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

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

Contents

ONline Ethernet 10BASE-T Module User’s Guide Document Number Printed March Model Number 5108M-TP 3Com Corporation118 Turnpike Road Southborough, MA U.S.A 508 FAX 508 EN55022/CISPR22 Compliance Federal Communications Commission NoticeCanadian Emissions Requirements VDE Class B ComplianceRestricted Rights ONline Ethernet 10BASE-T Module User’s Guideiv ONline Ethernet 10BASE-T Module User’s Guide Chapter 2 - Designing and Expanding the Network ContentsHow to Use This Guide Chapter 1 - IntroductionAppendix B - Technical Support Chapter 3 - Installing and Operating the ModuleChapter 4 - Troubleshooting Appendix A - SpecificationsFigures viii ONline Ethernet 10BASE-T Module User’s Guide Tables Page Audience How to Use This GuideStructure of This Guide Example Document ConventionsConvention IndicatesWarning Wear eye Related DocumentsA Caution. A A Warning. AReference Documents 3Com DocumentsPage The ONline Ethernet 10BASE-T Module 1 IntroductionIndicators Introduction 1 Figure 1-1. 10BASE-T Module Faceplate and ONline System ConcentratorState Dip SwitchesLED Name ColorFigure 1-2. 10BASE-T Module and Dip Switch Locations Dip Switch SW1 Port StatusDefault Dip Switch SW3 Crossover Mode, Channel Select, SquelchSwitch Switch SettingSwitch Setting Crossover Mode SwitchSquelch Mode Switch Switch1 - 8 ONline Ethernet 10BASE-T Module User’s Guide Channel Select Switch SettingsSwitch Dip Switch SW6 Link IntegrityChannel Selection SwitchSwitch Setting Related FeaturesLED and Channel Verification SwitchTable 1-6. Channel Check Codes Channel ConfigurationThe ONline Ethernet Network Management Module LED State1 - 12 ONline Ethernet 10BASE-T Module User’s Guide Designing and Expanding the Network 2 2 Designing and ExpandingtheNetworkBasic Network Rules Understanding the General RulesTable 2-1. Seven Basic Network Rules RuleDefinition Recommendations/NotesRecommendations/Notes Table 2-1. Seven Basic Network Rules ContinuedRule DefinitionThe fiber link distances RuleDefinition Recommendations/NotesDistance meters LAN EquivalenceLAN Product EquivalentEquivalent Fiber Backbone, Twisted Pair To-The-DeskTable 2-2. LAN Product Equivalent Distances Continued LAN ProductFiber Backbone, Twisted Pair To-The-Desk Example Figure 2-1. Sample Configuration Distance Calculation 150m Cable GaugeSupports Link Distances Up To 22 .6mmFigure 2-2. Unshielded Twisted Pair Network Twisted Pair Backbone, Twisted Pair To-The-DeskFigure 2-3. Redundant Twisted Pair Configuration Redundant LinksTo set redundancy between two 10BASE-T Modules, connect two links between the modules. The redundant link must be connected to a port on the same 10BASE-T Module as the primary link. Use a crossover adapter between each link unless you choose to uncross port 8 on one of the modules to make the connection. Refer to Chapter 1 for information on using crossover mode. Then use the SET PORT slot.port MODE REDUNDANT slot.port command to specify which port is the primary link and which is the backup link 2 - 14 ONline Ethernet 10BASE-T Module User’s Guide Patch PanelsPrecautionary Procedures 3 Installing and Operating the ModuleInstallation Procedures Unpacking ProceduresFigure 3-1. Installing a 10BASE-T Module Figure 3-2. 10BASE-T Module Cable Connection Troubleshooting 4 TroubleshootingIndication Troubleshooting With the Status LEDsTroubleshooting ProblemIndication TroubleshootingProblem LED StateIndication TroubleshootingProblem LED StateTroubleshooting Troubleshooting With the Activity LEDsPossible Problem SolutionsTechnical Assistance A Specifications ONline Ethernet 10BASE-T Module SpecificationsElectrical Specifications Environmental Specifications Mechanical SpecificationsGeneral Specifications Twisted Pair Connectors Twisted Pair Connectors and CablesFigure A-1. RJ45 Connector Pin-outs Twisted Pair CablesConnecting Twisted Pair Cables Page On-line Technical Support B Technical SupportSupport from Your Network Supplier Email Technical SupportWorld Wide Web Site Support from 3Com Returning Products for Repair Accessing the 3Com MIB3Com Technical Publications Page Numerics Index