3Com 5102M-FBP Installing the Module, Enable/disable Disable Module Low Light Detection Not Used

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	Table 3-4.	Dip Switch S2 Settings (Continued)

	Switch	Label	Function	Factory	Switch Setting
	Switch	Label	Function	Default	Off	On
				Default	Off	On

	9	LOL EN	Enable/disable	enable	disable	enable
			module Low
			Light Detection

	10	Not Used

Installing the Module

You do not need to power down the ONline System Concentrator to install the 10BASE-FB Modules. You can insert or remove the module while the concentrator is operating (this is called a hot swap).

To install a 10BASE-FB Module:

1.Do one of the following:

❑If you do not have a management module installed in the concentrator, set the dip switches on the board (if different from the default setting). After you complete the installation procedure, go to the Monitoring the Front Panel section to verify the installation.

❑If you have a management module installed in the concentrator, complete this installation procedure and then configure the module using the commands as described in the Configuring the Module section.

2.Locate a blank slot in the concentrator. If there is no blank slot, remove a blank panel on the concentrator to expose a slot for a 10BASE-FB Module.

3 - 10 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 Document Conventions Convention Indicates ExampleUsr/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 Compatibility With Other Ethernet Fiber Products BASE-FB Module Compatibility3Com 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 Equivalent Fiber Distances of LAN ProductsLAN 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 Fault-Tolerant Configurations Configuring Ports for Fault ToleranceStandard 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 Quick Installation ProceduresStep Procedure Section Title Setting the Dip Switches BASE-FB Module Dip Switch Locations Setting Dip Switch S1 Dip Switch S1 Settings for Switches 1Switch Label Function Factory Switch Setting Default Off Module-Switching Module Dip Switch S1 Settings for Switches 3 toPort-Switching Module Port Channel SelectionSetting Dip Switch S2 Dip Switch S2 SettingsSwitch Label Function Factory Switch Setting Default 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 IndicatesLED State Network Configuration Verifying LED and Network AssignmentsNetwork 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 PowerReceiver Specifications Table A-3. 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 Cables10BASE-FB Connectors Port-Switching Connector TypeTable A-8 BASE-FB Module Part Numbers Technical Support On-line Technical SupportSupport from Your Network Supplier Email Technical SupportWorld 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