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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





    Author: Marcin Bialy

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