Cisco Bug: CSCuo85700 - EPCFRR fails to occur following BFD detected link failure, sometimes!
Jan 14, 2017
- Cisco ASR 9000 Series Aggregation Services Routers
Known Affected Releases
Symptom: Suppose a path for a prefix is using a particular link where BFD is configured Suppose the link flaps multiple times quickly. Even though there is a repair path (LFA, rLFA, or ti-LFA) protecting this link, the traffic for that prefix does not get rerouted to that repair path within 50msec of the BFD hold down time expiration Conditions: The following 4 conditions must occur - A point to multi-point link where there is a switch in the middle - A link that where BFD is configured - One or more prefixes using that link and there is LFA, remote LFA or ti-LFA to protect this link - Link flaps multiple times very quickly such that BFD dampening is triggered
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Bug Details Include
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