Cisco Bug: CSCuo96522 - stale prefix stuck in BGP after upgrade - not advertised by any neighbor

Last Modified

Jan 09, 2017

Products (1)

Cisco Carrier Routing System

Known Affected Releases

4.3.4.BASE

Description (partial)

Symptom:
An IPv4 BGP route / network / prefix may unexpectedly appear in the BGP table, potentially causing a traffic black-hole.

Conditions:
ASR 9000 peered with a route-reflector.
Issue occures immediately after an upgrade to 4.3.4.

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