3Com 5108M-TP manual Ii ONline Ethernet 10BASE-T Module User’s Guide

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Federal Communications Commission Notice

This equipment has been 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 lesexigences du Règlement sur le matériel brouilleur du Canada.

VDE Class B Compliance

Hiermit wird bescheinigt, dass der 5108M-TP in Üebereinstimmung mit den Bestimmungen der Vfg 243/1991 funkentstöert ist.

Der Deutschen Bundespost wurde das Inverkehrbringen dieses Geraetes angezeigt und die Berechtigung zur Üeberprüefung der Serie auf Einhaltung der Bestimmungen eingeräeumt.

Einhaltung mit betreffenden Bestimmugen kommt darauf an, dass geschirmte Ausfuehrungen gebraucht werden. Fuer die Beschaffung richtiger Ausfuehrungen ist der Betreiber verantwortlich.

This is to certify that the 5108M-TP is shielded against radio interference in accordance with the provisions of Vfg 243/1991.

The German Postal Services have been advised that this equipment is being placed on the market and that they have been given the right to inspect the series for compliance with regulations.

Compliance with applicable regulations depends on the use of shielded cables. The user is responsible for procuring the appropriate cables.

EN55022/CISPR22 Compliance

This equipment conforms to the Class A emissions limits for a digital device as defined by EN55022 (CISPR22).

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.

UK General Approval Statement

The ONcore Switching Hub, ONline System Concentrator, and ONsemble StackSystem Hub are manufactured to the International Safety Standard EN 60950 and are approved in the UK under the General Approval Number NS/G/12345/J/100003 for indirect connection to the public telecommunication network.

Disclaimer

The information in this document is subject to change without notice and should not be construed as a commitment by 3Com Corporation. 3Com Corporation assumes no responsibility for any errors that may appear in this document.

Copyright Statement

© 1995, by Chipcom Corporation, a subsidiary of 3Com Corporation. Printed in U.S.A. All rights reserved. 3Com is a registered trademark of 3Com Corporation. ONcore is a registered trademark of Chipcom Corporation. The information contained herein is the exclusive and confidential property of 3Com Corporation. No part of this manual may be disclosed or reproduced in whole or in part without permission from 3Com Corporation.

Trademarks

Because of the nature of this material, numerous hardware and software products are mentioned by name. In most, if not all cases, these product names are claimed as trademarks by the companies that manufacture the products. It is not our intent to claim these names or trademarks as our own.

Artel, Chipcom, Ethermodem, Galactica, ONcore, ORnet, StarBridge, and TriChannel are registered trademarks of Chipcom Corporation.

Chipcom OpenHub, G-Man, LANsentry, MultiProbe, ONdemand, ONline, ONsemble, PowerRing, SL2000, SL3000, SL4000, StackJack, StackSystem, and SwitchCentral are trademarks of Chipcom Corporation.

The Chipcom Multichannel ArchitectureCommunications System is registered under U.S. Patent Number 5,301,303.

DEC, DECnet, the Digital logo, DELNI, POLYCENTER, VAX, VT100, and VT220 are trademarks of Digital Equipment Corporation.

IBM is a registered trademark of International Business Machines. NetView is a trademark of International Business Machines.

ii ONline Ethernet 10BASE-T Module User’s Guide

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Contents ONline Ethernet 10BASE-T Module User’s Guide Ii ONline Ethernet 10BASE-T Module User’s Guide ONline Ethernet 10BASE-T Module User’s Guide Iv ONline Ethernet 10BASE-T Module User’s Guide Contents Installing and Operating the Module Figures Viii ONline Ethernet 10BASE-T Module User’s Guide Tables Page How to Use This Guide AudienceStructure of This Guide Usr/snm/agents Document ConventionsConvention Indicates Example Related Documents 3Com Documents Reference DocumentsPage Introduction ONline Ethernet 10BASE-T ModuleIndicators BASE-T Module Faceplate and ONline System Concentrator LED Name Color State Indicates Dip SwitchesInterpretation of the 10BASE-T Module LEDs Dip Switch SW1 Port Status Dip Switch SW3 Crossover Mode, Channel Select, Squelch Dip Switch SW1 Settings and InterpretationsCrossover Mode Switch Dip Switch SW3 Settings for Switches 1Switch Function Factory Switch Setting Default Off Squelch Mode SwitchChannel Select Switch Settings Dip Switch SW3 Settings and Interpretations for Switches 2 Switch Channel SelectionEnable Related FeaturesDip Switch SW6 Settings and Interpretations LED State Channel Configuration Channel Check CodesPage Designing and ExpandingtheNetwork Understanding the General Rules Basic Network RulesSeven Basic Network Rules Rule Definition Recommendations/NotesCertain LAN devices Seven Basic Network Rules LAN Product Equivalent Distance meters LAN EquivalenceLAN Product Equivalent Distances Fiber Backbone, Twisted Pair To-The-Desk Fiber Backbone, Twisted Pair To-The-Desk Example Sample Configuration Distance Calculation Shielded Twisted Pair High Squelch Low Squelch IBM Type Maximum Link Distance on Twisted PairUnshielded Twisted Pair High Squelch Low Squelch Twisted Pair Backbone, Twisted Pair To-The-Desk Unshielded Twisted Pair NetworkRedundant Twisted Pair Configuration Redundant LinksPage Patch Panels Installing and Operating the Module Precautionary ProceduresUnpacking Procedures Installation ProceduresInstalling a 10BASE-T Module BASE-T Module Cable Connection Troubleshooting TroubleshootingTroubleshooting With the Status LEDs Troubleshooting With the Port Status LEDsTroubleshooting With the Port Status LEDs Troubleshooting With the Port Status LEDs Possible Problem Troubleshooting State Solutions Troubleshooting With the Activity LEDsTroubleshooting With the Port Activity LEDs LED NameTechnical Assistance ONline Ethernet 10BASE-T Module Specifications Electrical SpecificationsGeneral Specifications Environmental SpecificationsMechanical Specifications Twisted Pair Connectors and Cables Twisted Pair ConnectorsFigure A-1. RJ45 Connector Pin-outs Twisted Pair CablesConnecting Twisted Pair Cables Page Technical Support On-line Technical SupportWorld Wide Web Site Support from Your Network SupplierEmail Technical Support Support from 3Com Accessing the 3Com MIB Returning Products for Repair3Com Technical Publications Page Index MIB, B-4