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Cisco Bug: CSCvi89146 - %PLATFORM_STACKPOWER-4-REDUNDANCY_LOSS: Switch 4's power stack lost redundancy

Last Modified

Jul 13, 2018

Products (1)

  • Cisco Catalyst 3850 Series Switches

Known Affected Releases

3.7(5)

Description (partial)

Symptom:
Following error logs occurring on the switch stack (running on 3.7.5E and also seen on 16.6.3) after one of the power sources went down and came back up:

081961: Feb 19 02:08:57.450 GMT: %PLATFORM_STACKPOWER-4-REDUNDANCY_LOSS: Switch 4's power stack lost redundancy and is now operating in power sharing mode
081962: Feb 19 02:09:57.449 GMT: %PLATFORM_STACKPOWER-4-REDUNDANCY_LOSS: Switch 4's power stack lost redundancy and is now operating in power sharing mode
081963: Feb 19 02:10:57.448 GMT: %PLATFORM_STACKPOWER-4-REDUNDANCY_LOSS: Switch 4's power stack lost redundancy and is now operating in power sharing mode
081964: Feb 19 02:11:57.447 GMT: %PLATFORM_STACKPOWER-4-REDUNDANCY_LOSS: Switch 4's power stack lost redundancy and is now operating in power sharing mode

Conditions:
The log messages will continuously fill up the logging buffer periodically. 

No actual issues with stack-power redundancy will be noticed.

This issue is cosmetic.

Issue could be easily recreated by reseating power cords from power supply slot A of each of the two switches in a power stack:
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