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Cisco Bug: CSCuj59940 - FRR+PIC over BDI: traffic loss after rib-update-delay post cutover

Last Modified

Jul 16, 2018

Products (21)

  • Cisco IOS
  • Cisco ASR 901-6CZ-F-D Router
  • Cisco ASR 901-6CZ-FS-D Router
  • Cisco ASR 901S-4SG-F-D Router
  • Cisco ME 3600X-24TS-M Switch
  • Cisco ASR 901-4C-FT-D Router
  • Cisco ASR 901S-2SG-F-D Router
  • Cisco ASR 901-6CZ-F-A Router
  • Cisco ASR 901S-2SG-F-AH Router
  • Cisco ASR 901-6CZ-FT-A Router
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Known Affected Releases

15.4(1)S 15.4(2)S

Description (partial)

Symptom:Traffic loss for BGP destinations following expiration of microloop avoidance delay timer.

Conditions:IP FRR with RLFA + BGP-PIC is in use at scale. When local link failure occurs following expiration of the microloop avoidance timer traffic loss to some BGP destinations may occur. Duration of traffic loss is likely to be longer on ASR903 platforms.
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