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Cisco Bug: CSCuo54351 - c4mk13 :%CPU_MONITOR-SW1-6-VSS_NOT_HEARD: error seen after LV.

Last Modified

Feb 27, 2018

Products (1)

  • Cisco Catalyst 6000 Series Switches

Known Affected Releases

15.1(2)SY2.18

Description (partial)

Symptom:
%CPU_MONITOR-SW1-6-VSS_NOT_HEARD: CPU_MONITOR messages have not been heard for 5 seconds [2/3/0]
%CPU_MONITOR-SW1-3-VSS_TIMED_OUT: CPU_MONITOR messages have failed, resetting module [2/3/0]%OIR-SW2_STBY-3-VSS_PWRCYCLE: Card in Switch 2 module 3, is being power-cycled 'off (Heartbeat Messages Not Received From Module)'
%C6KPWR-SW2_STBY-4-DISABLED: power to module in slot 3 set off (Heartbeat Messages Not Received From Module)

Conditions:
4sup ISSU Load version(LV) or Commit Version or Abort version in progress.
during 4sup ISSU LV2, in-chassis switchover and Linecard reset in the switch 2(Standby) will happen at the same. at this time, Current Active don't receive heartbeat from the Line cards present in Switch2 (those are in reset state). It results in VSS_NOT_HEARD, VSS_TIMEOUT and VSS_PWRCYCLE syslog messages will print on console.
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