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Cisco Bug: CSCvt30974 - BFD connections are down after the tear down of extra vsmart and TLOC delete during GR

Last Modified

Sep 04, 2020

Products (51)

  • Cisco IOS
  • Cisco Catalyst 9300-48T-A Switch
  • Cisco Catalyst C9500-16X-E Switch
  • Cisco Catalyst 9300-48UN-A Switch
  • Cisco Catalyst 9300-48P-A Switch
  • Cisco Catalyst 9300-48UXM-A Switch
  • Cisco Catalyst 9300-48U-A Switch
  • Cisco Catalyst 9800-40 Wireless Controller
  • Cisco Catalyst 9400 Supervisor Engine-1XL-Y
  • Cisco Catalyst 9120AXE Access Point
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Known Affected Releases

17.2.1 17.3 20.2 20.3

Description (partial)

BFD sessions are down when vsmart received one stale TLOC with higher SPI and one active TLOC with lower SPI.

1. tear down router's connection with vsmart, then router goes down to graceful restart.
2. delete tunnel interface during GR
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