Cisco Bug: CSCuq40996 - None-Cisco ISIS LSP is purged after FO if auth and NSF Cisco are used

Last Modified

Sep 14, 2019

Products (1)

Cisco IOS

Known Affected Releases

12.2(33.1.12)XNE

Description (partial)

Symptom:
Following switchover, Cisco router will purge some none-Cisco ISIS LSPs

Conditions:
- Multi-vendor environemnt ( the vendors must insert authentication TLV at some place other than the first position in an LSP)
- ISIS Authentication is enabled
- NSR (NSF Cisco) is in use

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