Cisco Nexus 7000 Series Troubleshooting Manual

Also see for Nexus 7000 Series: Switch Guide Installation instructions Replacement instructions Manual Reference guide

TroubleshootingThis chapter describes how to troubleshoot Cisco Nexus 7000 Series hardware problems.This chapter includes the following sections:If your system has problems related to the Cisco NX-OS operating system, see the Cisco NX-OSTroubleshooting Guide. If you cannot isolate a system problem, contact the Cisco Technical Assistance Center(TAC).• Getting Started, on page 1• Troubleshooting the Fan Trays, on page 2• Troubleshooting an AC Power Supply Unit, on page 2• Troubleshooting a DC Power Supply Unit, on page 4• Troubleshooting an HVAC/HVDC Power Supply Unit, on page 6• Troubleshooting the Supervisor Modules, on page 7• Troubleshooting the Fabric Modules, on page 8• Troubleshooting the I/O Modules, on page 9• Contacting Customer Service, on page 10Getting StartedStart the Cisco Nexus 7000 Series switch by turning on the power at the power supply units to send power tothe system fans, supervisor module, fabric modules, and I/O modules. During the startup phase, the STATUSLEDs on the supervisor and I/O modules are amber to indicate that the initialization process is in progress.When the system is operational, the component LEDs indicate that either the system is operational or youneed to troubleshoot for system problems.The key to troubleshooting the system is to isolate a problem to a specific system component. First, youcompare what the system is doing with what it should be doing. Look at the chassis LEDs to see if there areany critical problems detected with the system components. Green chassis LEDs indicate that all componentsof a type are operational while amber LEDs indicate that at least one component of a type has a critical problemthat requires troubleshooting.For a listing of the system LEDs and the conditions that they indicate, see Table D-1 on page D-1 .Less critical problems, such as minor overtemperature conditions, are not indicated by the chassis LEDs. Tofind those problems, you must look for amber STATUS LEDs on the system modules.Depending on the type of component that needs troubleshooting, see one of the following topics:Troubleshooting1