To change parameters for all VRRP sessions or for a particular VRRP session, use the followingcommands.• Change parameters for all VRRP sessions.INTERFACE modevrrp bfd all-neighbors interval milliseconds min_rx milliseconds multipliervalue role [active | passive]• Change parameters for a particular VRRP session.INTERFACE modevrrp bfd neighbor ip-address interval milliseconds min_rx millisecondsmultiplier value role [active | passive]To view session parameters, use the show bfd neighbors detail command, as shown in theexample in Verifying BFD Sessions with BGP Neighbors Using the show bfd neighbors commandexample in Displaying BFD for BGP Information.Disabling BFD for VRRPIf you disable any or all VRRP sessions, the sessions are torn down.A final Admin Down control packet is sent to all neighbors and sessions on the remote system change tothe Down state.To disable all VRRP sessions on an interface, sessions for a particular VRRP group, or for a particular VRRPsession on an interface, use the following commands.• Disable all VRRP sessions on an interface.INTERFACE modeno vrrp bfd all-neighbors• Disable all VRRP sessions in a VRRP group.VRRP modebfd disable• Disable a particular VRRP session on an interface.INTERFACE modeno vrrp bfd neighbor ip-addressConfiguring Protocol LivenessProtocol liveness is a feature that notifies the BFD manager when a client protocol is disabled.When you disable a client, all BFD sessions for that protocol are torn down. Neighbors on the remotesystem receive an Admin Down control packet and are placed in the Down state.To enable protocol liveness, use the following command.• Enable Protocol Liveness.CONFIGURATION modebfd protocol-liveness154 Bidirectional Forwarding Detection (BFD)
