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Cisco Bug: CSCvt27674 - CBR8: standby SUP unable to activate when Primary fails

Last Modified

Sep 21, 2020

Products (1)

  • Cisco cBR Series Converged Broadband Routers

Known Affected Releases


Description (partial)

When the active SUP crashes the standby SUP cannot take over, it will experience CPUHOG and finally will reload due to Watchdog timeout.
Below logs might be found in the IOS crashinfo file on the standby SUP:

%SYS-3-CPUHOG: Task is running for (2446)msecs, more than (2000)msecs (47/47),process = RF Master Main Thread.
%SYS-3-CPUHOG: Task is running for (25325)msecs, more than (2000)msecs (47/47),process = RF Master Main Thread.
-Traceback= .....
IOSXE-WATCHDOG: Process = RF Master Main Thread
%SCHED-0-WATCHDOG: Scheduler running for a long time, more than the maximum configured (120) secs.

Unknown at this moment. It is hard to identify the condition, but it is related to VDOC configuration, there is no this issue if this feature is not configured.
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