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Cisco Bug: CSCup37457 - 520: bfd central-services BFD NSR data not synchronized; NSR not ready

Last Modified

Apr 08, 2020

Products (1)

  • Cisco ASR 9000 Series Aggregation Services Routers

Known Affected Releases

5.2.0.BASE 5.3.0.BASE

Description (partial)

After RP Failover (RPFO), the non-stop routing (NSR) related data for BFD central-services remain not synchronised.  

The output for "show redundancy" CLI command, gives the details of the standby-RP state in this condition.

BFD Sessions in the line cards (LC) and BFD clients are NOT affected.  There is no known effect on the network's convergence.

When the system enters this condition, the subsequent RPFO cannot be triggered and that is the main symptom of this problem.

The condition happens only after RPFO, triggered by random system IPC disconnects.  The system does NOT enter into this state on every RPFO, but only for some fail overs.
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