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Cisco Bug: CSCta83751 - After Fan Tray Replacement, Nexus Continues to Log Fan Failures

Last Modified

Nov 22, 2018

Products (1)

  • Cisco Nexus 7000 Series Switches

Known Affected Releases

4.2(1) 5.0(0.243)

Description (partial)


After replacing a faulty fan tray on a Nexus 7000, the failed status is not cleared, and the diagnostics continue to report the failure.


%DEVICE_TEST-2-FAN_MOD_FAIL: Module 5 has failed test SystemMgmtBus 20 times on System Mgmt Bus for chassis FAN instance 2 due to error Device fan is found to be bad error number 0x00000002

%MODULE-4-MOD_WARNING: Module 5 (serial: XXX123YYYY) reported warning due to Device fan is found to be bad in device 0 (device error 0x2)

This can occur on any Nexus 7000 switch running NX-OS earlier than 4.2(3)


None. This is resolved in 4.2(3) and later releases. 
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