Guest

Preview Tool

Cisco Bug: CSCul21009 - MK1.C: Cetus: Change power redundancy model to N+1 for all combo of PSU

Last Modified

Mar 06, 2018

Products (1)

  • Cisco Catalyst 6000 Series Switches

Known Affected Releases

15.1SY

Description (partial)

Symptom:
If anything less than 4 PSU, the 'show power' CLI and Syslogs state the system is "non-redundant".

In the redundant (3+1) mode, the CLI output of "show power" currently displays the following:

 system power redundancy mode = redundant

When 4 PSU (3+1 redundant) transitions to 3 PSU (3+0 combined), the following syslog messages will be printed:

*Oct 29 17:44:22.788: %C6KPWR-SW2-4-PSOUTPUTDROP: Power supply 4 output has dropped
*Oct 29 17:44:22.804: %C6KPWR-SW2-4-MULTIPSNOREDUNDANCY: System is running with 3 power supplies, no fully redundancy is supported

The same message is displayed when 3 PSU (3+0) transitions to 2 PSU (2+0). When 2 PSU transitions to 1 PSU, the following syslog messages will be printed.

*Oct 29 17:45:10.464: %C6KPWR-SW2-2-PSFAIL: power supply 2 output failed.
*Oct 29 17:45:10.476: %C6KPWR-SW2-4-PSREDUNDANTONESUPPLY: in power-redundancy mode, system is operating on one power supply.

In the psuedo-combined (3+0, 2+0 or 1+0) mode, the CLI output of "show power" currently displays the following:

 system power redundancy mode = redundant
 system power redundancy operationally = non-redundant

Conditions:
The current Cetus (C6807-XL) power redundancy operational model is 3+1 only (4 PSU online), and all other modes are pseudo-combined mode N+0 (3+0, 2+0 or 1+0).

Also, there are only 2 config modes: redundant & combined. 

In other words... when "redundant" mode is configured, the system is only considered "redundant" in 3+1 (4 PSU).
Bug details contain sensitive information and therefore require a Cisco.com account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.