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False switch power fail alerts are generated after power event on Cisco Switch

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Category:
fas-systems
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hw
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Applies to

  • Cisco Nexus cluster switch

Issue

  • There was a power event impacting the switches and following this we see the following alerts in the EMS logs sporadically:
Wed Aug 18 09:15:13 -0400 [node1: cshmd: hm.alert.raised:alert]: Alert Id = SwitchPowerFail_Alert , Alerting Resource = sw1(FOCXXXXXXXX)/PowerSupply-1 raised by monitor cluster-switch
Wed Aug 18 09:15:13 -0400 [node1: cshmd: hm.alert.raised:alert]: Alert Id = SwitchPowerFail_Alert , Alerting Resource = sw1(FOCXXXXXXXX)/PowerSupply-2 raised by monitor cluster-switch
Wed Aug 18 09:15:13 -0400 [node1: cshmd: hm.alert.raised:alert]: Alert Id = SwitchPowerFail_Alert , Alerting Resource = sw2(FOCXXXXXXXX)/PowerSupply-2 raised by monitor cluster-switch
  • Health alerts regarding this reappear once cleared although the PSUs have been checked physically and confirmed to be working
  • The following is seen from the switch although as mentioned the affected PSU is confirmed to be functioning:

`show environment`

switch1:

Power Supply:
Voltage: 12 Volts
Power                      Actual             Actual        Total
Supply    Model            Output             Input        Capacity     Status
                           (Watts )           (Watts )     (Watts )
-------  ----------  ---------------  ------  ----------  --------------------
1        NXA-PAC-650W-PE         0 W                0 W         0 W   Shutdown
2        NXA-PAC-650W-PE         0 W                0 W         0 W   Shutdown

switch2:

Power Supply:
Voltage: 12 Volts
Power                      Actual             Actual        Total
Supply    Model            Output             Input        Capacity     Status
                           (Watts )           (Watts )     (Watts )
-------  ----------  ---------------  ------  ----------  --------------------
1        NXA-PAC-650W-PE        84 W               95 W       650 W      Ok
2        NXA-PAC-650W-PE         0 W                0 W         0 W   Shutdown


 

 


 

 

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