Cisco Bug: CSCur88455 - 7600 IP FRR: MPLStoMPLS traffic Blackhole after VRF Configuration
Feb 15, 2018
- Cisco 7600 Series Routers
Known Affected Releases
15.2(2)S 15.2(4)S 15.2(4)S6 15.4(3)S1.1
Symptom: 7600 router is dropping transient TAGtoTAG switched traffic in one direction right after new VRF is configured. Control-Plane from and to router is not affected -> Blackhole. Seen only with IP FRR (OSPF LFA), susceptibility to issue is developed by flaps of IP FRR primary path's interface & history of VRF configuration / un-configuration. Conditions: Remote LFA / IP FRR.
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Bug Details Include
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