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3Com 5112M-TPLS Troubleshooting Using the Status LEDs, Indication, Possible, Problem, Suggestions

Models: 5112M-TPLS

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Troubleshooting Using the Status LEDs

A blinking Port Status indicator (LED) signals a problem with a port or a link connected to a port. Once a port detects a problem, you can further analyze the problem by counting the number of blinks. Table 5-1 provides troubleshooting suggestions for each of the blinking sequences.

Note: The LEDs provide accurate information only when unused ports are disabled.

Table 5-1. Troubleshooting Using the Port Status LEDs

	LED State	Indication	Possible	Troubleshooting
	LED State	Indication	Problem	Suggestions
			Problem	Suggestions

	1 Blink	Link Failure	Cables not	Connect cables.
			connected.

			Cables	Check cables with cable
			broken.	tester. Repair or replace
				cables.

			Link	Make sure that both ends of
			Integrity	the connection have the
			mismatch.	same Link Integrity setting.

	2 Blinks	Port	Faulty cable.	Check cable with cable
		Partitioned		tester. Repair or replace
				cable.

			Network	Reassign users to another
			overloaded.	network to balance the load.

	Off	Ports	Ports	Enable ports.
		Disabled	disabled.

			Security	Check the Controller Module
			Module not	Power LEDs.
			powered.

5 - 2 ONline 10BASE-T Security Module Installation and Operation Guide

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3Com 5112M-TPLS Troubleshooting Using the Status LEDs, Indication, Possible, Problem, Suggestions, LED State

Contents

ONline 10BASE-T Security Module Installation and Operation Guide Document Number Printed February Model Number 5112M-TPLS3Com Corporation 118 Turnpike Road Southborough, MA U.S.A 508 FAX 508 ii ONline 10BASE-T Security Module Installation and Operation Guide Federal Communications Commission NoticeCanadian Emissions Requirements VDE Class B ComplianceONline 10BASE-T Security Module Installation and Operation Guide Restricted Rightsiv ONline 10BASE-T Security Module Installation and Operation Guide How to Use This Guide Chapter 1 - IntroductionChapter 2 - Designing and Expanding the Network ContentsChapter 3 - Installing and Operating the Module Chapter 4 - Configuring Security Featuresvi ONline 10BASE-T Security Module Installation and Operation Guide Precautionary Procedures Quick Installation ChartChapter 5 - Troubleshooting Appendix A - SpecificationsONline 10BASE-T Security Module Installation and Operation Guide viii ONline 10BASE-T Security Module Installation and Operation Guide Appendix B - Technical SupportIndex Figures ONline 10BASE-T Security Module Installation and Operation Guidex ONline 10BASE-T Security Module Installation and Operation Guide Tables ONline 10BASE-T Security Module Installation and Operation GuidePage How to Use This Guide AudienceONline 10BASE-T Security Module Installation and Operation Guide xiv ONline 10BASE-T Security Module Installation and Operation Guide Structure of This GuideDocument Conventions ConventionIndicates Examplexvi ONline 10BASE-T Security Module Installation and Operation Guide Related DocumentsA Caution. A A Warning. A6-Slot ONline System Concentrator Installation and Operation 3Com DocumentsReference Documents ONline 10BASE-T Security Module Installation and Operation GuidePage 1 Introduction The ONline 10BASE-T Security ModuleIntroduction 1 Theory of Operation ApplicationONline Management Figure 1-1. ONline 10BASE-T Security Module ApplicationIntroduction 1 Page Designing and Expanding the Network 2 2 Designing and Expanding the NetworkUnderstanding the General Rules Basic Network RulesRule DefinitionRecommendations/Notes Table 2-1. Seven Basic Network RulesMany LAN products delay the signal every microsecond delay shrinks theTable 2-1. Seven Basic Network Rules Continued RuleRule DefinitionRecommendations/Notes The fiber link distancesLAN Equivalence LAN ProductEquivalent Fiber Table 2-2. LAN Product Equivalent DistancesFiber Backbone, Twisted Pair To-The-Desk Table 2-2. LAN Product Equivalent Distances ContinuedLAN Product Equivalent FiberFiber Backbone, Twisted Pair To-The-Desk Example Figure 2-1. Sample Configuration Distance Calculation Designing and Expanding the Network 2Twisted Pair Backbone, Twisted Pair To-The-Desk Cable GaugeSupports Link Distances Up To Table 2-3. Maximum Link Distance on Twisted PairPatch Panels Figure 2-2. Unshielded Twisted Pair NetworkDesigning and Expanding the Network 2 Redundant Links Figure 2-3. Redundant Twisted Pair ConfigurationTo set link redundancy between two Security Modules Designing and Expanding the Network 2Page 3 Installing and Operating the Module Installing and Operating the Module 3Precautionary Procedures Quick Installation ChartProcedure Unpacking ProceduresInstalling the Module Configuring the ModuleLED and Network VerificationUnpacking Procedures Setting the Dip Switch Figure 3-1. Security Module Dip Switch SW1 LocationInstalling and Operating the Module 3 Switch Switch SettingsNetwork Selection Table 3-2. DIP Switch SW1 Network Selection SettingsSetting FunctionFactory Off OnInstalling the Module Installing the Cable Tie-Wrap KitTo install the tie-wrap kit Installing and Operating the Module 3Figure 3-2. Attaching the Tie-Wrap Bracket to the Module 3. Insert the tie-wrap through the opening on the tie-wrap bracketFigure 3-3. Attaching Cables With 90 Connectors Caution Do not fasten the tie-wrap around the module ejectorsInstalling the Module Figure 3-4. Installing an ONline 10BASE-T Security ModuleInstalling and Operating the Module 3 Figure 3-5. ONline 10BASE-T Security Module Cable Connection Configuring the Module Installing and Operating the Module 3Port Enable Network AssignmentPort Redundancy ONline set port 3.all mode enable ENTERLink Integrity Module SecurityInstalling and Operating the Module 3 ONline set port 5.all linkintegrity enable ENTERSaving Module Configurations Reverting Module ConfigurationsAutopartition Threshold Showing Module Configurations Installing and Operating the Module 3Monitoring the Front Panel Installing and Operating the Module 3 Figure 3-6. Security Module FaceplateColor StateName Table 3-4. Interpretation of the Security Module LEDsNetwork Configuration LED and Network VerificationLED State Installing and Operating the Module 3Page 4 Configuring Security Features Configuring Security Features 4Quick Reference for Configuring Security CommandTable 4-1. Quick Reference for Configuring the Security Module ProcedureProcedure CommandConfiguring Security Features 4. Initiate Autolearning toConfiguring Security Features Eavesdropping SecurityIntrusion Detection Configuring Security Features 4Figure 4-1. Example of Eavesdropping Security Defining Port Security Type Figure 4-2. Example of Intrusion DetectionDefining Port Action on Intrusion Configuring Security FeaturesConfiguring Autolearning Mask Enabling PortsONline set security autolearn 3.all mask disable ENTER Configuring Autolearning Configuring Security Features 46. Upon completion of Autolearning, the following message is displayed Defining a MAC Address Manually Configuring Security Features 4ONline set security port 3.1 macaddress 08-54-6f-01-32-08 ENTER ONline set security autolearn 3.1 macaddress 08-54-6f-01-32-08 ENTERDownloading the Autolearning Database ONline set security autolearn 3.1 download ENTERNote overwriting existing addresses in the Security database Autolearn download done downloaded y addresses totalConfiguring Security Mode Configuring Security Features 4Showing Security Configurations Saving Security ConfigurationsReverting Security Configurations Showing Port Configurations Configuring Security Features 4Page Showing Security Autolearn Configuring Security Features 4Showing Security Intruder List Clearing Security Configurations Clearing the MAC Address TableConfiguring Security Features 4 Clearing the Autolearning Database Clearing the Security Intruder ListONline clear security autolearn 3.1 macaddress all ENTER ONline clear security intruderlist ENTER Intruder List clearedUsing 3Com MIB Security Variables EMM Security SNMP VariablesConfiguring Security Features 4 Using the Security Module SNMP Variables Configuring Security Features 4 Page 5 Troubleshooting TroubleshootingTroubleshooting 5 Troubleshooting Using the Status LEDs TroubleshootingProblem IndicationTroubleshooting ProblemTroubleshooting 5 LED StateTroubleshooting Using the Activity LEDs Possible ProblemTroubleshooting Solutions Table 5-2. Troubleshooting Using the Activity LEDsTechnical Assistance Troubleshooting 5Page A Specifications Electrical SpecificationsSpecifications A Environmental Specifications Mechanical SpecificationsGeneral Specifications 50-Pin Connector and Cable Specifications AFigure A-1. 50-Pin Cable Male and Female Connectors Trans ceiverPort # PolarityTwisted Pair Connectors and Cables TransTrans Port #Twisted Pair Connectors Figure A-2. RJ-45 Connector PinoutsSpecifications A Twisted Pair Cables B Technical Support On-line Technical SupportTechnical Support B Support from Your Network Supplier Email Technical SupportWorld Wide Web Site Support from 3Com Technical Support BAccessing the 3Com MIB Returning Products for Repair3Com Technical Publications Technical Support BPage Numerics IndexIndex 2 Index Index 4 Index Unpacking Procedures Unshielded Twisted Pair Cable Unshielded Twisted Pair Network Sample ConfigurationUploading Security Configurations Wiring Closet, A-8