3Com 5104M-FB1, 5102M-FBP, 510M-FBP installation and operation guide Setting the Dip Switches

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Setting the Dip Switches

The 10BASE-FB Modules have two 10-position dip switches (S1 and S2) located on the board. Figure 3-1 shows the dip switches on the 10BASE-FB Modules and the factory settings.

❑Dip switch S1 on the Port-Switching Module differs from dip switch S1 on the Module-Switching Module. Figure 3-1 contains examples of both dip switches.

❑Dip switch S2 is identical for both the Port-Switching Module and Module-Switching Module except the Module-Switching Module does not provide High power optics.

You may need to reconfigure one or more of these switches depending on your configuration requirements.

The dip switch settings for the 10BASE-FB Modules are ignored if an ONline management module is installed in the concentrator. For this reason, use the management commands (rather than the dip switches) to configure the 10BASE-FB Modules. If you have an installed management module, install the 10BASE-FB Module first and then refer to the Configuring the Module section in this chapter for more information.

This section describes:

❑Setting Dip Switch S1

❑Setting Dip Switch S2

Installing and Operating the Module 3 - 5

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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 Audience How to Use This GuideStructure of This Guide Convention Indicates Example Document ConventionsUsr/snm/agents 3Com Documents Related DocumentsReference Documents Slot ONline System Concentrator Installation and OperationPage Introduction 10BASE-FB Module Descriptions Introduction 1 Theory of Operation 10BASE-FB ComplianceBASE-FB Module Connections BASE-FB Module Compatibility Compatibility With Other Ethernet Fiber Products3Com Product Part Number Designing and Expanding the Network Understanding the General Rules Rules for Configuring a NetworkBasic Network 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 Determining Link Budget Calculating Maximum Link DistancePower ONline 10BASE-FB Module Optical Power Budget Normal PowerLink Link Loss DBmBASE-FB Optical Power Budget ONline 10BASE-FB Module Optical Power Budget High PowerCable Size Used Transmit Receive Optical Power Micron ONline toAttenuation Typical Fiber Loss Characteristics Connector and Splice Insertion LossMeter Fiber Link With Mechanical Splice Example 1700 Meter Fiber Link With Mechanical SpliceMeter Fiber Link Through Two Patch Panels Example 2000 Meter Fiber Link Through Two Patch PanelsChoosing a Network Backbone Cabling Structure Star-Wiring Configuration Star ConfigurationSerial Configuration Using 10BASE-FB Modules Serial ConfigurationFiber Backbone, Fiber-to-the-Desk 10BASE-FB Module ConfigurationsAll-Fiber Network Network With 3 Concentrators Example Network With 3 ConcentratorsExample Network with 8 Concentrators Network Configured With 8 ConcentratorsFiber Equivalent Distances Between Transceivers Fiber Backbone, Unshielded Twisted Pair to-the-Desk Example Sample Configuration Distance CalculationSample Configuration Distance Calculation Fiber Backbone, Coaxial Connection Example Connecting a Thin Ethernet 10BASE2 SegmentDesigning 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 Port-Switching Module Port Dip Switch S1 Settings for Switches 3 toModule-Switching Module Channel SelectionDip Switch S2 Settings Setting Dip Switch S2Switch Label Function Factory Switch Setting Default Enable/disable Disable Module Low Light Detection Not Used Installing the ModuleInstalling the 10BASE-FB Module BASE-FB Module Connection Configuring the Module Enabling Ports Selecting a Network Enabling Port Redundancy You can enable port redundancy in one of the following waysEnabling Low Light Warning Enabling Optical PowerSaving Module Configuration Showing Module ConfigurationMonitoring the Front Panel Page LED Name Color State Indicates Interpreting the 10BASE-FB Module LEDsVerifying 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 Table A-1. General Specifications General SpecificationsTransmitter Specifications Optical SpecificationsTable A-2. Transmit Power Cable Type Normal Power High PowerTable A-3. Receiver Specifications Receiver SpecificationsSupported Fiber Optic Cables Table A-4. Fiber Optic Interface Specifications Power RequirementsTable A-5. Power Requirements Fiber Optic InterfaceMechanical Specifications Environmental SpecificationsTable A-6. Electrical Specifications Table A-7. Mechanical Specifications10BASE-FB Cables 10BASE-FB Cable and Connector SpecificationsPort-Switching Connector Type 10BASE-FB ConnectorsTable A-8 BASE-FB Module Part Numbers On-line Technical Support Technical SupportEmail Technical Support Support from Your Network SupplierWorld Wide Web Site Support from 3Com Returning Products for Repair Accessing the 3Com MIB3Com Technical Publications Page Index Installing Link Budget Redundant Link, 3-16Redundancy LED Unpacking Procedures, 3-3Unshielded Twisted Pair Cable