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BFD Bidirectional Forwarding Detection Definition: BFD (Bidirectional Forwarding Detection): A network protocol used to quickly detect link failures in IP networks by monitoring the forwarding path between adjacent routers.
Bidirectional Forwarding Detection (BFD) is a network protocol that detects and quickly notifies network entities of path failures between them. It operates at a low overhead and can detect failures within milliseconds. BFD is commonly used in networking equipment to enhance the rapid detection of link failures, enhancing network reliability and minimizing downtime.