Preview Tool

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


Description (partial)

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

ASR 9000 peered with a route-reflector.
Issue occures immediately after an upgrade to 4.3.4.
Bug details contain sensitive information and therefore require a account to be viewed.

Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
  • Severity
  • Known Fixed Releases
  • Related Community Discussions
  • Number of Related Support Cases
Bug information is viewable for customers and partners who have a service contract. Registered users can view up to 200 bugs per month without a service contract.