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Cisco Bug: CSCuq25023 - isis_nc_upd_state_sync_p2p will not wait for PSNP packets and delete adj

Last Modified

Aug 14, 2017

Products (1)

  • Cisco IOS

Known Affected Releases

15.4(1.14)S

Description (partial)

Symptom:
ISIS Adjacency is deleted following switchover causing a flap

Conditions:
This happens only if :
1) nsf cisco is configured 
2) point to point links are present
3) Multiple boolean events occur while waiting for PSNP packets from the P2P neighbor (It can happen in the case of a bug in the code similar to CSCuq33025 or it could happen in a scale scenario)
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