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SD-WAN Bidirectional Forwarding Detection (BFD)

Design & Configure

SD-WAN Bidirectional Forwarding Detection (BFD)

The BFD (Bidirectional Forwarding Detection) is a protocol that detects link failures as part of the Cisco SD-WAN (Viptela) high availability solution, is enabled by default on all vEdge routers, and you cannot disable it.

BFD and related parameters:

  • Path liveliness and quality measurement
  • detection protocol: Up/Down, loss/latency/jitter,
  • IPSec tunnel MTU,
  • Runs between all routers in the topology
  • Uses hello (up/down) interval, poll interval and multiplier for detection

 

BFD_SD_WAN

 

 

Author: Marcin Bialy
 
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