Cisco Systems ME 4924-10GE manual Getting Started, Problem Solving to the System Component Level

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Chapter 4 Troubleshooting

Troubleshooting the Hardware Components

Getting Started

When the initial system boot is complete, verify the following:

•Power supplies are supplying power to the system.

•The system fan assembly is operating.

•System software boots successfully.

If all of these conditions are met and the hardware installation is complete, refer to the Software Configuration Guide and the Command Reference publications to troubleshoot the software. However, if any of these conditions are not met, use the procedures in this chapter to isolate and, if possible, resolve the problem.

Problem Solving to the System Component Level

The key to success when troubleshooting the system is to isolate the problem to a specific system component. The first step is to compare what the system is doing to what it should be doing. Because a startup problem can usually be attributed to a single component, it is more efficient to isolate the problem to a subsystem rather than troubleshoot each separate component in the system.

The switch consists of the following subsystems:

•Power supply—Includes the power supply and power supply cooling. (See the “Troubleshooting the Power Supply” section on page 4-6.)

•Fan assembly system—The chassis fan assembly should operate whenever system power is on. Usually, it continues to operate even when the environmental monitor shuts down the system because of an overtemperature or overvoltage condition. (It will shut down for a power supply shutdown.) You should be able to hear the fan assembly to determine whether or not it is operating. If the FAN LED is orange and you determine that the fan assembly is not operating, you should immediately contact a customer service representative. There are no installation adjustments that you can make if the fan assembly does not function properly at the initial startup.

Identifying Startup Problems

When you connect the power cords to the Cisco ME 4924-10GE, follow these steps:

Step 1 Flip the power switches to the on position (AC powered systems only ).

Step 2 Verify that power is available to the power supplied from the site AC or DC source. Flip breakers and fuses if necessary.

Step 3 Listen for the system fan assembly. If you do not immediately hear the system fan assembly begin to operate, see “Troubleshooting the Power Supply” section on page 4-6.

Step 4 If you determine that the power supplies are functioning normally and that the fan assembly is faulty, contact a customer service representative. If the system fan assembly does not function properly at initial startup, there are no installation adjustments that you can make.

Cisco ME 4924-10GE Ethernet Switch Hardware Installation Guide

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OL-10071-01

 

 

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Contents Corporate Headquarters Text Part Number OL-10071-01Page N T E N T S IiiPower Management for the Cisco ME 4924-10GE Switch Understanding Post Results OL-10071-01 Preface AudiencePurpose OrganizationViii ConventionsStatement 1071-Warning Definition Säilytä Nämä Ohjeet Guarde Estas Instruções GEM Disse Anvisninger Xii Xiii Related Publications Obtaining DocumentationCisco.com XivProduct Documentation DVD Ordering Documentation Documentation FeedbackCisco Product Security Overview Xvi Reporting Security Problems in Cisco ProductsProduct Alerts and Field Notices Xvii Obtaining Technical AssistanceCisco Technical Support & Documentation Website Submitting a Service Request Definitions of Service Request SeverityObtaining Additional Publications and Information XviiiXix OL-10071-01 Product Overview FeaturesHardware Features Software Features Optical Support Front Panel DescriptionConsole Port LEDs Management PortSFP Module Ports FAN LED Status LED LED Color or State DescriptionPower Supplies Rear Panel DescriptionEnvironmental Monitoring of the Power Supplies Power Management for the Cisco ME 4924-10GE SwitchPower Management Modes Management OptionsNetwork Configurations OL-10071-01 Switch Installation Preparing for InstallationStatement Installation Guidelines Verifying Package Contents Verifying Switch Operation Connecting a PC or Terminal to the Console PortPowering On the Switch and Running Post Connecting to the Console PortAttaching Brackets to the Switch Rack-Mounting the SwitchPowering Off the Switch and Disconnecting the Console Port Attaching the Cable Guide Installing and Removing SFP ModulesMounting the Switch in a Rack Installing SFP Modules into SFP Module Ports 4shows an SFP module that has a bale-clasp latchInstalling an SFP Module into an SFP Module Port Removing SFP Modules from SFP Module PortsConnecting to an SFP Module Connecting to a Fiber-Optic SFP ModuleConnecting to a Fiber-Optic SFP Module Port Connecting to 1000BASE-T SFP Modules X2 Module Handling Guidelines and InstallationSpecification Description 10-Gigabit Ethernet X2 ModuleInstalling the 10-Gigabit Ethernet X2 Module 10 Installing the 10-Gigabit Ethernet X2 ModuleOL-10071-01 Module Maintenance Guidelines Removing the 10-Gigabit Ethernet X2 ModuleCleaning the Fiber-Optic Connectors Where to Go Next Connecting the Power Supply Grounding RequirementsConnecting AC Power to the Cisco ME 4924-10GE Switch Connecting DC Power to the Cisco ME 4924-10GE Switch DC Power Supply Troubleshooting Understanding Post ResultsDiagnosing Problems Symptom Possible Cause ResolutionTroubleshooting the Hardware Components Gbic-invalid globalGetting Started Problem Solving to the System Component LevelIdentifying Startup Problems LED Readings LED and Color MeaningContacting Customer Service Troubleshooting the Power SupplyTechnical Specifications AC PowerDC Power SafetyConnecting to 1000BASE-T Devices Connector and Cable SpecificationsConnector Specifications Identifying a Crossover Cable Figure B-2Cable and Adapter Specifications Switch Console RJ-45-to-DB-9 Port DTESwitch Console RJ-45-to-DB-25 Port DTE Adapter PinoutsPin Signal Direction Description Console PortInitial Configuration for the Switch Connecting to the SwitchFigure C-1 Connecting a Switch to a PC Starting the Terminal-Emulation SoftwareConnecting to a Power Source Performing the Initial Configuration Entering the Initial Configuration InformationIP Settings Configure an enable password, and press Return Save the running configuration Numerics IN-1IN-2 Post IN-3Startup IN-4
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