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Cisco Bug: CSCsy99288 - TCP reset request is not sent in time on RSP switchover-NSF fails

Last Modified

May 10, 2018

Products (4)

  • Cisco ASR 9000 Series Aggregation Services Routers
  • Cisco IOS XR Software
  • Cisco ASR 9010 Router
  • Cisco ASR 9006 Router

Known Affected Releases


Description (partial)

With BGP configured for NSF, doing a RSP switchover results in TCP reset request not sent in time to the peer resulting in BGP flaps.

During RSP switchover, the newly active RSP need to send TCP reset signal to the peer. But, due to a timing condition the TCP reset signal was not sent in time causing BGP to flap.
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