3Com 5124M-TPCL manual Verifying LED and Network Assignments, Using the LED Check Button

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Verifying LED and Network Assignments

Once you install the 24-Port Module, verify module operation using the front panel of the ONline Controller Module.

Using the LED Check Button

The ONline Controller Module is equipped with an LED check button on the front panel. Use the LED check button to:

❑Verify LED operation

❑Verify network (channel) assignment The LED check button:

❑Causes all LEDs in all modules in the concentrator to light

❑Causes each installed module to identify the network to which it is assigned

When you press the LED check button, the Controller Module initiates a test of all modules in the concentrator.

❑All LEDs should respond by lighting continuously for approximately 5 seconds.

❑Any LED that does not light is defective.

After 5 seconds elapse, the diagnostic continues with a network (channel) check of all installed modules.

❑Port Status LEDs on each installed module should blink the number of times corresponding to the network to which that module (or connector) is assigned.

3 - 32 ONline Ethernet 24-Port 10BASE-T Module Installation Guide

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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 How to Use This Guide AudienceStructure of This Guide Usr/snm/agents Document ConventionsConvention Indicates Example Related Documents 3Com Documents Reference DocumentsPage Introduction Ethernet 24-Port 10BASE-T Module DescriptionModule Features Model Number 5124M-TPCL Features Bank Switching CapabilityModel Number 5124M-TP Features Theory of OperationTypical 24-Port Module Configuration Page Designing and Expanding the Network Rules for Configuring a Network Understanding the General RulesSeven Basic Network Rules Rule Definition Recommendations/NotesCertain LAN devices Seven Basic Network Rules LAN Product Equivalent Distance meters LAN EquivalenceLAN Product Equivalent Distances Choosing a Network Backbone Cabling Structure LAN Product EquivalentBuilding a Network Star Configuration Star-Wiring ConfigurationBuilding a Network Serial Configuration Serial ConfigurationPort Module Configurations Fiber Backbone, 10BASE-T To-The-DeskExample Sample Configuration Distance Calculation 10BASE-T Backbone, 10BASE-T To-The-Desk Unshielded Twisted Pair Network Using 24-Port Modules Using Patch Panels Establishing Fault-Tolerant ConfigurationsSetting Port Redundancy Setting Backbone RedundancyRedundant Twisted Pair Backbone Designing and Expanding the Network 2 Page Installing and Operating the Module Procedures for Completing Installation Precautionary ProceduresQuick Installation Step Procedure Section TitleEstablish connections from the 24-Port Unpacking Procedures Setting the DIP SwitchesDIP 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 Using 90 Cable Connectors Installing the Cable Tie-Wrap KitAttaching 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 Enabling Link Integrity Selecting a NetworkEnabling Remote Diagnostics Mode Setting the Autopartition Threshold Value Saving Module Configurations Showing Module ConfigurationsShow Module Show Port Telco Gathering Network Statistics Selecting the Per-Port Counters Connector Monitoring the Front Panel Shows the location of the LEDs on Model Number 5124M-TPCLShows the location of the LEDs on Model Number 5124M-TP Port Module LED Interpretations LED Name Color State IndicatesUsing the LED Check Button Verifying LED and Network AssignmentsLED State Network Configuration Network Check CodesPage 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 Technical Assistance Troubleshooting Using the Port Activity LEDsTroubleshooting Using the Port Activity LEDs LED State Possible Cause Corrective ActionSpecifications Specification Value General SpecificationsTable A-1 -Port Module General Specifications Model Number 5124M-TPPower Specifications Values Power SpecificationsTable A-2 -Port Module Power Specifications Fuse Specifications for 24-Port Module Environmental SpecificationsTable A-3 -Port Module Fuse Specifications Table A-4 -Port Module Environmental SpecificationsTable A-5 -Port Module Mechanical Specifications Mechanical SpecificationsTwisted Pair Cable and Connector Specifications Mechanical 5124M-TPCL Values 5124M-TP Values SpecificationsIBM Type No. Twisted Pair Cable SpecificationsTable A-6. IBM Twisted Pair Cable Specifications Shielding Nominal Pairs ImpedanceTwisted Pair Connector Specifications RJ-45 Connector PinoutsPin Connector Pinouts Figure A-1 -Port Module RJ-45 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 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 Activity LEDs, 3-29,3-31 VDE compliance