Manuals / Cabletron Systems / Computer Equipment / Switch

Cabletron Systems 3H02-04, 3H08-04 manual Connectivity Problems

Models: 3H08-04 3H02-04

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Chapter 5: Diagnostics and Troubleshooting

5.5.2 Connectivity Problems

If the FE Switch Modules power up normally, but the workstations are unable to communicate:

1.Check the LED for abnormalities which may help indicate the source of the problem. (LED behavior during normal operation is explained earlier in this chapter.)

2.Check the status of the ports using Local Console Manager

3.Check for loose connections between the switch module and devices.

4.Check that the proper type of cable is used: crossover or straight-through, depending on the configuration; distance limitations are adhered to, etc. (For more information on other limitations or restrictions that may apply, see the IEEE 802.3 standards specification.)

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FE Switch Module User Guide

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Cabletron Systems 3H02-04, 3H08-04 manual Connectivity Problems

Contents

FAST ETHERNET SWITCH MODULE 3H02-04 AND 3H08-04 USER GUIDE Page FE Switch Module User Guide DOC NOTICE FE Switch Module User GuideFCC NOTICE VCCI NOTICECABLETRON SYSTEMS, INC. PROGRAM LICENSE AGREEMENT EXCLUSION OF WARRANTY AND DISCLAIMER OF LIABILITYFE Switch Module User Guide CABLETRON SOFTWARE PROGRAM LICENSEFE Switch Module User Guide UNITED STATES GOVERNMENT RESTRICTED RIGHTSCONFIGURING CONTENTSCHAPTER 2 CONNECTING TO THE NETWORK CHAPTER 5 DIAGNOSTICS AND TROUBLESHOOTINGFE Switch Module User Guide ContentsTECHNICAL SPECIFICATIONS CHAPTER 6 ADDING/SWAPPING MODULESCHAPTER INTRODUCTION 1.1 USING THIS MANUAL Chapter 1 Introduction1.3 3H02-04 FE SWITCH MODULE 1.2 OVERVIEW1.3.1 Connectors 1.3.2 LEDs1.3.3 Ofﬂine Button 1.4.2 LEDs 1.4 3H08-04 FE SWITCH MODULE1.4.1 Connectors 1.4.3 Ofﬂine ButtonThe following conventions are used throughout this document 1.5 DOCUMENT CONVENTIONSFE Switch Module User Guide Chapter 1 IntroductionATX User Guide ATX MIB Reference Guide 1.6 RELATED MANUALS1.7 GETTING HELP anonymousA description of the failure CHAPTER CONNECTING TO THE NETWORK 2.1 POWER-UP LED SEQUENCE2.2 CONNECTING TO A NETWORK 2.2.1 Connecting the 3H02-04 FE Switch Module2.2.2 Connecting the 3H08-04 FE Switch Module Figure 2-2 3H08-04 Front Panel ConnectionsChapter 2 Connecting to the Network FE Switch Module User GuidePage CHAPTER CONFIGURING 3.1 CONNECTING THE LOCAL CONSOLE MANAGER 3.2 LOCAL CONSOLE MANAGER COMMANDS4.1 DISPLAYING SWITCH MODULE PORT STATUS CHAPTER MONITORINGDisabled - The port isn’t conﬁgured for Spanning Tree Total Collisions - number of collision during packet transmissions FE Switch Module User Guide Chapter 4 MonitoringPage CHAPTER DIAGNOSTICS AND TROUBLESHOOTING 5.1 POWER-UP TESTS5.2 POWER-UP RESULTS 5.3 OPERATIONAL DIAGNOSTICS Chapter 5 Diagnostics and Troubleshooting5.4 DIAGNOSTIC RESULTS 5.5 TROUBLESHOOTING 5.5.1 If the Module Fails to Power Up5.5.2 Connectivity Problems 6.1 UNPACKING THE SWITCH MODULE 6.2 ADDING A SWITCH MODULECHAPTER ADDING/SWAPPING MODULES 6.3 SWAPPING A SWITCH MODULE 7. Tighten the screws on each side of the switch module’s front panel FE Switch Module User Guide Chapter 6 Adding/Swapping ModulesPage APPENDIX A TECHNICAL SPECIFICATIONS 3H02-04 APPENDIX B CABLES B.1 TYPES/CONNECTORSB.2 CABLE SPECIFICATIONS FE Switch Module User GuideB.3 FAST ETHERNET PIN ASSIGNMENTS B.3.1 About RJ45 Connectors Figure B-1 RJ45 Connector Pin NumbersTable B-4 RJ45 Crossover Pin Assignments B.3.2 Crossover Wiring for the 3H02-04Table B-5 Crossover RJ45 Wiring Configuration RJ45 PinB.3.3 Straight-Through Wiring for the 3H02-04 B.3.4 Limitations & RestrictionsB.3.5 Deﬁnitions INDEX FE Switch Module User Guide IndexIndex-2