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FabricSwitchTempSensorFailed_Alert reported on a Cisco switch

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Applies to

  • Cisco MDS 9148S switches
  • Cisco NX-OS 8.2.2 or lower 

Issue

  • ONTAP reporting health alert for FabricSwitchTempSensorFailed_Alert
  • show environment output from the reproted switch shows an issue with a temperature sensor: 

--------------------------------------------------------------------
Module   Sensor        MajorThresh   MinorThres   CurTemp     Status
                       (Celsius)     (Celsius)    (Celsius)         
--------------------------------------------------------------------
1        Outlet1  (s1)   75              60          35         Ok             
1        Outlet2  (s2)   75              60          31         Ok             
1        Intake1  (s3)   75              60          32         Ok             
1        Intake2  (s4)   75              60          32         Ok             
1        FC-SOC1  (s5)   n/a             n/a         n/a        Failure

  • show loging nvram shows error: 

%KERN-0-SYSTEM_MSG: [108265164.104708] BUG: soft lockup - CPU#1 stuck for 23s! [kworker/1:1:1079] - kernel

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