3Com 5124M-TPCL manual Configuration in a Managed Environment

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6.Attach the other ends of the cables to any of the following:

❑A 10BASE-T transceiver

❑A patch panel

❑A 10BASE-T adapter card

Configuration in a Managed Environment

With an EMM already installed, all DIP switch settings on the 24-Port Module are ignored. For this reason, 3Com recommends that you use network management commands instead of DIP switches to configure the module.

Note: Do not use a slave management module to manage (for example, configure or get statistics for) a 24-Port Module.

Note: To fully support Model Number 5124M-TPCL, you must have EMM Version v3.2 or later. To fully support Model Number 5124M-TP, you must have EMM Version v4.30 or later.

The following sections describe important module configuration issues and settings you can configure for both models of the 24-Port Module:

❑If Management is Not Available

❑Before Configuring the Module

❑Enabling Ports

❑Enabling Port Redundancy

❑Enabling Link Integrity

❑Selecting a Network

Installing and Operating the Module 3 - 17

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Contents ONline Ethernet 24-Port 10BASE-T Module Installation Guide VDE Class B Compliance Restricted Rights Page Contents Installing and Operating the Module Troubleshooting Page Figures ONline Ethernet 24-Port 10BASE-T Module Installation Guide Tables Page Audience How to Use This GuideStructure of This Guide Usr/snm/agents Document ConventionsConvention Indicates Example Related Documents Reference Documents 3Com DocumentsPage Ethernet 24-Port 10BASE-T Module Description IntroductionModule Features Bank Switching Capability Model Number 5124M-TPCL FeaturesTheory of Operation Model Number 5124M-TP FeaturesTypical 24-Port Module Configuration Page Designing and Expanding the Network Understanding the General Rules Rules for Configuring a NetworkRule Definition Recommendations/Notes Seven Basic Network RulesCertain LAN devices Seven Basic Network Rules LAN Product Equivalent Distance meters LAN EquivalenceLAN Product Equivalent Distances LAN Product Equivalent Choosing a Network Backbone Cabling StructureStar-Wiring Configuration Building a Network Star ConfigurationSerial Configuration Building a Network Serial ConfigurationFiber Backbone, 10BASE-T To-The-Desk Port Module ConfigurationsExample Sample Configuration Distance Calculation 10BASE-T Backbone, 10BASE-T To-The-Desk Unshielded Twisted Pair Network Using 24-Port Modules Establishing Fault-Tolerant Configurations Using Patch PanelsSetting Backbone Redundancy Setting Port RedundancyRedundant Twisted Pair Backbone Designing and Expanding the Network 2 Page Installing and Operating the Module Step Procedure Section Title Precautionary ProceduresQuick Installation Procedures for Completing InstallationEstablish connections from the 24-Port Setting the DIP Switches Unpacking ProceduresDIP Switch Overview Model 5124M-TPCL and Model 5124M-TP DIP Switch Location DIP Switch Description Default DIP Switch SettingsLabel Function Factory DIP Switch Setting Network Selection Channel Network Select DIP Switch SettingsDIP Switch Setting Conn Installing the Module Installing a 24-Port Module Model Number 5124M-TPCL Port Module Cable Connection Model Number 5124M-TPCL Installing the Cable Tie-Wrap Kit Using 90 Cable ConnectorsAttaching the Tie-Wrap Bracket to the Module Securing 90 Cables to the Module Attaching Cables With 90 Connectors Configuration in a Managed Environment If Management is Not Available Enabling Port Redundancy Before Configuring the ModuleEnabling Ports Selecting a Network Enabling Link IntegrityEnabling Remote Diagnostics Mode Setting the Autopartition Threshold Value Showing Module Configurations Saving Module ConfigurationsShow Module Show Port Telco Gathering Network Statistics Selecting the Per-Port Counters Connector Shows the location of the LEDs on Model Number 5124M-TPCL Monitoring the Front PanelShows the location of the LEDs on Model Number 5124M-TP LED Name Color State Indicates Port Module LED InterpretationsVerifying LED and Network Assignments Using the LED Check ButtonNetwork Check Codes LED State Network ConfigurationPage Troubleshooting LED State Indication Possible Cause Corrective Action Troubleshooting Using the Port Status LEDsTroubleshooting Using the Port Status LEDs Troubleshooting Using the Port Status LEDs LED State Possible Cause Corrective Action Troubleshooting Using the Port Activity LEDsTroubleshooting Using the Port Activity LEDs Technical AssistanceSpecifications Model Number 5124M-TP General SpecificationsTable A-1 -Port Module General Specifications Specification ValuePower Specifications Values Power SpecificationsTable A-2 -Port Module Power Specifications Table A-4 -Port Module Environmental Specifications Environmental SpecificationsTable A-3 -Port Module Fuse Specifications Fuse Specifications for 24-Port ModuleMechanical 5124M-TPCL Values 5124M-TP Values Specifications Mechanical SpecificationsTwisted Pair Cable and Connector Specifications Table A-5 -Port Module Mechanical SpecificationsShielding Nominal Pairs Impedance Twisted Pair Cable SpecificationsTable A-6. IBM Twisted Pair Cable Specifications IBM Type No.RJ-45 Connector Pinouts Twisted Pair Connector SpecificationsFigure A-1 -Port Module RJ-45 Connector Pinouts Pin Connector PinoutsFigure A-2 -Pin Male and Female Connectors Table A-7 -Pin Cable Pinouts and Port Assignments Port TX, + RX, + Not Used Connecting Twisted Pair Cables On-line Technical Support Technical SupportWorld Wide Web Site Support from Your Network SupplierEmail Technical Support Support from 3Com Returning Products for Repair Accessing the 3Com MIB3Com Technical Publications Page Index Activity LEDs, 3-29,3-31 VDE compliance