class A digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case you must correct the interference at your own expense.

Canadian Emissions Requirements

This Class A digital apparatus meets all requirements of the Canadian Interference-Causing Equipment Regulations.

Cet appareil numérique de la classe A respecte toutes les exigences du Règlement sur le matériel brouilleur du Canada.

EMC Directive Compliance

This equipment was tested and conforms to the Council Directive 89/336/EEC for electromagnetic compatibility. Conformity with this directive is based upon compliance with the following harmonized standards:

EN 55022 – Limits and Methods of Measurement of Radio Interference EN 50082-1 – Electromagnetic Compatibility Generic Immunity Standard: Residential, Commercial, and

Light Industry Warning: This is a Class A product. In a domestic environment, this product may cause radio interference, in

which case you may be required to take adequate measures. Compliance with this directive depends on the use of shielded cables.

Low Voltage Directive Compliance

This equipment was tested and conforms to the Council Directive 72/23/EEC for safety of electrical equipment. Conformity with this directive is based upon compliance with the following harmonized standard:

EN 60950 – Safety of Information Technology Equipment

VCCI Class 1 Compliance

This equipment is in the 1st Class category (information equipment to be used in commercial or industrial areas) and conforms to the standards set by the Voluntary Control Council for Interference by Information Technology Equipment aimed at preventing radio interference in commercial or industrial areas.

Consequently, when the equipment is used in a residential area or in an adjacent area, radio interference may be caused to radio and TV receivers, and so on.

Read the instructions for correct handling.

Fiber Cable Classification Notice

Use this equipment only with fiber cable classified by Underwriters Laboratories as to fire and smoke characteristics in accordance with Section 770-2(b) and Section 725-2(b) of the National Electrical Code.

UK General Approval Statement

The CoreBuilder 5000 Integrated System Hub and ONline System Concentrator are manufactured to the International Safety Standard EN 60950 and are approved in the U.K. under the General Approval Number NS/G/12345/J/100003 for indirect connection to the public telecommunication network.

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Guide written by Jackie Bonin, edited by Pamela Taylor, and produced by Tracey Taylor.

iii

ABOUT THIS GUIDE

Audience 1 How to Use This Guide 1 Conventions 2 Related Documents 3

3Com Documents 3 Reference Documents 4

1 INTRODUCTION

100BASE-TX Workgroup FastModule Description 1-1

12-Port 100BASE-TX Workgroup FastModule 1-2

100BASE-TX Workgroup FastModule Features 1-3

Managing 100BASE-TX Workgroup FastModules 1-4 Determining Model Number 1-4 100BASE-TX Workgroup FastModules 1-5

2 DESIGNING YOUR NETWORK

Implementing 100BASE-TX FastModules in the Network 2-1

Software Requirements 2-1 Network Configuration Rules 2-2

Before Configuring Your Network 2-2 Basic Network Rules 2-3 Network Backplane Restrictions 2-3

Using Module Workgroups 2-4

Workgroup Definition 2-4

Setting Redundant Links 2-5

Setting Redundancy Between Two Ports on One FastModule 2-5

Setting Redundancy Between Ports on Two FastModules 2-5 Making Network Connections 2-7 Sample 100BASE-TX Workgroup FastModule Configuration 2-7

3 INSTALLING THE MODULE

Precautionary Procedures 3-1 Unpacking Procedures 3-2 Quick Installation 3-3 Setting DIP Switches 3-4

DIP Switch Features 3-4 Setting the DIP Switches 3-4 DIP Switch Definition 3-5

Default DIP Switch Settings 3-6

Installing the Module 3-7

4 CONFIGURING THE MODULE

Configuring the Module 4-1

Configuration Overview 4-2 Set Port Mode Commands 4-2

Enable/Disable/Shutdown Ports Command 4-3 Setting Port Redundancy Command 4-3 Setting Remote Diagnostics Command 4-3 Set Port Alert Filter Command 4-4 Network Selection 4-5

Showing Module Configurations 4-6

Show Module Command 4-6 Show Port Command 4-6

Gathering Repeater Statistics 4-7

Statistics-Gathering Process 4-7

Monitor Command 4-8 Gathering Repeater Statistics Through SNMP 4-11 Show Counter Command 4-12

Monitoring the Front Panel 4-14

Module Status LED 4-14 Port Status and Activity LEDs 4-14

Verifying LED and Network Operation 4-17

Using the CoreBuilder 5000 Controller Module to Verify Bi-color LED Operation 4-17

Using the DMM to Verify Network Connections 4-17

Verifying Network Connections for the 12-port 100BASE-TX

Workgroup FastModule 4-18

5 TROUBLESHOOTING

Troubleshooting Using the Module Status LED 5-1 Troubleshooting Using the Port Status LEDs 5-2 Obtaining Technical Assistance 5-3

A SPECIFICATIONS

Standard Protocol A-1 Cable Specifications A-1 Environmental Specifications A-2 Mechanical Specifications A-2 Power Specifications A-2 Regulatory Compliance A-3

B TECHNICAL SUPPORT

Online Technical Services B-1

World Wide Web Site B-2

3Com Bulletin Board Service B-2

Access by Analog Modem B-2

Access by Digital Modem B-2 3ComFacts Automated Fax Service B-3 3ComForum on CompuServe Online Service B-3

Support From Your Network Supplier B-4 Support From 3Com Corporation B-5 Returning Products for Repair B-6 Accessing the 3Com MIB B-6 Contacting 3Com Technical Publications B-7

INDEX

3COM CORPORATION LIMITED WARRANTY

vii

FIGURES

1-1 CoreBuilder 5000 12-Port 100BASE-TX Workgroup FastModule Front

Panel 1-2

2-1 Sample 100BASE-TX Workgroup FastModule Configuration 2-8 3-1 12-Port 100BASE-TX Workgroup FastModule DIP Switch Location 3-5 3-2 Installing a CoreBuilder 5000 Module 3-8 3-3 Opened and Closed Module Ejectors 3-9 4-1 12-Port 100BASE-TX Workgroup FastModule Faceplate 4-15

TABLES

1 How to Use This Guide 1 1-1 100BASE-TX Workgroup FastModule Features 1-3 1-2 100BASE-TX Workgroup FastModules 1-5 2-1 Fast Ethernet Channel Assignment Effect on Backplane Channels 2-4 2-2 Network Connections 2-7 3-1 Quick Installation Checklist 3-3 3-2 Network Selection DIP Switch Settings 3-6 4-1 Repeater Statistics Description 4-10 4-2 12-Port 100BASE-TX Workgroup FastModule LED Interpretations 4-16 5-1 Module Status LED Troubleshooting 5-1 5-2 Port Status LED Troubleshooting 5-2

A-1 Standard Supported Protocol A-1 A-2 Required Cable Type and Maximum Segment Length A-1 A-3 Environmental Specifications A-2 A-4 Mechanical Specifications A-2 A-5 Power Specifications A-2 A-6 Regulatory Certifications A-3

ABOUT THIS GUIDE

This guide explains how to install 3Com CoreBuilder 5000 12-Port 100BASE-TX Workgroup FastModules, manage100BASE-TX Workgroup FastModules using the 3Com Management Module, and monitor network traffic.

If the information in the release notes shipped with your product differs from the information in this guide, follow the release note instructions.

Audience This guide is intended for the following people at your site:

■ Network manager or administrator

■ Trained hardware installer or service personnel

CoreBuilder 5000 Distributed

How to Use This Guide

the following table shows the location of specific information.

Table 1 How to Use This Guide

If you are looking for: Turn to:

Information about 100BASE-TX Workgroup FastModule features and benefits.

Information about designing and expanding the network and using module workgroups.

Information about unpacking and installing the module. Chapter 3 Information about configuring the module. Chapter 4 Information about verifying LED and network operation. Chapter 4 Understanding and troubleshooting using front panel LEDs. Chapter 5 Specification for the 100BASE-TX Workgroup FastModule. Appendix A Information about getting technical support. Appendix B

Chapter 1

Chapter 2

2 ABOUT THIS GUIDE

Conventions The following tables list conventions used throughout this guide.

Icon Notice Type Alerts you to...

Information note Important features or instructions

Caution Risk of personal safety, system damage, or loss

of data

Warning Risk of severe personal injury

Convention Description

“Enter” vs. “Type” When the word “enter” is used in this guide, it means

type something, then press the Return or Enter key. Do not press the Return or Enter key when an instruction simply says “type.”

Text represented as

screen display

Text represented as

commands

Italics Italics are used to denote new terms or emphasis.

This ty peface is used to represent displays that appear on your terminal screen. For example:

Enter value in Hex:

This typeface is used to represent commands that you enter. For example:

show vbridg e 3 aft bri dge_port 6.all

INTRODUCTION

This chapter describes the 3Com CoreBuilder™ 5000 12-Port 100BASE-TX Workgroup FastModule (Model Number 3C96512M-TX). This chapter contains the following sections about the 12-Port 100BASE-TX Workgroup FastModule:

■ 100BASE-TX Workgroup FastModule Description

■ 100BASE-TX Workgroup FastModule Features

100BASE-TX Workgroup FastModule Description

The CoreBuilder 5000 100BASE-TX Workgroup FastModule is a high-speed module for the 3Com Hub.

The 100BASE-TX Workgroup FastModule provides:

■ Twelve shared 100BASE-TX-compliant ports using RJ-45 shielded

connectors supporting 100BASE-TX transmission over category 5 unshielded or shielded twisted-pair cabling.

Collectively, these ports form a single group that can be assigned to one of the 4 Fast Ethernet backplane channels or a single isolated channel.

■ Twelve bicolored LEDs and a module status LED on the front panel.

These LEDs provide status information for the module and each of the ports (Figure 1-1

CoreBuilder 5000 Integrated System

1-2 INTRODUCTION

12-Port 100BASE-TX

Workgroup

FastModule

Figure 1-1

illustrates the front panel of the 12-Port 100BASE-TX

Workgroup FastModule.

MOD STAT

1 4 7

Module status LED

Port status LEDs

RJ45 connectors (ports 1 to 4)

RJ45 connectors (ports 5 to 8)

10X

11X

12X

6512M-TX

RJ45 connectors (ports 9 to 12)

Figure 1-1 CoreBuilder 5000 12-Port 100BASE-TX Workgroup FastModule

Front Panel

100BASE-TX Workgroup FastModule Features 1-3

100BASE-TX Workgroup FastModule Features

Table 1-1 lists the CoreBuilder 5000 12-Port 100BASE-TX Workgroup

FastModule features.

Table 1-1 100BASE-TX Workgroup FastModule Features

Feature Description

Workgroup Fast Ethernet

Connectivity to Four Fast Ethernet Channels

Fault Tolerance Ensures maximum network availability with no single

Remote Diagnostics Checks driver and receiver integrity using Remote

Repeater Statistics Provides IEEE Repeater statistics-gathering for monitoring

Inventory Management

Power Management Supports CoreBuilder 5000 power management

Hot Swap Ability You can insert or remove 100BASE-TX Workgroup

In-band and Out-of-band Management

Provides high-density workgroup Ethernet FastModules for implementation of Fast Ethernet to the desktop. Workgroups help you achieve reduced traffic congestion and increased service levels on the existing network by implementing microsegmented Fast Ethernet.

Connects to each of the four Fast Ethernet channels located on the TriChannel CoreBuilder 5000 hub.

point of failure (redundant link).

Diagnostics mode. Setting a port to this mode allows the port to indicate a receive link error to the externally-connected port by not transmitting any link signals.

of CoreBuilder 5000 network management architecture. In addition, the 12-Port 10BASE-TX module supports

Repeater Management Information Base (MIB) statistics through the terminal without the need for a Network Monitor Card.

Maintains inventory information for the 12-Port 100BASE-TX module in non-volatile RAM (NVRAM). Information includes the module serial number, power requirements, power class settings (for example, power on priority), date of manufacture, and a user note pad for entering installation-specific information.

architecture which enables the hub to intelligently enable or disable modules depending on the available power in the system.

FastModules without powering off the CoreBuilder 5000 chassis.

Provides in-band SNMP and TELNET management through the 3Com CoreBuilder 5000 Distributed Management Module. Also provides out-of-band SLIP management.

backplane of the

1-4 INTRODUCTION

To access in-band management in a hub with all 100BASE-TX Workgroup FastModules, you must have another type of FastModule, SwitchModule, or 10BASE-T Ethernet module and network monitor card installed.

Managing

100BASE-TX

Workgroup

FastModules

Determining Model

Number

You can manage CoreBuilder 5000 100BASE-TX Workgroup FastModules using the DMM command line interface.

The DMM supports:

■ In-band management using SNMP (Simple Network Management

Protocol) or TELNET

■ Out-of-band management using SLIP (Serial Line Interface Protocol)

for TELNET and SNMP

You must use DMM software Version v4.1 or later to manage and configure the 12-Port 100BASE-TX Workgroup FastModules.

You need to determine your model number to:

■ Be able to perform configurations effectively

■ Identify your product for product orders or customer support

■ Make certain you have the correct model number

The model number on 100BASE-TX Workgroup FastModule faceplate may differ slightly from the model number registered in the DMM or Advanced DMM software. To determine your FastModule model number for product orders or customer support:

1 Use the model number registered in the DMM or Advanced DMM

software (to determine your software version).

2 Add the prefix 3C9 to the model number.

For example, use the number 3C96512M-TX for Model Number 6512M-TX.

To determine the 100BASE-TX Workgroup FastModule model number, enter the command SHOW MODULE ALL at the DMM prompt and use the model number listed in the Module field.

100BASE-TX Workgroup FastModule Features 1-5

100BASE-TX

Workgroup

FastModules

Table 1-2

Table 1-2 100BASE-TX Workgroup FastModules

Model Number Occupies Ports

3C96512M-TX (faceplate shows 6512M-TX)

describes the 100BASE-TX Workgroup FastModule.

1 slot 12 100BASE-TX ports with

RJ-45 shielded connectors

DESIGNING YOUR NETWORK

Implementing 100BASE-TX FastModules in the Network

Software

Requirements

This chapter describes how to configure networks that use the CoreBuilder Workgroup FastModules.

This chapter contains the following sections:

■ Implementing 100BASE-TX FastModules in the Network

■ Using Module Workgroups

■ Setting Redundant Links

■ Making Network Connections

■ Sample 100BASE-TX Workgroup FastModule Configuration

This section describes the following topics:

■ Software Requirements

■ Network Configuration Rules

This chapter describes how to use the CoreBuilder 5000 hub with the 12-Port 100BASE-TX Workgroup FastModule.

You must have the 3Com Module (DMM) and the advanced DMM/Controller module software Version v4.1 or later to manage and configure 12-Port 100BASE-TX Workgroup FastModules.

™

5000 hub and CoreBuilder 5000 12-Port 100BASE-TX

CoreBuilder 5000 Distributed Management

2-2 DESIGNING YOUR NETWORK

Network

Configuration Rules

This section describes general rules for configuring a Fast Ethernet network using twisted pair as the horizontal medium (connection to printers, computers). It also provides rules to ensure that your network configuration conforms to distance limitations imposed by Ethernet and networking equipment.

The following topics are discussed:

■ Before Configuring Your Network

■ Basic Network Rules

■ Network Backplane Restrictions

Before Configuring Your Network

Before you configure your network, consider your:

■ Plans for expansion – If the network expands beyond a certain

size, you may need to add additional internetworking devices.

■ Maximum cable length – Cabling requirements include:

■ 100 Ohm 2-pair Category 5 UTP for up to 100 meters (328 feet)

■ 100 Ohm STP for up to 100 meters (328 feet)

■ Management access – For in-band management through the

DMM, SNMP and TELNET require another type of Downlink Fastmodule, SwitchModule, or 10BASE-T Ethernet module and network monitor card installed in the hub.

Out-of-band management requires Serial Line Interface Protocol (SLIP) (includes SNMP, TELNET) and Direct Asynchronous terminals.

Implementing 100BASE-TX FastModules in the Network 2-3

Basic Network Rules

This section lists basic network rules for constructing your network using Fast Ethernet:

For hardware-specific information on the 100BASE-TX Workgroup FastModule, refer to Appendix A, Specifications

■ The 100BASE-TX Workgroup FastModules are a Class 1 repeater. A

Class 1 repeater has an internal delay that functions as follows:

■ Only one repeater can exist between any two DTE devices within

a single collision domain when you use two maximum cable length segments.

■ An internal delay is the time delay between the system’s sensing

of the first data bit received and the sensing of the first data bit transmitted on a 100 Mbps network.

Multiple 100BASE-TX Workgroup FastModules on the same network (single backplane channel) makes 1 repeater.

■ The maximum UTP cable length between hub and connected

workstations is 100 meters (328 feet).

■ Use 2-pair Category 5 UTP or STP cable for backbone connections.

Backbone cabling is the main transmission medium used to interconnect workgroups on a network.

■ Use with other switching FastModules except when other switching

FastModules are configured with VLANS (for detailed information on switching fast modules, refer to the CoreBuilder 5000 FastModule User Guide).

Network Backplane Restrictions

The CoreBuilder 5000 hub has capacity for four Fast Ethernet channels (FastChannels). When you use assign a FastModule backplane port to a CoreBuilder 5000 FastChannel, one or more backplane channels become unavailable for use.

2-4 DESIGNING YOUR NETWORK

Table 2-1 lists the backplane channels that become unavailable for each

Fast Ethernet Channel assignment.

Table 2-1 Fast Ethernet Channel Assignment Effect on Backplane Channels

Using Module Workgroups

Workgroup

Definition

Assigning a Backplane Port to FastChannel

1 2 7, 8, and 9 4 and 5

2 1 and 2 5, 6, 10, and 11 3 and 6

3 1 1, 2, 3, and 4 1 and 2

4 3 13, 14, 15 7 and 8

Disables Ethernet Channel

Disables Token Ring Channel

Disables FDDI Channel

When you set up a 12-Port 100BASE-TX FastModule as a fully-configured workgroup module, the resultant logical network configuration supports one workgroup per module. Because a managed CoreBuilder 5000 hub may contain as many as seventeen 12-Port 100BASE-TX FastModules, it is possible to configure your hub with a maximum of 17 workgroups or a maximum of 204 ports in a single workgroup.

Workgroups are individual groups on modules set up to divide your network layout into smaller isolated networks. The CoreBuilder 5000 100BASE-TX Workgroup FastModule is a Fast Ethernet module that enables administrators to connect up to 12 network devices. You can attach workstations to the 12-Port 100BASE-TX Workgroup FastModule using RJ-45 connectors directly to the front of the module.

Workgroups:

■ Provide network administrators with high flexibility in organizing

their network.

■ Decrease the amount of traffic on the backplane segments of the

hubs in which the workgroups reside.

■ By creating module workgroup networks instead of separate

backplane segment networks, you can configure a maximum of 17 workgroups per hub using no backplane bandwidth.

Setting Redundant Links 2-5

Setting Redundant Links

Setting Redundancy

Between Two Ports

on One FastModule

Setting Redundancy

Between Ports on

Two FastModules

When you set up a redundant link between ports on CoreBuilder 5000 hubs, the resultant configuration prevents a network failure. This section describes how to set up redundancy between:

■ Two ports on one 100BASE-TX Workgroup FastModule

■ Two ports on two separate 100BASE-TX Workgroup FastModule

To connect two links to two ports on one 12-Port 100BASE-TX FastModule:

1 Issue the SET PORT MODE REDUNDANT network management

command.

2 Specify the primary link port and the backup link port.

For example, if you set up a redundant link using the following command:

SET POR T 8.5 MODE REDUNDANT 8.7

Port 5 in slot 8 becomes the primary link and port 7 in slot 8 becomes the backup link.

To connect two links to two ports between two 12-Port 100BASE-TX FastModules:

1 Issue the SET PORT MODE REDUNDANT network management

command.

2 Specify the primary link port and the backup link port.

For example, if you set up a redundant link using the following command:

SET PORT 12.4 MODE REDUNDANT 8.9

Port 4 in slot 12 becomes the primary link and port 9 in slot 8 becomes the backup link.

CAUTION: You can set redundancy between a port on the 100BASE-TX Workgroup FastModule and a port on any 10 MB module. However, you should set the 100 MB port as the primary port and the redundant or buddy port as the backup port.

2-6 DESIGNING YOUR NETWORK

After you configure redundancy:

1 A switchover to the backup link occurs under three conditions:

■ Link failure

■ Port partition

■ Link unstable (carrier integrity failure, port isolated)

2 The switchover occurs and the backup link becomes operational. The

system performs a switchover back to the primary link automatically after the failure or port partition problem is resolved.

Although you can configure redundancy between two ports on a single module, you should configure redundancy between two ports on two different modules. This provides additional protection if, for example, one of the modules becomes inoperative.

If redundant front panel ports are set up from a Workgroup FastModule to a single switching FastModule, then configure the single switching FastModule using resilient link (

of a main link and a standby link

FastModule to Remote Diagnostic mode. This sets up the remote fault tolerance feature.

a resilient link consists

) and set the port on the Workgroup

Refer to the CoreBuilder 5000 Distributed Management Module User Guide for more information on setting redundancy between ports and

refer to the CoreBuilder 5000 FastModule User Guide for detailed information on switching FastModules.

Making Network Connections 2-7

Making Network Connections

Table 2-2 summarizes the possible schemes for connecting

100BASE-TX Workgroup FastModules in your network.

Table 2-2 Network Connections

To connect a hub to a

Node RJ-45 port Straight-through

Hub 100BASE-TX

Use this type of connector

100BASE-TX Straight-through

Switch FastModule using RJ-45 connectors

...And this type of cabling Purpose

UTP

Category 5 crossover UTP cable

Connects PCs, servers, and other network devices directly connected to the hub.

Connects another hub.

When you make this connection, you must connect to the front panel TX port on a 7-port 100BASE-FX/TX FastModule.

Sample 100BASE-TX Workgroup FastModule Configuration

The maximum allowable distance between the hub and a PC, server, or other devices is 100 meters of Category 5 UTP cable. The UTP cable used for hub-to-node connections is a straight-through connection. No crossovers should be present.

Figure 2-1 shows a sample network configuration that implements

100BASE-TX Workgroup FastModules and CoreBuilder 5000 Switching FastModules in the CoreBuilder 5000 hub.

A typical configuration for the 100BASE-TX Workgroup FastModule is when you have a CoreBuilder 5000 7-slot hub running several 12-port 100BASE-TX Workgroup FastModules with a 100BASE-TX/FX FastModule for a Fast Ethernet downlink connection over the backplane.

2-8 DESIGNING YOUR NETWORK

The 7-port 100BASE-FX/TX FastModule provides seven switched Fast Ethernet connections to any one of four CoreBuilder 5000 FastChannel backplane networks. When used in conjunction with other CoreBuilder 5000 FastModules, this FastModule lets you create backbone and floor configurations based on shared and switched Fast Ethernet and Ethernet. The 100BASE-TX ports on the 7-port FastModule using RJ-45 connectors can be used to provide dedicated 100 Mbps connections to workgroup servers

Users are connected to each of the 12 ports on the 100BASE-TX Workgroup FastModule distributed among the four Fast Ethernet channels. These channels are aggregated and downlinked through the switching 100BASE-TX/FX FastModule in the CoreBuilder 5000 hub.

For more information on switching fast modules, refer to the CoreBuilder 5000 FastModule User Guide.

Server

CoreBuilder 5000 Integrated System Hub

100 Mbps (connection over the backplane)

7-port 100BASE-FX/TX Switched FastModule

100 Mbps

Figure 2-1 Sample 100BASE-TX Workgroup FastModule Configuration

Server

100 Mbps

12-port 100BASE-TX Workgroup FastModules

Server

INSTALLING THE MODULE

This chapter describes how to install the CoreBuilder™ 5000 12-Port 100BASE-TX Workgroup FastModule.

A quick start and reference guide for the 3Com® 12-Port 100BASE-TX Workgroup FastModule lists LED indicators, installation information, and other module information.

This chapter contains the following sections:

■ Precautionary Procedures

■ Unpacking Procedures

■ Quick Installation

■ Setting DIP Switches

■ Installing the Module

Precautionary Procedures

Read the precautionary procedures before unpacking the module.

CAUTION: Electrostatic discharge (ESD) can damage static-sensitive devices on circuit boards.

Follow these precautions when you handle the 12-Port 100BASE-TX Workgroup FastModule:

■ Do not remove the board from its antistatic shielding bag until you

are ready to inspect or install it.

■ Handle the board by the faceplate only.

3-2 INSTALLING THE MODULE

Use one of the following proper grounding techniques when you install the 12-Port 100BASE-TX Workgroup FastModule:

■ Use a foot strap and grounded mat or wear a grounded static

discharge wrist strap.

■ Touch the grounded rack or other source of ground just before you

handle the module and I/O cards.

CAUTION: Although the LEDs used in this product meet the regulatory requirements for casual exposure to the eye, as with any source of bright light, it is advised that one does not look into the light source.

Unpacking Procedures

To unpack the 12-Port 100BASE-TX Workgroup FastModule:

1 Verify that the 12-Port 100BASE-TX Workgroup FastModule (Model

Number 6512M-TX) is the model you ordered by checking the model number listed on the side of the shipping carton.

2 Note that the product model number printed on the shipping box

differs from the model number on the product. The model number on the shipping box contains the prefix ’3C9’.

3 Remove the 12-Port 100BASE-TX Workgroup FastModule, in its

antistatic bag, from the shipping carton.

4 Remove the module from the antistatic shielding bag and inspect it for

damage. Always handle the 12-Port 100BASE-TX Workgroup FastModule by the

faceplate, being careful not to touch the components. If the module appears to be damaged, return it to the antistatic shielding bag, repack it in the shipping carton, and contact your local supplier.

Keep the shipping carton and antistatic shielding bag in which your module was shipped for future storage or shipment.

5 Record the serial number of your 12-Port 100BASE-TX Workgroup

FastModule. The Hub Planning Chart, located in the CoreBuilder 5000 reference binder, and the Module Planning Chart supplied with your module are provided for this purpose.

Quick Installation 3-3

Quick Installation Table 3-1 outlines the steps for the installation of your module. If you

are familiar with installing CoreBuilder 5000 modules, use this table as a checklist. Otherwise, consult the remainder of this chapter.

Table 3-1 Quick Installation Checklist

Step Procedure Chapter/Section 1 Verify that your network complies with the

basic rules for network design.

2 Unpack the module. Chapter 3, Unpacking

3 Configure the DIP switch settings. If you

have a network management module installed in the hub, configure the module using the management commands described later in this chapter.

4 Enter the SHOW POWER1 command at the

5 Insert a 12-Port 100BASE-TX Workgroup

6 Establish connections from the 12-port

7 Verify LED status for normal operation. Chapter 4, Verifying

Refer to the CoreBuilder 5000 Integrated System Hub Installation and Operation Guide for

details on hub power requirements.

command line of the terminal. This command displays current power requirements for the hub.

Fastmodule into one open slot in the hub. Fasten the ejectors and tighten the faceplate screws.

100BASE-TX Workgroup Fastmodule to devices using the appropriate connectors and cabling.

Chapter 2, Designing

Your Network

Procedures

Chapter 3, Setting DIP

Switches

Chapter 3, Installing

the Module

Chapter 3, Installing

the Module

Chapter 3, Installing

the Module

LED and Network Operation

For information about potential problems, consult the troubleshooting techniques in Chapter 5

3-4 INSTALLING THE MODULE

Setting DIP Switches

If you are using a management module and do not plan to use the DIP configuration command, skip this section and go to the section

Installing the Module

The CoreBuilder 5000 Ethernet 12-Port 100BASE-TX Workgroup FastModule has an 8-position DIP switch. All of the DIP switch settings on the 12-Port 100BASE-TX Workgroup FastModule are ignored if an appropriate CoreBuilder 5000 network management module (for example, DMM Version v4.10 or later) is already installed in the hub. Use network management commands, rather than the DIP switches, to configure the module.

This section describes:

■ DIP Switch Features

■ Setting the DIP Switches

■ DIP Switch Definition

DIP Switch Features Use the DIP switch to:

■ Select a network for all ports on the 12-port 100BASE-TX

Workgroup FastModule

■ Choose the primary module configuration:

in this chapter.

Setting the DIP

Switches

■ Non-volatile RAM configuration (software configuration)

■ DIP segment selection (DIP-specified module configuration)

To set the module to access the DIP switch settings when using a management module, issue the

SET DEVICE DIP_CONFIGURATION

command from the management module.

If you do not have a CoreBuilder 5000 Distributed Management Module installed in your hub, your hub configuration defaults to the DIP switch settings on the module.

Setting DIP Switches 3-5

Figure 3-1 shows the DIP switch location on the module.

4 56

DIP switch

TX ports (RJ-45)

NOT USED NOT USED

NOT USED

ISOLATE

NOT USED

CH SEL 1 CH SEL 0

12345678

96-pin backplane connector

Figure 3-1 12-Port 100BASE-TX Workgroup FastModule DIP Switch Location

DIP Switch Definition The DIP switch settings on the module refer to the backplane

connection as the channel selection (CH SEL). The channel setting and the network setting are the same.

Use the DIP switch settings on the 12-Port 100BASE-TX Workgroup FastModule to assign the module to network one through four or to the isolated segment.

Table 3-2

■ Switches 1 and 2 – Enable you to configure all ports to one of the

describes the following DIP switch settings:

Fast Ethernet backplane segments (Fast Ethernet 1 to Fast Ethernet 4).

■ Switch 3 – No operation.

■ Switch 4 – Enables you to configure all ports to one Isolate

segment.

3-6 INSTALLING THE MODULE

■ Switch 5 – Enables you to switch between non-volatile RAM

(NVRAM) or DIP-switch controlled configuration.

■ Switches 6, 7, and 8 – Not used.

Table 3-2 Network Selection DIP Switch Settings

Switch

Network Selection

1 (default) Off Off Off 2 Off Off On 3 Off On Off 4 Off On On Isolated On N/A N/A

By default, Switch 5 is set to NVRAM. When enabled, settings stored in

NVRAM take precedence over DIP Switch settings 1 through 3.

Settings

Switch 4 Switch 2 Switch 1

The DIP switch legend (Figure 3-1

) on the module refers to the backplane connection as the channel selection (CH SEL). The channel setting and the network setting are the same. Ports set to the same network communicate with each other. If the switch labeled ISOLATE is On, it sets the module to Isolated.

Default DIP Switch Settings

When the 12-Port 100BASE-TX Workgroup FastModule is first installed, the hub checks for DIP witch configuration settings in the DMM and decides the following:

■ If the hub is managed, the module uses the DIP switch settings from

the DMM.

■ If the hub is unmanaged, then the 12-Port 100BASE-TX Workgroup

FastModule:

a Checks for configuration settings stored in NVRAM. b Checks the DIP switches for configuration information if there are

no configuration settings in NVRAM or DIP Switch is set to DIP-switch controlled configuration.

Installing the Module 3-7

Installing the Module

You do not need to power off the CoreBuilder 5000 hub to install or remove the 12-Port 100BASE-TX Workgroup FastModule. You can insert the module while the hub is operating (this is called a hot swap).

To install a 12-Port 100BASE-TX Workgroup FastModule into the hub:

1 Use one of the following proper grounding techniques when you install

the 12-Port 100BASE-TX Workgroup FastModule: a Properly ground yourself prior to handling the 12-Port 100BASE-TX

Workgroup FastModule.

b Attach a static wrist guard to yourself or touch a grounded static

mat prior to handling the 12-Port 100BASE-TX Workgroup FastModule.

2 Configure the 12-Port 100BASE-TX Workgroup FastModule:

a If you plan to install the 12-Port 100BASE-TX Workgroup

FastModule in a managed hub (for example, DMM Version v4.10), go to step 3 to complete the installation. To configure the appropriate settings, refer to the section Configuring the Module later in Chapter 4.

b If you plan to insert the 12-Port 100BASE-TX Workgroup

FastModule in an unmanaged hub, configure the DIP switch settings on the module to the desired settings (refer to the section Setting

DIP Switches earlier in this chapter) and go to step 4.

3 To determine if the hub has enough power for the new module, from

the DMM command line, enter the SHOW POWER BUDGET command. Refer to Appendix A, Specifications for each of the specified watts ranges.

Refer to the CoreBuilder 5000 Distributed Management Module Commands Guide for information on the SHOW POWER BUDGET command.

4 Locate an open slot in the hub. Remove the appropriate number of

blank panels on the hub to expose a slot for the module, if necessary.

, for details on power requirements

3-8 INSTALLING THE MODULE

Figure 3-2 shows the installation of a CoreBuilder 5000 module (The

module in the diagram is only a representation of a CoreBuilder 5000 module, not the 100BASE-TX module).

Figure 3-2 Installing a CoreBuilder 5000 Module

5 Insert the module into the board guides at the top and bottom of the

slot and slide it into the hub by pressing firmly at the top and bottom of the faceplate.

Installing the Module 3-9

6 Close the 12-Port 100BASE-TX Workgroup FastModule ejectors

(Figure 3-3

Opened ejector

Figure 3-3 Opened and Closed Module Ejectors

Closed ejector

7 Using your fingers, fasten the spring-loaded screws on the front of the

12-Port 100BASE-TX Workgroup FastModule faceplate to the hub (do not overtighten).

8 Attach the RJ-45 cable connectors to the RJ-45 connectors on the front

of the module.

CONFIGURING THE MODULE

Configuring the Module

This chapter describes how to configure the 3Com CoreBuilder

A quick start and reference guide for the 12-Port 100BASE-TX Workgroup FastModule lists the LED indicators and other module information.

This chapter contains the following sections:

■ Configuring the Module

■ Showing Module Configurations

■ Gathering Repeater Statistics

■ Monitoring the Front Panel

■ Verifying LED and Network Operation

This section describes how to configure the module using network management commands. The following network management commands are used to configure the 12-Port 100BASE-TX Workgroup FastModule:

■ Set port mode commands

™

5000 12-Port 100BASE-TX Workgroup FastModule.

■ Set port alert filter command

■ Select the Fast Ethernet network on the module

For additional information on network management commands, refer to the CoreBuilder 5000 Distributed Management Module Commands

Guide.

4-2 CONFIGURING THE MODULE

Configuration

Overview

The CoreBuilder 5000 Distributed Management Module (DMM) and the Advanced DMM/Controller Module provide network management for the CoreBuilder 5000 hub and its modules. Use network management commands, rather than the DIP switches, to configure the module. All of the DIP switch settings on the 12-Port 100BASE-TX Workgroup FastModule are ignored if an appropriate CoreBuilder 5000 Distributed Management Module (DMM Version v4.10 or later) is already installed in the hub.

If network management is present when you first install the module, the:

■ Network defaults to isolated mode.

■ Ports are automatically disabled (so that users cannot join the

network undetected by network management).

Therefore, you must enable the ports you want to use and set the module ports to the appropriate network using management commands.

Do not manage (get statistics or configure) this module from a slave management module.

Set Port Mode

Commands

To enable ports and set the module ports to the appropriate network, use the following SET PORT MODE commands:

■ Enable/Disable/Shutdown Ports Command

■ Setting Port Redundancy Command

■ Setting Remote Diagnostics Command

■ Set Port Alert Filter Command

■ Network Selection

Configuring the Module 4-3

Enable/Disable/Shutdown Ports Command

This command allows you to enable, disable, and shutdown each port on the 12-Port 100BASE-TX Workgroup FastModule.

When a port is set to:

■ Enable – It transmits to and receives data from the network to

which the port is assigned.

■ Disable – It does not transmit or receive data. (Link integrity is

unaffected).

■ Shutdown – It is disabled, turns off link integrity, and does not

transmit or receive data. The port responds with status OFF at the terminal.

Use the following command to enable, disable, or shutdown a port:

SET PORT {

slot.port

{

slot

} MODE {disable}

.all} {enable}

{shu tdow n}

Setting Port Redundancy Command

This command allows you to set redundancy between ports. When you set two ports redundant to each other, the secondary port takes over if the primary port fails.

To support 100BASE-TX Fast Ethernet features, you may use either another 100 MB port or another 10BASE-T port as the backup.

Use the following command to set redundancy between ports:

SET PORT {

slot .por t

{

slot .por t

} MODE {redundant} } {non- re dund an t}

For an example of port redundancy, refer to the section Setting Redundant Links in Chapter 2.

Setting Remote Diagnostics Command

This command allows the 12-Port 100BASE-TX Workgroup FastModule to detect certain unusual failure conditions. This mode completes the fault-tolerance of a redundant link.

4-4 CONFIGURING THE MODULE

Use the following command to set remote diagnostics:

SET PORT {slot.

{slo t.po rt } {NON _R EMOT E_ DI AGNOS TI CS}

port

} MODE {REMOTE_DIAGNOSTICS}

In the command above, the last variable, slot.port, is optional. If entered, both ports are placed into remote diagnostic mode and referred to as buddy ports to each other. If you turn one port off (place in non-remote diagnostic mode) then the other port is also turned off.

Set Port Alert Filter Command

This command allows you to override the Port Alert Filter feature on a port-by-port basis. The Port Alert Filter feature enables or disables the DMM delivery of port up and port down traps. You can use this command to continue to monitor port status on crucial ports (file servers, for example), while alerts from other ports are disabled.

Configure Alert Filter to:

■ Enable – To use the Port Alert filtering feature.

■ Disable – To allow all port up and port down alerts to display.

Use the following command to enable or disable the port up and port down alerts for a port:

SET PORT{

slot .por t

{

slot.

all} {enabl e}

} ALE RT_ FILT ER { disa bl e}

The following output is an example of the SET PORT ALERT_FILTER command issued for port 1 of a 12-port module in slot 1:

CB50 00> set po rt 1.1 aler t_filter di sable Port 01 .01 Alert Filter set to DISABLE

Perform the SET ALERT PORT_UP_DOWN FILTER command on the DMM before you use the SET PORT ALERT_FILTER command on the module.

For more information on this command, refer to the CoreBuilder 5000 Distributed Management Module Commands Guide.

Configuring the Module 4-5

Network Selection

This command provides module-level configuration flexibility using the unique architecture of the CoreBuilder 5000 hub. You can assign the module to:

■ Any of four Fast Ethernet backplane segments

■ An Isolated segment

Use the DIP switch settings on the 12-Port 100BASE-TX Workgroup FastModule to assign the module to network one through four or to the isolated segment. Network management, also lets you assign the module to a network.

Use the following command to assign the module to a network:

SET MO DUL E {

slot

.1} NETWORK {fast_ether_1..._4}

{isolated}

This command also assigns users to a backplane segment or the isolated segment.

The 100BASE-TX Workgroup FastModule cannot be connected to a Fast Ethernet channel that has a Virtual LAN trunk (VLT) configured from a switching FastModule. An error condition occurs. The following error message displays:

Virtua l LAN Trunk Module has been E nabled fo r this Networ k by other module(s) co nfigured to this Ne twork; comman d aborted

For example, do not configure a switched FastModule with VLT mode disabled to a network (Fast Ethernet 1) which is already configured with VLT mode enabled.

4-6 CONFIGURING THE MODULE

Showing Module Configurations

Show Module

Command

You can display status information about the 12-Port 100BASE-TX Workgroup FastModule using the following network management commands:

■ SHOW MODULE

■ SHOW PORT

This command enables users to display both brief and verbose information about a particular module.

Use the following command to display module information:

SHOW MODULE {

slot.

1} {verbose}

{no_ve rb ose }

The following output is an example of the SHOW MODULE VERBOSE command issued for a 12-Port 100BASE-TX Workgroup FastModule installed in slot 10:

CB50 00> show m odule 10.1 verbose

Slot Module Version N etwork Gen eral Info rmation

------ --------- -------- --------------- ------

10.01 6512M -TX‘v1.00 FAST_ETH ER_1 Port( s) are down

6512M- TX: FastMo dule 100B ASE-TX 12Por t Shared F ast Etherne t

Boot Ve rsion: v1.00 Networ k DIP Setti ng: FAST_E THER_1 Non-Volatile DIP Setting: DISABLED

Show Port Command This command enables users to display brief and verbose information

on both individual ports and all ports collectively.

Use the following command to display port information:

SHOW PORT {

slot.port

{

slot.

all} { no _verb os e}

} {ve rbo se}

Gathering Repeater Statistics 4-7

The following output is an example of the SHOW PORT VERBOSE command issued for port 2 on a 12-Port 100BASE-TX Workgroup FastModule installed in slot 10:

CB50 00> sho w port 10.2 verbose

Port Di splay for Module 6512M -TX:

Port Mo de Status Network General Informat ion

----- ----- --- ------ ---- ---- --------- --- ------- ------

10.02 E NABLED OKAY FAST_E THER_1

Alert Filter: DISABLED Port Co nnector: RJ-45

Gathering Repeater Statistics

Statistics-Gathering

Process

This section describes how the 12-Port 100BASE-TX Workgroup FastModule:

■ Gathers repeater statistics

■ Monitors network statistics

The 12-Port 100BASE-TX Workgroup FastModule gathers repeater statistics for each port (for example, collision, partition, late events, data rate mismatch, and short event statistics). This module gathers repeater statistics without the use of a network monitor card.

Repeater statistics are gathered from traffic only entering through the front panel ports on the 100BASE-TX Workgroup FastModule. The only statistics counted are those received on the front panel ports.

The repeater statistics that are available include:

■ Network – Network statistics are presented by gathering events

from all ports on the 12-Port 100BASE-TX Workgroup FastModules specified on the network. Network statistics are the total amount of all of the module statistics together.

■ Module – Module statistics represent the total events from traffic

entering on all ports on a specified module.

■ Port – Per-port statistics are a count of events from traffic entering

the specified port.

4-8 CONFIGURING THE MODULE

Monitor Command

This Monitor command:

■ Allows you to monitor each network (individually) by specifying the

backplane or isolated segment to which the module is configured.

■ Supports repeater statistics at the module (group) and port levels.

You cannot enter DMM commands while in Monitor mode.

Use the following command to monitor repeater statistics:

MONITO R {mm:ss} {RE PEATER} { fast_eth erne t_1..._4, isolated}

{module} { {port} {

slot slot

} .port}

The system-specified range of time for the polling interval is 00 to 30 minutes (mm) and 05 to 59 seconds (ss). Use these ranges when specifying a length of time between monitor display updates.

You must set a polling interval for the Monitor command. The polling interval defines the time between monitor display updates. The monitor displays the statistics for the last polling interval and a cumulative count (initialized to all zeros at the start of the monitor display). The Monitor command normalizes the repeater statistics from the values when invoked and when ever a counter rolls over or reaches maximum count.

The following output is an example of the MONITOR REPEATER command for a 12-Port 100BASE-TX Workgroup FastModule assigned to network Fast_Ethernet_1.

Gathering Repeater Statistics 4-9

This example monitors Fast_Ethernet_1 every 10 seconds:

CB50 00> m onitor 00:10 repeater fast_eth er_1

Repeater Statistics for FAST_ETHER_1

---------------------------------------------------------

------ --------- ----------------------- --------- ----------Transmit Collisions 0 0 Readable Frames 51857 28255 Readable Octets 53308996 29046140 Upper 3 2 Readable Octets 142 1 Runts 0 0 FCS Err ors 0 0 Late Events 0 0 Short Event s 0 0 Frame Too Lo ng 0 0 Very Long Ev ents 0 0 Alignm ent Errors 0 0 Collisions 0 0 Data Ra te Mismatc hes 0 0 Auto Pa rtition Co unt 0 0 Isolates 0 0 Symbol Erro rs 0 0 Last Source Address N/A 08-01 -20-21-3d -52 Display wil l refresh e very 10 seconds. Press C TRL-C to exit.

Cumula tive Last T ime Interval

In the previous example, the Upper 32 Readable Octets display 140. (The actual count of octets is 142 x (times) 2

100BASE-TX Workgroup FastModule Version v1.10 and DMM Version v5.0 support three new 100MB repeater statistics (Upper 32 Readable Octets, number of Isolates, and Symbol Errors) using the SHOW COUNTER command and the MONITOR command. 100BASE-TX Workgroup FastModule Version v1.10 works with DMM Version v4.10. However, DMM Version v5.0 is required to display the three new repeater statistic entries.

If you are using DMM Version v5.0, you must use 100BASE-TX Workgroup FastModule Version v1.10 to properly display any statistics.

Transmit collisions only display on a network level (not port or module level). Transmit collisions statistics are not supported by this module.

Status on the module has a periodic rate of gathering statistics and updating approximately every second.

4-10 CONFIGURING THE MODULE

Table 4-1 describes repeater statics.

Table 4-1 Repeater Statistics Description

Field Description

Readable Frames Readable (uncorrupted) frames received at repeater. Readable Octets Readable (uncorrupted) octets received at repeater (the

lower 32 bits of a 64-bit readable octets counter.

Upper 32 Readable Octets

Runts Packets less than 64 bytes. FCS Errors Frame Check Sequence errors. Late Events Collision detected after 512 bits were received from a

Short Events Packets less than 80 bit times received. Frame Too Longs Frames in excess of 1518 bytes received. Very Long Events Port entered a jabber lockup state due to a timeout. Alignment Errors Number of CRC errors that do not end on a byte

Collisions Total number of collisions detected. Data Rate Mismatches Number of FIFO overflow and underflow occurrences. Autopartition Count Number of times autopartition threshold has been

Isolates The number of automatic repeater port isolates as a

Symbol Errors Number of packets containing symbol errors. Last Source Address

(port)

The upper readable (uncorrupted) octets (2**32) received at repeater. It contains the upper 32 bits of a 64-bit readable octets counter.

port.

boundary.

passed.

consequence of false carrier events.

The source address of the last packet received by this port.

Gathering Repeater Statistics 4-11

Gathering Repeater Statistics Through SNMP

In addition to using DMM commands to gather information about network traffic, you can submit SNMP (Simple Network Management Protocol) requests for MIB objects that provide specific network management information (displays repeater port statistics defined in the MIB RFC 2108).

You can also submit SNMP requests through 3Com network management applications such as Transcend LANsentry. (Transcend uses SNMP to retrieve statistics, monitor the networks, and manage modules and hubs.)

An SNMP agent resides on the Advanced/DMM Controller Module, so anyone that has access to a community (set up on the Advanced/DMM agent) can use SNMP commands to read and set MIB variables (Transcend is not required).

The following is an example of a SNMP GET command of the ReadableOctets and Upper32Octets counters from port 1 of a 100 MB Repeater (100BASE-TX Workgroup FastModule) module occupying slot 4 and set to fast_ethernet_1. This example uses the public community. To use SNMP, you must have access to the community and use the community name extension to indicate the network from which to gather statistics from.

The community table is managed on the Advanced/DMM Controller Module.

CB50 00> getone 151.104. 2.41 publ ic@fast_e thernet_ 1 rptrMo nitorPort Readable Octets.4.1

Repeater Statistics for FAST_ETHER_1

----------------------------------------------------------Name: rptrMonitorPortReadableOctets.4.1 Value: 374233968

CB5000> get one 151.104.2.41 publ ic@fast_e thernet_ 1

rptrMo nitorPort Upper32O ctets.4.1

Repeater Statistics for FAST_ETHER_1

----------------------------------------------------------Name: rptrMonitorPortUpper32Octets.4.1 Value: 3

4-12 CONFIGURING THE MODULE

SHOW COUNTER REPEATER {fast_ethernet_1..._4, isolated} {mod ule} {slot}

Show Counter Command

This command provides you with detailed information on repeater statistics at the time you enter the command.

Use the following command to view repeater statistics:

SHOW COUNTE R REPE ATER {fast_ et her net_ 1. .._4 }

{iso late d}

Use the following command to view statistics on an isolated network:

SHOW COUNTE R R EPEA TE R {is ol ated } {mod ule}

Use the following command to show network, module, and port-level repeater statistics:

{port} {slot. port}

Both the MONITOR and SHOW COUNTER commands provide information for ongoing network statistics. The MONITOR command displays network statistics periodically at the time interval you specify in the command. The SHOW COUNTER command displays repeater statistics, at one time, since the last CLEAR COUNTER command.

Gathering Repeater Statistics 4-13

The following output is an example of the SHOW COUNTER command listing REPEATER statistics:

CB50 00> show counter repeater fast_ethernet_1 module 3

Repeat er Statist ics for Modu le 3 on FAS T_ETHER_1

------ --------- -------- ----------- --------- -------- -------Readable Frames 0 Readab le Octets 68900 0 Upper 32 Rea dable Octe ts 142 Runts 0 FCS Err ors 0 Late Events 0 Short Event s 0 Frames too L ong 0 Very Long Ev ents 0 Alignm ent Errors 0 Collis ions 0 Data Ra te Mismatc hes 0 Auto Pa rtition Co unt 0 Isolates 0 Symbol Erro rs 0 Transmit Collisions (display at the module level only)

Choose the CLEAR COUNTERS command to reset all the statistic counters to zero. If the maximum limit of a counter is reached, the counter rolls over. Each error type is followed by the number of packets received containing that error.

Clear counter starts at the time you issued the Clear Counter command.

For more information on repeater statistics, refer to the CoreBuilder 5000 Distributed Management Module User Guide.

4-14 CONFIGURING THE MODULE

Monitoring the Front Panel

Use the LEDs on the front panel of the 12-Port 100BASE-TX Workgroup FastModule to monitor the status of each port. The 12-Port 100BASE-TX Workgroup FastModule has one Module Status LED and 12 bicolor port activity and status LEDs.

Module Status LED A single LED located at the top of the faceplate indicates the status of

the module (see Figure 4-1).

Port Status and

Activity LEDs

The 12-Port 100BASE-TX Workgroup FastModule has one bicolor LED for each port. This LED is capable of displaying the following two colors:

■ Green – Displays port status information

■ Yellow – Displays port traffic information

Monitoring the Front Panel 4-15

Figure 4-1 shows the location of the LEDs. Each LED indicates the state

of a port as described in Table 4-2

MOD STAT

1 4 7

10X

11X

12X

Module status LED

Port status LEDs

RJ45 connectors (ports 1 to 4)

RJ45 connectors (ports 5 to 8)

RJ45 connectors (ports 9 to 12)

6512M-TX

Figure 4-1 12-Port 100BASE-TX Workgroup FastModule Faceplate

4-16 CONFIGURING THE MODULE

Table 4-2 describes the states of port LEDs.

Table 4-2 12-Port 100BASE-TX Workgroup FastModule LED Interpretations

LED Name Color State Indicates

Module Status Green Off No power to hub or insufficient

power in the hub to support this module.

Module download in progress. Blinking Module failed self-diagnostics. On Module is OK.

Port Activity/Status

(Ports 1 to 12)

Green On Port enabled and link OK with no

traffic.

DMM initiated channel check. 1 blink Link failure on the port. 2 blinks Port partitioned because of excessive

collisions.

If a port partitions, it is automatically

reconnected to the network when

the problem no longer exists. 3 blinks Port jabber because long packets are

being sent over the network. 4 blinks Link unstable due to carrier

integrity failure. Off Port or ports disabled or shutdown.

Yellow Off No packets are received on the

ports. On Link OK. Heavy traffic activity on the

port.

Download to processor flash

memory. Blinking Link OK. Normal activity on the port.

There is no DMM LED to report 100BASE-TX Workgroup FastModule activity.

Verifying LED and Network Operation 4-17

Verifying LED and Network Operation

Using the

CoreBuilder 5000

Controller Module

to Verify Bi-color

LED Operation

To determine if your configuration is operating correctly, you must verify network operations. This section describes LED and Network verification for the 12-Port 100BASE-TX Workgroup FastModule, including:

■ Using the CoreBuilder 5000 Controller Module to Verify Bicolor LED

Operation

■ Using the DMM to Verify Network Connections

For more information on the DMM, refer to the CoreBuilder 5000 Distributed Management Module User Guide.

The CoreBuilder 5000 hub controller module is equipped with a LED Test button on the front panel. Use this button to verify LED operation.

When you press the LED test button:

1 The module initiates a test to all modules in the hub. All LEDs respond

by lighting continuously for approximately 5 seconds.

2 During this time period, the LEDs should alternate between green and

yellow about every ½ second. Any LED that does not light is defective. The LED test does not disrupt network operation.

Using the DMM to

Verify Network

Connections

During a software download to the 12-Port 100BASE-TX Workgroup FastModule, the Module Status LED on the module is Off, and all of the other port LEDs are illuminated solid yellow until the download process is complete.

The Distributed Management Module allows you to verify each network connection (both backplane and isolated) for all CoreBuilder 5000 modules and monitor cards installed in your hub.

To initiate the verification process:

1 Press the Display Control Toggle button on the front of the DMM. 2 Observe the DMM LED matrix display sequentially cycle through each

network connection including fast_ethernet_1 through 4 or Isolated.

3 Each status port LED associated with the network indicated on the

DMM LED matrix display illuminates.

4-18 CONFIGURING THE MODULE

4 If you have an Ethernet network monitor card assigned to a 10 MB

Ethernet network on a module, the Module Status LED lights to indicate the network to which it is assigned.

The following example illustrates the verification process.

Verifying Network Connections for the 12-port 100BASE-TX

Workgroup

FastModule

This section describes how to verify network connections for a newly-installed 12-Port 100BASE-TX Workgroup FastModule. Assume you have a module that has its ports connected to Fast Ethernet Network FE3.

To verify this configuration:

1 Press the Display Control Toggle button located on the front of the

DMM.

2 Once initiated, the DMM cycles through to the fast_ethernet network

connection (in this case FE3) and performs the following: a Displays the current network under examination (as shown on the

DMM LCD display)

b Lights the port status LEDs associated with the current network

3 Since all ports on the module are connected only to FE3, the network

verification lights all the status LEDs. Conversely, if you configured four 12-Port 100BASE-TX Workgroup FastModules with connections to all four backplane networks, the network verification process would cycle through all four networks.

TROUBLESHOOTING

Troubleshooting Using the Module Status LED

This chapter describes troubleshooting procedures for the 3Com CoreBuilder Information on troubleshooting can assist you in verifying the module operation.

This chapter contains the following sections:

■ Troubleshooting Using the Module Status LED

■ Troubleshooting Using the Port Status LEDs

■ Obtaining Technical Assistance

In certain situations, the module status LED may not light. Table 5-1 outlines possible causes and some solutions for troubleshooting the Module Status LED.

Table 5-1 Module Status LED Troubleshooting

LED State Possible Cause Corrective Action

Off No power to hub Check the controller module power

Blinks Failed module diagnostics Replace the failed module.

™

5000 12-Port 100BASE-TX Workgroup FastModule.

LEDs.

The hub does not have enough available power for a new module installation

The 12-port 100BASE-TX module is faulty

Add another power supply to the hub.

Use the SHOW POWER BUDGET management command to ascertain available power in the hub. See the

CoreBuilder 5000 Distributed Management Module Commands Guide for details.

Try a different 12-Port 100BASE-TX module.

5-2 TROUBLESHOOTING

Troubleshooting Using the Port Status LEDs

A blinking Port Status indicator signals a problem with a port or a link connected to a port. Once a port detects a problem, you can further analyze the problem by counting the number of blinks. Ta bl e 5 -2 outlines possible causes and some solutions for troubleshooting the Port Status LEDs.

Table 5-2 Port Status LED Troubleshooting

LED State Indication Possible Cause Corrective Action

1 blink Link failure Cables not connected Connect cables.

Cables broken Check cables using cable

Speed mismatch Check network speeds. Connected device not

powered on or it is faulty

2 blinks Port

partitioned

3 blinks Port jabber Faulty node connection Reset. 4 blinks Link

unstable or isolated

Off Ports

disabled

Faulty cable Check cable using cable tester.

Looped network Check network wiring

Due to carrier integrity failure or an intermittent cable fault

Ports disabled Enable ports. 12-port 100BASE-TX

Module not powered Broken LED Press the LED test on the

Bad 12-port 100BASE-TX module

tester. Repair or replace cables.

Check on connection.

Repair or replace cable.

topology and remove any loops that have been created.

Check connections.

Check the controller module Power LEDs.

controller module. Replace module.

Obtaining Technical Assistance 5-3

Obtaining Technical Assistance

You can receive assistance for installing and troubleshooting the 3Com CoreBuilder 5000 100BASE-TX Workgroup FastModule by calling either your 3Com reseller or 3Com Technical Support. Be prepared to supply a representative with the following information:

■ Description of the problem

■ Steps you have taken to try and correct the problem

■ Type and software version of the CoreBuilder 5000 Distributed

Management Module being used

■ Version of software installed on your CoreBuilder 5000 FastModule

■ Status of the front panel LEDs

■ Configuration of your network

■ Configuration of your concentrator

For instructions on contacting Technical Support for your product, refer to Appendix B, Technical Support

SPECIFICATIONS

This appendix lists specifications for the CoreBuilder™ 5000 12-Port 100BASE-TX Workgroup FastModules and information on cables and connectors:

■ Standard Protocol

■ Cable Specifications

■ Environmental Specifications

■ Mechanical Specifications

■ Power Specifications

■ Regulatory Compliance

Standard Protocol Table A-1 lists the standard protocol compliance supported by the

CoreBuilder 5000 100BASE-TX Workgroup FastModule.

Table A-1 Standard Supported Protocol

Standard Protocol

IEEE 802.3u 100BASE-TX compliance

Cable Specifications Table A-2 lists the required cable type and maximum segment length.

Table A-2 Required Cable Type and Maximum Segment Length

Media Required Cable Type Maximum Segment Length 100BASE-TX 100 Ohm UTP Category 5 100 m (328 ft)

100 Ohm STP 100 m (328 ft)

A-2 SPECIFICATIONS

Environmental Specifications

Mechanical Specifications

Power Specifications

Table A-3 describes the required operating conditions for

CoreBuilder 5000 100BASE-TX Workgroup FastModules.

Table A-3 Environmental Specifications

Specification Value Operating Temperature 32 to 122 °F (0 to 50 °C) Storage Temperature -40 to 151 °F (-40 to 66 °C) Operating Humidity Less than 95%, non-condensing

Table A-4 describes the dimensions and weight of the CoreBuilder 5000

100BASE-TX Workgroup FastModules.

Table A-4 Mechanical Specifications

Model Number Dimensions Weight 3C96512M-TX 1.0" W x 10.275" L x 14.37" H 2.4 lb

Table A-5 describes the required power specifications for

CoreBuilder 5000 100BASE-TX Workgroup FastModules.

Table A-5 Power Specifications

Power Requirements at

Model Number 3C96512M-TX 45.0 W 3.0 W 1.0 W 2.0 W 0 W

+12 V +5 V -5 V +2 V -12 V

Regulatory Compliance A-3

Regulatory Compliance

Table A-6 lists the regulatory certifications for all CoreBuilder 5000

hubs.

Table A-6 Regulatory Certifications

Certification Description

Safety UL 1950

CSA 22.2 Number 950 (for power supplies also CSA 234 Level 3)

TUV, VDE EN 60950 CB Report Certificate to IEC 950

Emissions FCC Part 15 Class A using UTP cable

EN 55022 (CISPR 22 Class A) using UTP cable EN 55022 (CISPR 22 Class B) using STP cable VCCI Level 1 registration

TECHNICAL SUPPORT

3Com provides access to technical support information through a variety of services. This appendix describes these services.

Information contained in this appendix is correct at time of publication. For the very latest, access 3Com Corporation’s World Wide Web site as described below.

This appendix describes:

■ Online Technical Services

■ Support From Your Network Supplier

■ Support From 3Com Corporation

■ Returning Products for Repair

■ Accessing the 3Com MIB

Online Technical Services

■ Contacting 3Com Technical Publications

3Com offers worldwide product support 24 hours a day, 7 days a week, through the following online systems:

■ World Wide Web Site

■ 3Com Bulletin Board Service)

■ 3ComFacts Automated Fax Service

■ 3ComForum on CompuServe Online Service

B-2 TECHNICAL SUPPORT

World Wide Web Site Access the latest networking information on 3Com Corporation’s World

Wide Web site by entering our URL into your Internet browser:

http ://ww w. 3Com .c om/

This service features news and information about 3Com products, customer service and support, 3Com Corporation’s latest news releases, NetAge Magazine, and more.

3Com Bulletin Board

Service

3ComBBS contains patches, software, and drivers for all 3Com products, as well as technical articles. This service is available through modem or ISDN 24 hours a day, 7 days a week.

Access by Analog Modem

To reach the service by modem, set your modem to 8 data bits, no parity, and 1 stop bit. Call the telephone number nearest you:

Country Data Rate Telephone Number

Australia up to 14400 bps 61 2 9955 2073 Brazil up to 14400 bps 55 11 547 9666 France up to 14400 bps 33 1 6986 6954 Germany up to 28800 bps 4989 62732 188 Hong Kong up to 14400 bps 852 2537 5608 Italy (fee required) up to 14400 bps 39 2 27300680 Japan up to 14400 bps 81 3 3345 7266 Mexico up to 28800 bps 52 5 520 7853 P. R. of China up to 14400 bps 86 10 684 92351 Singapore up to 14400 bps 65 534 5693 Taiwan up to 14400 bps 886 2 377 5840 U.K. up to 28800 bps 44 1442 438278 U.S.A. up to 28800 bps 1 408 980 8204

Access by Digital Modem

ISDN users can call 3ComBBS using a digital modem for fast access up to 56 Kbps. To access 3ComBBS using ISDN, use the following number:

408 654 2703

Online Technical Services B-3

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, 7 days a week.

Call 3ComFacts using your Touch-Tone telephone using one of these international access numbers:

Country Telephone Number

Hong Kong 852 2537 5610 U.K. 44 1442 278279 U.S.A. 1 408 727 7021

Local access numbers are available within the following countries:

Telephone

Country

Australia 1 800 123853 Netherlands 06 0228049 Belgium 0800 71279 Norway 800 11062 Denmark 800 17319 Portugal 0505 442 607 Finland 98 001 4444 Russia (Moscow only) 956 0815 France 05 90 81 58 Spain 900 964 445 Germany 0130 81 80 63 Sweden 020 792954 Italy 1678 99085 U.K. 0800 626403

Number

Country

Telephone

Number

3ComForum on

CompuServe Online

Service

3ComForum is a CompuServe-based service containing patches, software, drivers, and technical articles about 3Com products, as well as a messaging section for peer support. To use 3ComForum, you need a CompuServe

account.

To use 3ComForum:

1 Log on to CompuServe. 2 Ty pe

go threecom

3 Press Return to view the 3ComForum main menu.

B-4 TECHNICAL SUPPORT

Support From Your Network Supplier

If additional assistance is required, contact your network supplier. Several suppliers are authorized 3Com service partners who are qualified to provide a variety of services, including network planning, installation, hardware maintenance, application training, and support services.

If you contact your network supplier for assistance, have the following information ready:

■ Diagnostic error messages

■ A list of system hardware and software, including revision levels

■ Details about recent configuration changes, if applicable

If you are unable to contact your network supplier, refer to the following section on how to contact 3Com.

Support From 3Com Corporation B-5

Support From 3Com Corporation

If you are unable to receive support from your network supplier, technical support contracts are available from 3Com.

Contact your local 3Com sales office to locate your authorized service provider using one of the following numbers:

Regional Sales Office Telephone Number Regional Sales Office Telephone Number

3Com Corporation

U.S.A.

3Com ANZA

East West

3Com Asia Limited

China

Hong Kong India Indonesia Korea Malaysia Singapore Taiwan Thailand

3Com Benelux B.V.

Belgium Netherlands

3Com Canada

Calgary Montreal Ottawa Toronto Vancouver

3Com France

3Com GmbH

Austria Czech and Slovak Republics Germany

Hungary Poland Switzerland

800 NET 3Com or 1 408 764 5000

61 2 9937 5000 61 3 9866 8022

86 10 68492 568 (Beijing) 86 21 6374 0220 Ext 6115 (Shanghai) 852 2501 1111 91 11 644 3974 62 21 523 9181 82 2 319 4711 60 3 732 7910 65 538 9368 886 2 377 5850 662 231 8151 4

32 725 0202 31 30 6029700

403 265 3266 514 683 3266 613 566 7055 416 498 3266 604 434 3266

33 1 69 86 68 00

43 1 5134323 42 2 21845 800 49 30 3498790 (Berlin) 49 89 627320 (Munich) 36 1 250 83 41 48 22 6451351 41 31 996 14 14

3Com Ireland

3Com Japan

3Com Latin America

Argentina Brazil Chile Colombia Mexico Peru Venezuela

3Com Mediterraneo

Italy

3Com Middle East

3Com Nordic AB

Denmark Finland Norway Sweden

3Com Russia

3Com South Africa

3Com UK Limited

353 1 820 7077 81 3 3345 7251

54 1 312 3266 55 11 546 0869 56 2 633 9242 57 1 629 4110 52 5 520 7841 51 1 221 5399 58 2 953 8122

39 2 253011 (Milan) 39 6 5279941 (Rome)

971 4 349049

45 39 27 85 00 358 0 435 420 67 47 22 18 40 03 46 8 632 56 00

007 095 2580940 27 11 807 4397 44 131 2478558 (Edinburgh)

44 161 8737717 (Manchester) 44 1628 897000 (Marlow)

B-6 TECHNICAL SUPPORT

Returning Products for Repair

Accessing the 3Com MIB

Before you send a product directly to 3Com for repair, you must first obtain a Return Materials Authorization (RMA) number. Products sent to 3Com without RMA numbers are returned to the sender unopened, at the sender’s expense.

To obtain an RMA number, call or fax:

Country Telephone Number Fax Number

U.S.A. and Canada 1 800 876 3266, option 2 408 764 7120 Latin America 1 408 326 7801 408 764 7120 Europe, South Africa and

Middle East Outside Europe, U.S.A.,

and Canada

44 1442 438125 44 1442 435822

1 408 326 7804 1 408 764 7120

The 3Com Management Information Base (MIB) describes commands that enable you to manage 3Com SNMP-based products. The MIB is available over the Internet on an anonymous FTP server. Updates to these MIBs are released as new 3Com products are introduced.

To access Internet versions:

1 FTP to

ftp.3com.com (151.104.9.65).

2 Enter the login name anonymous . 3 Enter your full Internet e-mail address as the password

(for example,

4 Change to the /pub/mibs directory using the command

jdoe@company.com).

cd/pub/mibs.

5 Read the readisd.txt file to determine the MIB or MIBs you need to

manage your 3Com products.

6 To view the 3Com MIB, OID, or schema entries, enter the

■ To pause the display, press Ctrl+S.

■ To continue the display, press Ctrl+Q.

ls command.

7 Copy the MIB, OID, or schema files to your current directory using the

appropriate command (for example,

8 Exit the FTP session using the

quit command.

get isd.mib).

Contacting 3Com Technical Publications B-7

Contacting 3Com Technical Publications

02/06/97

If you have comments or questions on 3Com Technical Publications documents, contact the Technical Publications group by fax at (508) 229-1551.

INDEX

Numerics

100BASE-TX Workgroup FastModule

description faceplate 1-2 features 1-3 sample configuration 2-7

12-port 100BASE-TX FastModule

configuring faceplate 4-15 module status LED 5-1 port status LEDs 5-2

procedures for handling 3-1 3Com Bulletin Board Service (3ComBBS) B-2 3Com sales offices B-5 3Com URL B-2 3ComFacts B-3 3ComForum B-3 7-port 100BASE-FX/TX FastModule

configuring with

Activity LEDs 4-16 ALERT FILTER command 4-4 Audience of Manual 1

1-1

4-1

2-8

Configuration rules

general

Configuring redundancy 2-6 Conventions

defined

CoreBuilder 5000 12-port 100BASE-TX

FastModule

CoreBuilder 5000 hub

hot swap capabilities

2-2

4-15

3-7

Determining model number 1-4 DIP switch settings 3-5 DIP switches

definition location 3-4 module configuration 3-4 overview 3-4 settings 3-4, 4-5 using 4-2

DMM (Distributed Management Module)

required version

Downlink

switching module

3-5

2-1

2-8

Backup link 2-5 Bi-color LED operation 4-17 bulletin board service B-2

Cable category 2-3

UTP or STP 2-3 Cabling

redundant links Class 1 repeater

description

internal delay 2-3 CompuServe B-3 Configuration overview 4-2

2-6

2-3

Electrostatic discharge

precautionary procedures

Environmental specifications A-2

3-1

Faceplate

12-port 100BASE-TX FastModule

FastModules

hot swapping fax service. See 3ComFacts FCC notice

1-3

Gathering repeater statistics 4-7, 4-11

4-15

2 INDEX

Hot swap capability 3-7 Hot swapping FastModules 1-3 How to use guide 1 Hub-to-node connections 2-7

Installation

hot swap capabilities module 3-8 quick installation chart 3-3

Isolated network 2-4

3-7

LEDs

verifying

Logical network 2-4

4-17

Management commands

disable port enable port 4-3 SET ALERT FILTER 4-4 SET AUTO POLARITY 4-5 setting redundancy 4-3 setting remote diagnostics 4-3 SHOW MODULE 4-6 shutdown 4-3

Manual

audience

Mechanical specifications A-2 MIBs

3Com reference documents 4

Model number

3C96512M-TX determining 1-4

Module

installing

Module statistics 4-7 Module status LED 4-16 Monitor command

description

Monitor output example 4-8

4-3

B-6

1-5

3-3

4-8

Network

assignment

verifying assignments 4-17 Network backplane restrictions 2-3 Network configuration rules 2-2 Network connections

making Network management 4-2

configuring 4-1 Network repeater statistics 4-7 Network selection 4-5

assigning connector 4-5 network supplier support B-4

4-5

2-7

Online technical services B-1

Polling interval 4-8

range 4-8 Port activity LEDs 4-16 Port Alert 4-4 Port Alert Filtering command 4-4 Port mode commands 4-3 Port redundancy

switchover conditions Port redundancy command 4-3 Port statistics 4-7 Port status LEDs 4-14, 4-16

troubleshooting 5-2 Power specifications A-2 Primary link 2-5 Procedures for unpacking 3-2

2-6

Redundancy 4-3 Regulatory compliance

specifications Repeater port statistics

gathering through SNMP Resilient link

switching fast module returning products for repair B-6

A-3

4-11

2-6

RFCs

reference documents

RJ-45 connector 1-5

Sample 100BASE-TX configuration 2-7 SET ALERT FILTER command 4-4 SET AUTO POLARITY command 4-5 Setting redundant links 2-5, 2-6 SHOW MODULE command 1-4, 4-6 Shutdown command 4-3 Simple Network Management Protocol (SNMP)

commands submitting requests 4-11

SNMP

port repeater statistics

SNMP requests

monitoring SNMP. See Simple Network Management Protocol Specifications

environmental

mechanical A-2

regulatory A-3 Statistic types 4-7 Status LEDs 4-16

troubleshooting 5-2 Supporting documentation

list Switchover

port redundancy

B-6

4-11

A-2

2-6

Unpacking procedures 3-2 URL B-2

Verifying

LED operation network operation 4-17

4-17

Workgroups 2-4, 2-8 World Wide Web B-2 WWW B-2

INDEX 3

Technical assistance 5-3 Technical support 5-3 technical support B-1

3Com URL B-2

bulletin board service B-2

fax service B-3

network suppliers B-4

product repair B-6

using CompuServe B-3 TELNET 1-4 Troubleshooting

module status LED

port status LEDs 5-2

technical assistance 5-3

5-1

3Com Corporation LIMITED WARRANTY

For purposes of this warranty, the CoreBuilder 5000 100BASE-TX Workgroup FastModule is considered an Internet working product.

HARDWARE 3Com warrants its hardware products to be free from defects in workmanship and materials, under

SOFTWARE 3Com warrants that the software programs licensed from it will perform in substantial conformance to the

normal use and service, for the following lengths of time from the date of purchase from 3Com or its Authorized Reseller:

Internetworking products 1 year

Network adapters Lifetime

Ethernet stackable hubs and Unmanaged Ethernet fixed port repeaters Lifetime*

*Power supply and fans in the stackable hubs and unmanaged repeaters 1 year

Other hardware products 1 year

Spare parts and spares kits 90 days

If a product does not operate as warranted above during the applicable warranty period, 3Com shall, at its option and expense, repair the defective product or part, deliver to Customer an equivalent product or part to replace the defective item, or refund to Customer the purchase price paid for the defective product. All products that are replaced will become the property of 3Com. Replacement products may be new or reconditioned. Any replaced or repaired product or part has a 90-day warranty or the remainder of the initial warranty period, whichever is longer.

3Com shall not be responsible for any software, firmware, information, or memory data of Customer contained in, stored on, or integrated with any products returned to 3Com for repair, whether under warranty or not.

program specifications therefor for a period of 90 days from the date of purchase from 3Com or its Authorized Reseller. 3Com warrants the media containing software against failure during the warranty period. No updates are provided. 3Com’s sole obligation with respect to this express warranty shall be (at 3Com’s discretion) to refund the purchase price paid by Customer for any defective software products, or to replace any defective media with software which substantially conforms to 3Com’s applicable published specifications. Customer assumes responsibility for the selection of the appropriate applications program and associated reference materials. 3Com makes no warranty or representation that its software products will work in combination with any hardware or applications software products provided by third parties, that the operation of the software products will be uninterrupted or error free, or that all defects in the software products will be corrected. For any third-party products listed in the 3Com software product documentation or specifications as being compatible, 3Com will make reasonable efforts to provide compatibility, except where the noncompatibility is caused by a “bug” or defect in the third party’s product.

(1 year if not registered)

STANDARD WARRANTY S

ERVICE

WARRANTIES EXCLUSIVE IF A 3COM PRODUCT DOES NOT OPERATE AS WARRANTED ABOVE, CUSTOMER’S SOLE REMEDY FOR

Standard warranty service for hardware products may be obtained by delivering the defective product, accompanied by a copy of the dated proof of purchase, to 3Com’s Corporate Service Center or to an Authorized 3Com Service Center during the applicable warranty period. Standard warranty service for software products may be obtained by telephoning 3Com’s Corporate Service Center or an Authorized 3Com Service Center, within the warranty period. Products returned to 3Com’s Corporate Service Center must be pre-authorized by 3Com with a Return Material Authorization (RMA) number marked on the outside of the package, and sent prepaid, insured, and packaged appropriately for safe shipment. The repaired or replaced item will be shipped to Customer, at 3Com’s expense, not later than 30 days after receipt of the defective product by 3Com.

BREACH OF THAT WARRANTY SHALL BE REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM’S OPTION. TO THE FULL EXTENT ALLOWED BY LAW, THE FOREGOING WARRANTIES AND REMEDIES ARE EXCLUSIVE AND ARE IN LIEU OF ALL OTHER WARRANTIES, TERMS, OR CONDITIONS, EXPRESS OR IMPLIED, EITHER IN FACT OR BY OPERATION OF LAW, STATUTORY OR OTHERWISE, INCLUDING WARRANTIES, TERMS, OR CONDITIONS OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, AND SATISFACTORY QUALITY. 3COM NEITHER ASSUMES NOR AUTHORIZES ANY OTHER PERSON TO ASSUME FOR IT ANY OTHER LIABILITY IN CONNECTION WITH THE SALE, INSTALLATION, MAINTENANCE, OR USE OF ITS PRODUCTS.

3COM SHALL NOT BE LIABLE UNDER THIS WARRANTY IF ITS TESTING AND EXAMINATION DISCLOSE THAT THE ALLEGED DEFECT IN THE PRODUCT DOES NOT EXIST OR WAS CAUSED BY CUSTOMER’S OR ANY THIRD PERSON’S MISUSE, NEGLECT, IMPROPER INSTALLATION OR TESTING, UNAUTHORIZED ATTEMPTS TO REPAIR OR MODIFY, OR ANY OTHER CAUSE BEYOND THE RANGE OF THE INTENDED USE, OR BY ACCIDENT, FIRE, LIGHTNING, OR OTHER HAZARD.

LIMITATION OF LIABILITY TO THE FULL EXTENT ALLOWED BY LAW, 3COM ALSO EXCLUDES FOR ITSELF AND ITS SUPPLIERS ANY

LIABILITY, WHETHER BASED IN CONTRACT OR TORT (INCLUDING NEGLIGENCE), FOR INCIDENTAL, CONSEQUENTIAL, INDIRECT, SPECIAL, OR PUNITIVE DAMAGES OF ANY KIND, OR FOR LOSS OF REVENUE OR PROFITS, LOSS OF BUSINESS, LOSS OF INFORMATION OR DATA, 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, AND LIMITS ITS LIABILITY TO REPAIR, REPLACEMENT, OR REFUND OF THE PURCHASE PRICE PAID, AT 3COM’S OPTION. THIS DISCLAIMER OF LIABILITY FOR DAMAGES WILL NOT BE AFFECTED IF ANY REMEDY PROVIDED HEREIN SHALL FAIL OF ITS ESSENTIAL PURPOSE.

Some countries, states, or provinces do not allow the exclusion or limitation of implied warranties or the limitation of incidental or consequential damages for certain products supplied to consumers, so the above limitations and exclusions may be limited in their application to you. This warranty gives you specific legal rights which may vary depending on local law.

GOVERNING LAW This Limited Warranty shall be governed by the laws of the state of California.

3Com Corporation, 5400 Bayfront Plaza, Santa Clara, CA 95052-8145 (408) 764-5000

10/20/96

3com CoreBuilder 5000 100BASE-TX Workgroup FastModule User Guide

Specifications and Main Features

Frequently Asked Questions

User Manual

CONTENTS

FIGURES

TABLES

ABOUT THIS GUIDE

Audience This guide is intended for the following people at your site:

How to Use This Guide

Conventions The following tables list conventions used throughout this guide.

Related Documents 3

■ 3Com Documents

Reference Documents The following documents supply related background information:

INTRODUCTION

100BASE-TX Workgroup FastModule Description

100BASE-TX Workgroup FastModule Features

Table 1-2 100BASE-TX Workgroup FastModules

DESIGNING YOUR NETWORK

■ Software Requirements

Before Configuring Your Network

Basic Network Rules

Network Backplane Restrictions

Using Module Workgroups

Setting Redundant Links

Making Network Connections

■ Installing the Module

Precautionary Procedures

Unpacking Procedures

Quick Installation 3-3

Setting DIP Switches

■ DIP Switch Features

■ Setting the DIP Switches

DIP Switch Definition The DIP switch settings on the module refer to the backplane

Default DIP Switch Settings

Installing the Module

Configuring the Module

■ Configuring the Module

Enable/Disable/Shutdown Ports Command

Setting Port Redundancy Command

Setting Remote Diagnostics Command

Set Port Alert Filter Command

Network Selection

Showing Module Configurations

Show Port Command This command enables users to display brief and verbose information

Gathering Repeater Statistics

Monitor Command

Gathering Repeater Statistics Through SNMP

Show Counter Command

Monitoring the Front Panel

Module Status LED A single LED located at the top of the faceplate indicates the status of

Verifying LED and Network Operation

■ Using the DMM to Verify Network Connections

TROUBLESHOOTING

Troubleshooting Using the Module Status LED

Troubleshooting Using the Port Status LEDs

Obtaining Technical Assistance

SPECIFICATIONS

■ Cable Specifications

Standard Protocol

Environmental Specifications

Mechanical Specifications

Power Specifications

Regulatory Compliance

TECHNICAL SUPPORT

Online Technical Services

World Wide Web Site Access the latest networking information on 3Com Corporation’s World

Access by Analog Modem

Access by Digital Modem

Support From Your Network Supplier

Support From 3Com Corporation

Returning Products for Repair

Contacting 3Com Technical Publications

INDEX

3Com Corporation LIMITED WARRANTY