Applicability of Bidirectional Forwarding Detection (BFD) for Multi-point Networks in Virtual Router Redundancy Protocol (VRRP)

This document specifies the applicability of Bidirectional Forwarding Detection in multipoint networks to support sub-second failure detection for Virtual Router Redundancy Protocol Router Role election. The mechanism enables faster determination of the Active Router without requiring any modification to the protocol behavior or message formats defined in RFC 9568.