3Com 510M-FBP, 5102M-FBP, 5104M-FB1 Returning Products for Repair, Accessing the 3Com MIB

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For access to customer service for all 3Com products, call (800) 876-3266.

You can also contact the Integrated Systems Division (ISD) on the Internet by using the e-mail address techsupp@chipcom.com.

Returning Products for Repair

A product sent directly to 3Com for repair must first be assigned a Return Materials Authorization (RMA) number. A product sent to 3Com without an RMA number will be returned to the sender unopened, at the sender’s expense.

To obtain an RMA number for Integrated Systems Division products (formerly Chipcom), use the following numbers.

Country	Telephone Number	Fax Number

U.S. and Canada	(800) 724-2447	(508) 787-3400
Europe	(44) (1442) 275860	No Fax
Asia Pacific	(508) 787-5296	(508) 787-3400

Accessing the 3Com MIB

The 3Com Management Information Base (MIB) for the Integrated Systems Division describes commands that enable you to manage 3Com SNMP-based products. The MIB is available over the Internet on an anonymous FTP server. Updates to these MIBs are released as new 3Com products are introduced.

To access Internet versions:

1.FTP to ftp.chipcom.com (151.104.9.65).

2.Enter the login name anonymous.

B - 4 ONline Ethernet 10BASE-FB Module Installation 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 Usr/snm/agents Document ConventionsConvention Indicates Example 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 3Com Product Part Number Compatibility With Other Ethernet Fiber ProductsBASE-FB Module Compatibility 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 LAN Product Equivalent Fiber Equivalent Fiber DistancesEquivalent Fiber Distances of LAN Products 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 Standard Redundant Configuration In this configuration Fault-Tolerant ConfigurationsConfiguring Ports for Fault Tolerance 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 Step Procedure Section Title Quick InstallationQuick Installation Procedures Setting the Dip Switches BASE-FB Module Dip Switch Locations Switch Label Function Factory Switch Setting Default Off Setting Dip Switch S1Dip Switch S1 Settings for Switches 1 Module-Switching Module Dip Switch S1 Settings for Switches 3 toPort-Switching Module Port Channel SelectionSwitch Label Function Factory Switch Setting Default Setting Dip Switch S2Dip Switch S2 Settings Installing the Module Enable/disable Disable Module Low Light Detection Not UsedInstalling 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 IndicatesNetwork Check Codes LED State Network ConfigurationVerifying LED and Network Assignments Troubleshooting Possible Cause Corrective Action Troubleshooting Using the Port Activity LEDsTroubleshooting Using the Port Activity LEDs LED State Indication Possible Cause Corrective Action Troubleshooting Using the Port Status LEDsTroubleshooting Using the Port Status LEDs 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 PowerSupported Fiber Optic Cables Receiver SpecificationsTable A-3. Receiver Specifications 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 CablesTable A-8 BASE-FB Module Part Numbers 10BASE-FB ConnectorsPort-Switching Connector Type 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 Installing Link Budget Redundant Link, 3-16Redundancy LED Unpacking Procedures, 3-3Unshielded Twisted Pair Cable