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Cisco Bug: CSCtc01196 - Carson: ISIS topology broken after 2-3 consecutive SSO

Last Modified

Feb 15, 2018

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

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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Bug Details Include

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  • Status
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