3Com 5104M-FB1, 5102M-FBP, 510M-FBP installation and operation guide Enabling Ports

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When an ONline management module is installed in a concentrator, all of the dip switch settings on the 10BASE-FL Module are overridden.

When you first install the module:

1.The network (channel) defaults to isolated mode. The ports are automatically disabled so that unapproved users cannot be added. Therefore, you must enable the ports you wish to use and set the ports to the appropriate Ethernet network through the management commands.

2.All other module settings retain the same default values as the dip switch default values. Therefore, you only need to changes these values through management if you do not want the default values.

This section describes the management commands to set these features. For additional information on the available network management features, refer to:

The appropriate ONline management module installation and operation guide

ONline Management Commands Guide

Enabling Ports

You can enable or disable each of the four ports on the module. When a port is enabled, it can transmit data onto and receive data from the network to which the module is assigned. Disable all unused ports on the 10BASE-FB Modules to prevent the Status indicators from flashing a No Light condition.

To enable or disable a specific port, use the following management command:

SET PORT {slot.port} MODE {enable}

{slot.all} {disable}

3 - 14 ONline Ethernet 10BASE-FB Module Installation and Operation Guide

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Contents Page VDE Class B Compliance Restricted Rights Page Contents Installing and Operating the Module Appendix a Specifications Page Figures Page Tables Page How to Use This Guide AudienceStructure of This Guide Convention Indicates Example Document ConventionsUsr/snm/agents Related Documents 3Com DocumentsSlot ONline System Concentrator Installation and Operation Reference DocumentsPage Introduction 10BASE-FB Module Descriptions Introduction 1 10BASE-FB Compliance Theory of OperationBASE-FB Module Connections BASE-FB Module Compatibility Compatibility With Other Ethernet Fiber Products3Com Product Part Number Designing and Expanding the Network Basic Network Rules Rules for Configuring a NetworkUnderstanding the General Rules Rule Definition Recommendations/NotesDefinition Recommendations/Notes Is actually equal to 1.1 meters Equivalent Fiber Distances of LAN Products Equivalent Fiber DistancesLAN Product Equivalent Fiber Determining Maximum Fiber Link Distances Calculating Maximum Link Distance Determining Link BudgetLink Link Loss ONline 10BASE-FB Module Optical Power Budget Normal PowerPower DBmCable Size Used Transmit Receive Optical Power Micron ONline 10BASE-FB Module Optical Power Budget High PowerBASE-FB Optical Power Budget ONline toAttenuation Connector and Splice Insertion Loss Typical Fiber Loss CharacteristicsExample 1700 Meter Fiber Link With Mechanical Splice Meter Fiber Link With Mechanical SpliceExample 2000 Meter Fiber Link Through Two Patch Panels Meter Fiber Link Through Two Patch PanelsChoosing a Network Backbone Cabling Structure Star Configuration Star-Wiring ConfigurationSerial Configuration Serial Configuration Using 10BASE-FB Modules10BASE-FB Module Configurations Fiber Backbone, Fiber-to-the-DeskAll-Fiber Network Example Network With 3 Concentrators Network With 3 ConcentratorsNetwork Configured With 8 Concentrators Example Network with 8 ConcentratorsFiber Equivalent Distances Between Transceivers Example Sample Configuration Distance Calculation Fiber Backbone, Unshielded Twisted Pair to-the-DeskSample Configuration Distance Calculation Example Connecting a Thin Ethernet 10BASE2 Segment Fiber Backbone, Coaxial ConnectionDesigning and Expanding the Network 2 Configuring Ports for Fault Tolerance Fault-Tolerant ConfigurationsStandard Redundant Configuration In this configuration Setting Redundancy 10. Redundant Fiber Backbone Configuration Implementing Total Backbone Fault Tolerance 11. Total Backbone Fault-Tolerant Configuration 12. Fiber Network With 3 Concentrators Page Installing and Operating the Module Precautionary Procedures Unpacking Procedures Quick Installation Procedures Quick InstallationStep Procedure Section Title Setting the Dip Switches BASE-FB Module Dip Switch Locations Dip Switch S1 Settings for Switches 1 Setting Dip Switch S1Switch Label Function Factory Switch Setting Default Off Module-Switching Module Dip Switch S1 Settings for Switches 3 toPort-Switching Module Port Channel SelectionDip Switch S2 Settings Setting Dip Switch S2Switch Label Function Factory Switch Setting Default Installing the Module Enable/disable Disable Module Low Light Detection Not Used Installing the 10BASE-FB Module BASE-FB Module Connection Configuring the Module Enabling Ports Selecting a Network You can enable port redundancy in one of the following ways Enabling Port RedundancyEnabling Optical Power Enabling Low Light WarningShowing Module Configuration Saving Module ConfigurationMonitoring the Front Panel Page Interpreting the 10BASE-FB Module LEDs LED Name Color State IndicatesVerifying LED and Network Assignments LED State Network ConfigurationNetwork Check Codes Troubleshooting Troubleshooting Using the Port Activity LEDs Troubleshooting Using the Port Activity LEDsPossible Cause Corrective Action Troubleshooting Using the Port Status LEDs Troubleshooting Using the Port Status LEDsLED State Indication Possible Cause Corrective Action Troubleshooting Using the Port Status LEDs Troubleshooting Using the Port Status LEDs 10BASE-FL Technical Assistance Page Specifications General Specifications Table A-1. General SpecificationsTable A-2. Transmit Power Optical SpecificationsTransmitter Specifications Cable Type Normal Power High PowerTable A-3. Receiver Specifications Receiver SpecificationsSupported Fiber Optic Cables Table A-5. Power Requirements Power RequirementsTable A-4. Fiber Optic Interface Specifications Fiber Optic InterfaceTable A-6. Electrical Specifications Environmental SpecificationsMechanical Specifications Table A-7. Mechanical Specifications10BASE-FB Cable and Connector Specifications 10BASE-FB CablesPort-Switching Connector Type 10BASE-FB ConnectorsTable A-8 BASE-FB Module Part Numbers Technical Support On-line Technical SupportEmail Technical Support Support from Your Network SupplierWorld Wide Web Site Support from 3Com Accessing the 3Com MIB Returning Products for Repair3Com Technical Publications Page Index Installing Link Budget Redundant Link, 3-16Redundancy LED Unpacking Procedures, 3-3Unshielded Twisted Pair Cable