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

CoreBuilder™ 5000
®
100BASE-TX Workgroup FastModule User Guide
http://www.3com.com/
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.
3Com Corporation reserves the right to revise this documentation and to make changes in content from time to time without obligation on the part of 3Com Corporation to provide notification of such revision or change.
3Com Corporation provides this documentation without warranty of any kind, either implied or expressed, including, but not limited to, the implied warranties of merchantability and fitness for a particular purpose. 3Com may make improvements or changes in the products or programs described in this documentation at any time.
UNITED STATES GOVERNMENT LEGENDS:
If you are a United States government agency, then this documentation and the software described herein are provided to you subject to the following restricted rights:
For units of the Department of Defense:
Restricted Rights Legend: Use, duplication, or disclosure by the Government is subject to restrictions as set forth in subparagraph (c) (1) (ii) for Restricted Rights in Technical Data and Computer Software Clause at 48 C.F.R. 52.227-7013.
For civilian agencies:
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 Unpublished rights reserved under the copyright laws of the United States.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.
Federal Communications Commission Notice
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
ii
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.
Trademarks
Unless otherwise indicated, 3Com registered trademarks are registered in the United States and may or may not be registered in other countries.
3Com, Boundary Routing, CardFacts, EtherLink, LANplex, LANsentry, LinkBuilder, NETBuilder, NETBuilder II, NetFacts, Parallel Tasking, SmartAgent, TokenDisk, TokenLink, Transcend, TriChannel, and ViewBuilder are registered trademarks of 3Com Corporation.
3TECH, CELLplex, CoreBuilder, EtherDisk, EtherLink II, FDDILink, MultiProbe, NetProbe, and ONline are trademarks of 3Com Corporation.
3ComFacts is a service mark of 3Com Corporation. The 3Com Multichannel Architecture Communications System is registered under U.S. Patent
Number 5,301,303. CompuServe is a registered trademark of CompuServe, Inc. DEC, DECnet, DELNI, POLYCENTER, VAX, VT100, VT220, and the Digital logo are trademarks of Digital
Equipment Corporation. OpenView is a registered trademark of Hewlett-Packard Company. Intel is a registered trademark of Intel Corporation. AIX, IBM, and NetView are registered trademarks of International Business Machines Corporation. Microsoft, MS-DOS, Windows, Windows 95, and Windows NT are registered trademarks of
Microsoft Corporation. NetWare and Novell are registered trademarks of Novell, Incorporated.
IPX is a trademark of Novell, Incorporated. OSF and OSF/Motif are registered trademarks of Open Software Foundation, Inc. ONC, OpenWindows, Solaris, Solstice, Sun, Sun Microsystems, SunNet Manager, and SunOS are trademarks
of Sun Microsystems, Inc. UNIX is a registered trademark of X/Open Company, Ltd. in the United States and other countries. Other brand and product names may be registered trademarks or trademarks of their respective holders.
Guide written by Jackie Bonin, edited by Pamela Taylor, and produced by Tracey Taylor.
iii
iv

CONTENTS

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
vi
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
ix

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
xi

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

Related Documents 3

Related Documents This section provides information on supporting documentation,
including:

3Com Documents

Reference Documents
3Com Documents The following documents provide additional information on 3Com
products:
CoreBuilder 5000 Integrated System Hub Installation and Operation Guide – Provides information on the installation, operation, and
configuration of the CoreBuilder 5000 hub. This guide also describes the principal features of the CoreBuilder 5000 Fault-Tolerant Controller Module.
CoreBuilder 5000 Distributed Management Module User Guide – Provides information on the CoreBuilder 5000 Distributed Management Module’s operation, installation, and configuration. This guide also describes the software commands associated with the distributed management module.
CoreBuilder 5000 Distributed Management Module Commands Guide – Describes each management command by providing detailed
information on the command’s format and use.
For a complete list of 3Com documents, contact your 3Com representative.
4 ABOUT THIS GUIDE

Reference Documents The following documents supply related background information:

Almquist, P., Type of Service in the Internet Protocol Suite, RFC 1349,
July 1992.
Case, J., Fedor, M., Scoffstall, M., and Davin, J., The Simple Network Management Protocol, RFC 1157, University of Tennessee at
Knoxville, Performance Systems International and the MIT Laboratory for Computer Science, May 1990.
Kastenholz, F., Definitions of Managed Objects for the Ethernet-Like Interface Types, RFC 1643, FTP Software, Inc., July 1994.
Kastenholz, F. and McCloghrie, K., Evolution of the Interfaces Group of MIB-II, RFC 1573, FTP Software and Hughes LAN Systems, January
1994.
McMaster, D. and McCloghrie, K., Definitions of Managed Objects for IEEE 802.3 Repeater Devices, RFC 1516, Synoptics Communications, Inc., September 1993.
Plummer, David C., An Ethernet Address Resolution Protocol, RFC 826, MIT, November 1982.
Postel, J. and Reynolds, J., Assigned Numbers, RFC 1700, ISI, October
1994.
Rose, M. and McCloghrie, K., Management Information Base for Network Management of TCP/IP-Based Internets: MIB-II, RFC 1213,
Performance Systems International and Hughes LAN Systems, March
1991.
Sollins, K., The TFTP Protocol (Revision 2), RFC 1350, MIT, July 1992.
Waldbusser, S., Remote Network Monitoring Management Information
Base, RFC 1757, Carnegie Mellon University, February 1995.
1

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
10
1X
2X
3X
4X
5X
6X
7X
8X
Module status LED
Port status LEDs
RJ45 connectors (ports 1 to 4)
RJ45 connectors (ports 5 to 8)
9X
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
2

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
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
3
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
1
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.
1
23
4 56
DIP switch
78
TX ports (RJ-45)
NOT USED NOT USED
NOT USED
NV
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
1
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
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.
4
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
32
.)
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
10
1X
2X
3X
4X
5X
6X
7X
8X
9X
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.
5

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

A
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
B

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
SM
, 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
A
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
2
4-15
3-7
D
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
B
Backup link 2-5 Bi-color LED operation 4-17 bulletin board service B-2
C
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
E
Electrostatic discharge
precautionary procedures
Environmental specifications A-2
3-1
F
Faceplate
12-port 100BASE-TX FastModule
FastModules
hot swapping fax service. See 3ComFacts FCC notice
1-3
ii
G
Gathering repeater statistics 4-7, 4-11
4-15
2 INDEX
H
Hot swap capability 3-7 Hot swapping FastModules 1-3 How to use guide 1 Hub-to-node connections 2-7
I
Installation
hot swap capabilities module 3-8 quick installation chart 3-3
Isolated network 2-4
3-7
L
LEDs
verifying
Logical network 2-4
4-17
M
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
1
B-6
1-5
3-3
4-8
N
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
O
Online technical services B-1
P
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
R
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
4
S
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
4-11
A-2
3
2-6
U
Unpacking procedures 3-2 URL B-2
V
Verifying
LED operation network operation 4-17
4-17
W
Workgroups 2-4, 2-8 World Wide Web B-2 WWW B-2
INDEX 3
T
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
Loading...