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Cisco Bug: CSCun17492 - C4k %Timer Expired messages - While executing show tech

Last Modified

Feb 20, 2020

Products (1)

  • Cisco Catalyst 4000 Series Switches

Known Affected Releases

15.2(1)E 15.2(1.3)

Description (partial)

Symptom:
%Timer expired message appears while executing 'show tech'.  Additionally, the expired message may appear when executing 'show switch virtual' commands or anything subset of commands that relies on remote-tty sessions between the active and standby supervisors.

Conditions:
This issue is caused by a remote vty session in a stuck state between the active and standby supervisor.  As a result, any further communication between the supervisors will fail.  

This has been seen when telnet/ssh sessions are abruptly killed while executing commands.
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