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Cisco Bug: CSCvi11173 - PSU: Total Power Available for additional modules displays Negative value

Last Modified

Aug 19, 2019

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

7.0(3)IA7(0.12)

Description (partial)

Symptom:
in show environment power , you will see negative value of "Total Power Available for additional modules"  

snip
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Power Usage Summary:
--------------------
Power Supply redundancy mode (configured)                PS-Redundant
Power Supply redundancy mode (operational)               PS-Redundant
 
Total Power Capacity (based on configured mode)            9000.00 W
Total Grid-A (first half of PS slots) Power Capacity       12000.00 W
Total Grid-B (second half of PS slots) Power Capacity         0.00 W
Total Power of all Inputs (cumulative)                     12000.00 W
Total Power Output (actual draw)                           4469.00 W
Total Power Input (actual draw)                            4747.00 W
Total Power Allocated (budget)                             13140.00 W
Total Power Available for additional modules               -4140.00 W >>>

Conditions:
I7(3) code
and  { having 4 PSUs (N9K-PAC-3000W-B) OR four or more FMs (N9K-C9508-FM-E) }

This only affects chassis which has N9K-C9508-FM-E and not any other fabric module.
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