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Cisco Bug: CSCup49206 - Conditional Default route getting flushed on peer performing SSO on UUT.

Last Modified

Oct 31, 2019

Products (17)

  • Cisco IOS
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901-6CZ-FT-A Router
  • Cisco ASR 901-12C-FT-D Router
  • Cisco 7600 Series Route Switch Processor 720 with 10 Gigabit Ethernet Uplinks
  • Cisco 7600 Series Route Switch Processor 720 with Multilayer Switch Feature Card
  • Cisco ASR 901-6CZ-FT-D Router
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Known Affected Releases


Description (partial)

Restarting router may flush and later originate default type-5 LSA during NSF/NSR restart. This flush may cause traffic loss if path via restarting router is not protected via backup path.

Performed NSF/NSR restart.

OSPF default information is originated based on non-default route or default route, which is added to the RIB only after OSPF NSF/GR is completed. Example of protocol which usually converges slower than OSPF NSF/NSR is BGP GR.
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