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Cisco Bug: CSCvt03878 - NXA-PAC-500W-PE - After power glitch, PSU can remain in Shut Down

Last Modified

Feb 14, 2020

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

9.3(2)

Description (partial)

Symptom:
show environment power detail
Power Supply:
Voltage: 12 Volts
Power                      Actual             Actual        Total
Supply    Model            Output             Input      Capacity       Status
                           (Watts )           (Watts )     (Watts )
-------  ----------  ---------------  ------  ----------  --------------------
1        NXA-PAC-500W-PE         0 W                0 W         0 W   Shutdown
2        NXA-PAC-500W-PE        88 W               98 W       500 W      Ok
 
 
Power Usage Summary:
--------------------
Power Supply redundancy mode (configured)                PS-Redundant
Power Supply redundancy mode (operational)               Non-Redundant
 
Total Power Capacity (based on configured mode)             500.00 W
Total Grid-A (first half of PS slots) Power Capacity          0.00 W
Total Grid-B (second half of PS slots) Power Capacity       500.00 W
Total Power of all Inputs (cumulative)                      500.00 W
Total Power Output (actual draw)                             88.00 W
Total Power Input (actual draw)                              98.00 W
Total Power Allocated (budget)                                N/A
Total Power Available for additional modules                  N/A
 
 
Power Usage details:
--------------------
Power reserved for Supervisor(s):                             N/A
Power reserved for Fabric, SC Module(s):                      N/A
Power reserved for Fan Module(s):                             N/A
Total power reserved for Sups,SCs,Fabrics,Fans:               N/A
 
Are all inlet cords connected: No
 
Power supply details:
---------------------
PS_1 total capacity:       0 W   Voltage:12V
 
Pin:105.38W  Vin:238.50V    Iin:0.42A    Pout:85.50W    Vout:11.99V    Iout:6.16A
 
Cord not connected
Software-Alarm: No
Hardware alarm_bits
 
PS_2 total capacity:     500 W   Voltage:12V
 
Pin:98.38W  Vin:232.25V    Iin:0.42A    Pout:88.00W    Vout:12.07V    Iout:6.58A
 
Cord connected to 220V AC
Software-Alarm: No
Hardware alarm_bits

Conditions:
Nexus9000 C93180YC-FX running NX-OS 9.3.2
NXA-PAC-500W-PE 


All our Nexus 9000 C93180YC-FX have the same output:

EPLD Device                     Version
---------------------------------------
MI FPGA                          0x10
IO FPGA                          0x17


All our Nexus 9000 C9348GC-FXP have the same output:

EPLD Device                     Version
---------------------------------------
MI FPGA                          0x9
IO FPGA                          0x8


All our Nexus 9000 C9336C-FX2 have the same output:

EPLD Device                     Version
---------------------------------------
MI FPGA                          0x4
IO FPGA                          0x8
Power glitch in form of power surge or power outage triggered this issue.
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