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Cisco Systems OL-6157-01 manual System LED is amber, and all port LEDs are, Corrupted software

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System LED is amber,

Chapter 3 Troubleshooting

Diagnosing Common Problems

Table 3-3 Corrupted Software Problems and Their Solutions

Symptom	Possible Cause	Resolution

System LED is amber,	Corrupted software.	Attach a monitor to the serial port to display
and all port LEDs are		the switch boot loader.
off.
		For more information, see the switch
		software configuration guide.

System LED is amber.	Nonfatal or fatal POST	Use the show post privileged EXEC
	error detected.	command to see which POST test failed.
		POST failures are usually fatal. Contact
		your Cisco representative if your switch
		does not pass POST.

Catalyst 2940 Switch Hardware Installation Guide

	OL-6157-01	3-5

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Cisco Systems OL-6157-01 manual System LED is amber, and all port LEDs are, Corrupted software

Contents

November Catalyst 2940 Switch Hardware Installation GuideCisco Systems, Inc 170 West Tasman Drive San Jose, CA 800 553-NETS Fax 408Turn the television or radio antenna until the interference stops Catalyst 2940 Switch Hardware Installation GuidePreface C O N T E N T SPurpose TAC Case Priority DefinitionsWhere to Go Next InstallationTroubleshooting Understanding POST Results Diagnosing Common ProblemsAccessing the CLI Through the Console Port D-2 Configuring the Switch with the CLI-Based Setup Program D-1IP Settings D-5 Where to Go Next D-8OL-6157-01 Contents Catalyst 2940 Hardware Installation GuideAudience PrefacePurpose ConventionsWarning IMPORTANT SAFETY INSTRUCTIONS viiiAvvertenza IMPORTANTI ISTRUZIONI SULLA SICUREZZA OL-6157-01 Preface Conventions Catalyst 2940 Switch Hardware Installation GuideEste símbolo de aviso significa perigo. Você se encontra em uma situação em que há risco de lesões corporais. Antes de trabalhar com qualquer equipamento, esteja ciente dos riscos que envolvem os circuitos elétricos e familiarize-se com as práticas padrão de prevenção de acidentes. Use o número da declaração fornecido ao final de cada aviso para localizar sua tradução nos avisos de segurança traduzidos que acompanham o dispositivo OL-6157-01 Preface Conventions Catalyst 2940 Switch Hardware Installation Guidexiii Related PublicationsCisco.com Obtaining DocumentationDocumentation CD-ROM Ordering DocumentationDocumentation Feedback Obtaining Technical AssistanceCisco TAC Website Opening a TAC CaseTAC Case Priority Definitions Obtaining Additional Publications and InformationInternet Protocol Journal is a quarterly journal published by Cisco Systems for engineering professionals involved in designing, developing, and operating public and private internets and intranets. You can access the Internet Protocol Journal at this URL xviiCatalyst 2940 Switch Hardware Installation Guide xviiiPreface Obtaining Additional Publications and Information OL-6157-01Features Setting up the SwitchSetting up the Switch, page Features, page Setup Program.”Front-Panel Description Figure 1-1 and Figure 1-2 show the switches10/100 Ports Port Numbering10/100/1000 Port Port or Slot typeSFP Module Slot 100BASE-FX PortType Cisco Part NumberTable 1-3 Cabling Stipulations for Fiber-Optic SFP Modules SFP ModulesLEDs Cable GuardSTAT, DPLX, SPD, and Port LEDs SYST LEDMode LED Port ModeColor Port ModeMeaning Table 1-6 Meaning of Port LED Colors in Different ModesRear-Panel Description Power Connector1-10 Console PortSecurity Slots 1-11 Management OptionsCatalyst 2940 Switch Hardware Installation Guide 1-12Chapter 1 Overview Management Options OL-6157-01Preparing for Installation InstallationPreparing for Installation, page Verifying Switch Operation, page Installing the Switch, page Connecting to an SFP Module, pageWarning Class 1 laser product. Statement Verifying Package Contents Installation GuidelinesTable 2-1 MT-RJ Patch Cables for 100BASE-FX Connections Verifying Switch OperationInstalling the Switch on a Desk Without Mounting Screws Installing the SwitchInstalling the Switch on a Desk With Mounting Screws “Installing the Switch Under a Desk” section on pageScrew template Figure 2-2 Mounting the Switch on Top of a Desk Installing the Switch Under a DeskFigure 2-3 Installing the Mounting Screws Under a Desk Desktop Installing the Switch on a WallSlides on this way ScrewsTHIS 2-10SIDE CABLEFigure 2-6 Installing the Switch On a Wall 2-11Chapter 2 Installation Installing the Switch Catalyst 2940 Switch Hardware Installation Guide2-12 Connecting to an SFP ModuleInstalling the Switch Magnet Mount Follow these steps to connect a fiber-optic cable to an SFP module 2-132-14 Connecting to 10/100 Ports and the 10/100/1000 PortFigure 2-10 Connecting to a 100BASE-FX Port Connecting to the 100BASE-FX Port2-15 Figure 2-11 Connecting to an SFP Module Port 2-16Connecting to an SFP Module 2-17 Where to Go NextWhere to Go Next Catalyst 2940 Switch Hardware Installation Guide 2-18Installation ChapterDiagnosing Common Problems TroubleshootingUnderstanding POST Results, page Diagnosing Common Problems, page Understanding POST ResultsNote See the “Connecting to Specifications” section onNo connectivity to 10/100 ports Incorrect or bad cableerror-disabled state after SFP Switch placed inerrdisable recovery cause recovery commandPoor performance or excessive errorsCabling distance exceeded Bad adapter in attachedand all port LEDs are System LED is amberCorrupted software System LED is amberOL-6157-01 Chapter 3 Troubleshooting Diagnosing Common ProblemsCatalyst 2940 Switch Hardware Installation Guide A P P E N D I X A Technical SpecificationsTable A-3 Catalyst 2940 Switch Agency Approvals Appendix A Technical Specifications Table A-3 Catalyst 2940 Switch Agency Approvals continuedCatalyst 2940 Switch Hardware Installation Guide EN61000-4-11/IEC1000-4-11 Immunity to VoltageOL-6157-01 Appendix A Technical SpecificationsCatalyst 2940 Switch Hardware Installation Guide Connector Specifications Connectors and CablesA P P E N D I X B 10/100 Ports, page B-1 10/100/1000 Ports, page B-3Figure B-2 10/100 RJ-45 Pinouts 10/100/1000 Ports Connecting to 10BASE-T and 100BASE-TX DevicesConnecting to 1000BASE-T Devices Figure B-5 SFP Module Connector Figure B-4 MT-RJ Connector100BASE-FX Port SFP Module SlotTwo Twisted-Pair Cable Pinouts Cable and Adapter SpecificationsTwo Twisted-Pair Cable Pinouts, page B-5 Four Twisted-Pair Cable Pinouts for 10/100 Ports, page B-6Four Twisted-Pair Cable Pinouts for 10/100 Ports Four Twisted-Pair Cable Pinouts for 1000BASE-T Ports Cable and Adapter Pinouts Connecting to a PCConnecting to a Terminal Identifying a Rollover Cable Appendix B Connectors and Cables Cable and Adapter Specifications B-10Catalyst 2940 Switch Hardware Installation Guide OL-6157-01Methods for Accessing the CLI Configuring the Switch with the CLI-Based Setup ProgramMethods for Accessing the CLI, page C-1 Connecting to a Power Source, page C-3Taking Out What You Need Accessing the CLI Through the Console PortConnecting to the Console Port Connecting to a Power SourceStarting the Terminal Emulation Software IP Settings Entering the Initial Configuration InformationCompleting the Setup Program Page Where to Go Next IN-1 NumericsI N D E IN-2 IN-3 specifications A-1 to A-2 software switch managementspeed LED stacking the chassis warningTelnet, and accessing the CLI technical specifications A-1 to A-2temperature terminal, connecting to a switch B-8 to B-9OL-6157-01 IN-6Index Catalyst 2940 Switch Hardware Installation Guide