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Cisco Nexus 7000 Series Troubleshooting Manual
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Cisco Nexus 7000 Series Troubleshooting Manual

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Troubleshooting
This 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-OS
Troubleshooting Guide. If you cannot isolate a system problem, contact the Cisco Technical Assistance Center
(TAC).
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Getting Started

Start the Cisco Nexus 7000 Series switch by turning on the power at the power supply units to send power to
the system fans, supervisor module, fabric modules, and I/O modules. During the startup phase, the STATUS
LEDs 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 you
need to troubleshoot for system problems.
The key to troubleshooting the system is to isolate a problem to a specific system component. First, you
compare what the system is doing with what it should be doing. Look at the chassis LEDs to see if there are
any critical problems detected with the system components. Green chassis LEDs indicate that all components
of a type are operational while amber LEDs indicate that at least one component of a type has a critical problem
that requires troubleshooting.
For a listing of the system LEDs and the conditions that they indicate, see
Less critical problems, such as minor overtemperature conditions, are not indicated by the chassis LEDs. To
find 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:
Getting Started, on page 1
Table D-1 on page D-1
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Troubleshooting
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Summary of Contents for Cisco Nexus 7000 Series

  • Page 1: Table Of Contents

    Contacting Customer Service, on page 10 Getting Started Start the Cisco Nexus 7000 Series switch by turning on the power at the power supply units to send power to the system fans, supervisor module, fabric modules, and I/O modules. During the startup phase, the STATUS LEDs on the supervisor and I/O modules are amber to indicate that the initialization process is in progress.

  • Page 2: Troubleshooting The Fan Trays

    3. Make sure that the fan tray is properly seated in the chassis by following these steps: 4. Call Cisco TAC and describe the conditions that you are seeing with the fan tray. See the Contacting...
  • Page 3 ) and plugging its power cords into the same AC source. If the Input and Output LEDs turn green on the replacement power supply unit, contact Cisco TAC (see the Contacting Customer Service, on page 10) to replace the defective power supply unit.

  • Page 4: Troubleshooting A Dc Power Supply Unit

    Troubleshooting Troubleshooting a DC Power Supply Unit the Input and Output LEDs turn green on the replacement power supply unit, contact Cisco TAC (see the Contacting Customer Service, on page 10) to replace the defective power supply unit. If you cannot determine the problem with the power supply or determine which power supply unit has the problem, contact TAC.
  • Page 5 Troubleshooting Troubleshooting a DC Power Supply Unit Step 2 If the Output LED is not lit, verify that the power switch on the power supply unit is turned to ON. If not, turn it to ON and verify that the Output LED turns on. Step 3 If the required Input LEDs are not lit, test the power connections as follows: a) Turn the power switch on the power supply unit to standby (STBY or 0).

  • Page 6: Troubleshooting An Hvac/Hvdc Power Supply Unit

    Troubleshooting Troubleshooting an HVAC/HVDC Power Supply Unit e) Turn the power switch to ON (or 1). f) Verify that the Output LED turns on. Step 7 If the Output LED is still not on, verify that the power supply unit is functional by replacing it with another power supply (see the “Replacing a DC Power Supply Unit During Operations”...

  • Page 7: Troubleshooting The Supervisor Modules

    Troubleshooting Troubleshooting the Supervisor Modules Step 5 Verify that the power supply unit is functional by replacing it with another power supply and plugging its power cords into the same power source. If you cannot determine the problem with the power supply or determine which power supply unit has the problem, contact TAC.

  • Page 8: Troubleshooting The Fabric Modules

    • The STATUS LED on the fabric module is red. Note Fabric modules are included with the Cisco Nexus 7009, 7010, and 7018 chassis but not with the Cisco Nexus 7004 chassis. When you start up the switch or install a new fabric module, the STATUS LED on the module is amber while the module initializes.

  • Page 9: Troubleshooting The I/O Modules

    Troubleshooting Troubleshooting the I/O Modules Step 3 Make sure that the fabric module is properly seated in the chassis as follows: a) Loosen the captive screws on the fabric module until they are no longer in the chassis. b) Press the eject buttons on either end of the module and simultaneously rotate out both ejector levers until the module is unseated from the midplane.

  • Page 10: Contacting Customer Service

    • Brief explanation of the steps that you have already taken to isolate and resolve the problem Note If you have CLI access, enter the show sprom all command to display the backplane contents. To contact TAC, go to http://tools.cisco.com/ServiceRequestTool/create/launch.do . Troubleshooting...

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