3Com 5112M-TPLS installation and operation guide Link Integrity, Module Security

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If you set up redundancy between a secure port and a non-secure port (whether on a Security Module port or other module port), a warning message is displayed to terminal management. The warning informs you that this configuration has the potential to automatically cause a change in security when the primary port fails and the secondary port becomes activated.

Link Integrity

In general, enable Link Integrity for the Security Module to conform to the10BASE-T standard. Disable Link Integrity to connect to older equipment that does not conform to the 10BASE-T standard.

Enable Link integrity at both ends or disable Link Integrity at both ends of the connection. If one end of the connection is different, the module with Link Integrity enabled reports a Link Integrity error.

If you enable a port and disable Link Integrity, the Status LED for that port is on for 10 seconds and blinks off for 400 msecs to indicate that Link Integrity is disabled.

Enter the following management command to enable Link Integrity for all ports on the Ethernet module in slot 5.

ONline> set port 5.all link_integrity enable [ENTER]

Module Security

The Module Security DIP switch allows you to enable or disable security for the module. 3Com recommends that you leave this switch in its factory default setting (Off). This setting ensures that in the unlikely event of a concurrent failure of both the master management module and concentrator power, the Security Module ports will power up with ports disabled in a concentrator without network management.

Note: When the Security switch is set to enabled, port mode is set to disabled. Conversely, when the Security switch is set to disabled, port mode is set to enabled.

Installing and Operating the Module 3 - 15

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Contents Page VDE Class B Compliance Restricted Rights Page Contents Installing and Operating the Module Troubleshooting Appendix B Technical Support Figures Page 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 10BASE-T Security Module IntroductionApplication Theory of OperationONline 10BASE-T Security Module Application ONline ManagementPage Designing and Expanding the Network 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 Fiber Fiber Backbone, Twisted Pair To-The-Desk Fiber Backbone, Twisted Pair To-The-Desk Example Sample Configuration Distance Calculation Twisted Pair Backbone, Twisted Pair To-The-Desk Maximum Link Distance on Twisted PairCable Gauge Supports Link Distances Up To Unshielded Twisted Pair Network Patch PanelsRedundant Links Redundant Twisted Pair ConfigurationDesigning and Expanding the Network 2 Page Installing and Operating the Module Step Procedure Reference Precautionary ProceduresQuick Installation Chart Procedures for Completing InstallationInstalling the Module Unpacking Procedures Security Module Dip Switch SW1 Location Setting the Dip SwitchSwitch Network Selection Switch Settings DIP Switch SW1 Network Selection SettingsDIP Switch SW1 Security and Link Integrity Settings Switch Function Factory SettingOff On Installing the Cable Tie-Wrap Kit Installing the ModuleAttaching the Tie-Wrap Bracket to the Module Attaching Cables With 90 Connectors Installing an ONline 10BASE-T Security Module Installing the ModuleONline 10BASE-T Security Module Cable Connection Configuring the Module Port Enable Network AssignmentPort Redundancy Module Security Link IntegritySaving Module Configurations Reverting Module ConfigurationsAutopartition Threshold Show Module Show Module Verbose Show Port Show Port Verbose Showing Module ConfigurationsMonitoring the Front Panel Security Module Faceplate Color State Indicates Name Interpretation of the Security Module LEDsLED State Network Configuration LED and Network VerificationNetwork Check Codes Page Configuring Security Features Quick Reference for Configuring Security Quick Reference for Configuring the Security ModuleProcedure Command SET Security Autolearn Eavesdropping Security Configuring Security FeaturesExample of Eavesdropping Security Intrusion DetectionExample of Intrusion Detection Defining Port Security TypeDefining Port Action on Intrusion Enabling Ports Configuring Autolearning MaskConfiguring Autolearning Autolearn capture done learned 0 addresses total Defining a MAC Address Manually Downloading the Autolearning Database Configuring Security Mode Showing Security Configurations Saving Security ConfigurationsReverting Security Configurations Showing Port Configurations Eavesdrop None ETHERNET1 Showing Security Autolearn Showing Security Intruder List Clearing the MAC Address Table Clearing Security ConfigurationsClearing the Security Intruder List Clearing the Autolearning DatabaseEMM Security Snmp Variables Using 3Com MIB Security VariablesUsing the Security Module Snmp Variables Configuring Security Features 4 Page Troubleshooting TroubleshootingTroubleshooting Using the Port Status LEDs Troubleshooting Using the Status LEDsTroubleshooting Using the Port Status LEDs Troubleshooting Using the Activity LEDs Troubleshooting Using the Activity LEDsLED State Possible Problem Troubleshooting Solutions Technical Assistance Page Electrical Specifications SpecificationsEnvironmental Specifications Mechanical SpecificationsGeneral Specifications Pin Connector and Cable Figure A-1 -Pin Cable Male and Female Connectors Polarity Table A-1 -Pin Cable Pinouts and Port AssignmentsHub Trans Ceiver Port # FunctionPort # Twisted Pair Connectors and CablesHub Trans HubFigure A-2. RJ-45 Connector Pinouts Twisted Pair ConnectorsTwisted Pair Cables 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 Activity LEDs, 3-18,3-20 Quick Reference Chart Security Type Default Setting Index