3Com 5108M-TP manual 3Com Technical Publications

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3.Enter your full Internet e-mail address as the password (for example, jdoe@company.com).

4.Change to the mib or schema directory using the cd /pub/mibs or cd /pub/mibs/schemas command.

5.To view the 3Com MIB, OID, or schema entries, enter the dir command.

❑To pause the display, press [CTRL-S].

❑To continue the display, press [CTRL-Q].

6.Copy the MIB, OID, or schema files to your current directory using the appropriate command (for example, get chipcom.mib).

7.To exit the FTP session, invoke the quit command.

3Com Technical Publications

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Contents ONline Ethernet 10BASE-T Module User’s Guide Ii ONline Ethernet 10BASE-T Module User’s Guide ONline Ethernet 10BASE-T Module User’s Guide Iv ONline Ethernet 10BASE-T Module User’s Guide Contents Installing and Operating the Module Figures Viii ONline Ethernet 10BASE-T Module User’s Guide Tables Page Audience How to Use This GuideStructure of This Guide Document Conventions Convention Indicates ExampleUsr/snm/agents Related Documents Reference Documents 3Com DocumentsPage ONline Ethernet 10BASE-T Module IntroductionIndicators BASE-T Module Faceplate and ONline System Concentrator Dip Switches Interpretation of the 10BASE-T Module LEDsLED Name Color State Indicates Dip Switch SW1 Port Status Dip Switch SW1 Settings and Interpretations Dip Switch SW3 Crossover Mode, Channel Select, SquelchSquelch Mode Switch Dip Switch SW3 Settings for Switches 1Switch Function Factory Switch Setting Default Off Crossover Mode SwitchChannel Select Switch Settings Switch Channel Selection Dip Switch SW3 Settings and Interpretations for Switches 2Related Features Dip Switch SW6 Settings and InterpretationsEnable Channel Check Codes LED State Channel ConfigurationPage Designing and ExpandingtheNetwork Basic Network Rules Understanding the General RulesRule Definition Recommendations/Notes Seven Basic Network RulesCertain LAN devices Seven Basic Network Rules LAN Equivalence LAN Product Equivalent DistancesLAN Product Equivalent Distance meters Fiber Backbone, Twisted Pair To-The-Desk Fiber Backbone, Twisted Pair To-The-Desk Example Sample Configuration Distance Calculation Maximum Link Distance on Twisted Pair Unshielded Twisted Pair High Squelch Low SquelchShielded Twisted Pair High Squelch Low Squelch IBM Type Unshielded Twisted Pair Network Twisted Pair Backbone, Twisted Pair To-The-DeskRedundant Links Redundant Twisted Pair ConfigurationPage Patch Panels Precautionary Procedures Installing and Operating the ModuleInstallation Procedures Unpacking ProceduresInstalling a 10BASE-T Module BASE-T Module Cable Connection Troubleshooting TroubleshootingTroubleshooting With the Port Status LEDs Troubleshooting With the Status LEDsTroubleshooting With the Port Status LEDs Troubleshooting With the Port Status LEDs LED Name Troubleshooting With the Activity LEDsTroubleshooting With the Port Activity LEDs Possible Problem Troubleshooting State SolutionsTechnical Assistance Electrical Specifications ONline Ethernet 10BASE-T Module SpecificationsEnvironmental Specifications Mechanical SpecificationsGeneral Specifications Twisted Pair Connectors Twisted Pair Connectors and CablesTwisted Pair Cables Figure A-1. RJ45 Connector Pin-outsConnecting Twisted Pair Cables Page On-line Technical Support Technical SupportSupport from Your Network Supplier Email Technical SupportWorld Wide Web Site Support from 3Com Returning Products for Repair Accessing the 3Com MIB3Com Technical Publications Page Index MIB, B-4