Cisco Bug: CSCtc01196 - Carson: ISIS topology broken after 2-3 consecutive SSO
Feb 15, 2018
- Cisco IOS
Known Affected Releases
Symptoms: ISIS topology is broken after two or three consecutive SSOs with "isis nsf ietf" enabled. This causes routes to be missing in the routing table and permanent traffic loss. Conditions: The symptom is observed when "isis nsf ietf" is enabled and the restarting router comes up too slowly, causing neighboring routers on LAN interfaces to time out.
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