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Cisco Bug: CSCuj58986 - NSF aborted and OSPF down after RSP FO, when LS update was fragmented

Last Modified

May 12, 2018

Products (1)

  • Cisco Carrier Routing System

Known Affected Releases


Description (partial)

NSF aborted and OSPF down after RSP FO, when receiving  fragmented LS update from a remote GR helper during GR.

This issue can be seen when all the following conditions are met
- NSF is enabled in OSPF.
- While GR is in progress after RP fail-over
- A remote GR helper has LSA which size is large and its LS update packet is fragmented
- There is only one ospf process configured.
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