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Cisco Bug: CSCuj76473 - MC ISSU 512: Redundancy Switchover Failure during RPFO in RUN Phase

Last Modified

Aug 02, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases


Description (partial)

During ISSU SMU Upgrade on a CRS Multi-Chassis system, we see that a redundancy switchover failure happens when we switchover from Active Route Processor to Standby Router Processor.

We see the following type of message in syslog:

[Debug]: writing reboot history into nvram.
Time: 52574d36  Cause code: 4000047      Reason: Cause: Reloading self due to redundancy switchover failure                    Process: insthelper                                                             Traceback: 4ba6e35c 4ba6e7cc 4ba6eb30 4be98560 4be98674 4001b488

ISSU SMU Upgrade is carried out on a CRS Multi-Chassis system having 5.1.2 image.
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