I - ISISO - OSPFR - Static Route (RTM)V - VRRPLocalAddr RemoteAddr Interface State Rx-int Tx-int Mult Clients* 2.2.5.1 2.2.5.2 Te 4/25 Down 1000 1000 3 VTo view session state information, use the show vrrp command.The bold line shows the VRRP BFD session.Dell(conf-if-te-4/25)#do show vrrp------------------TenGigabitEthernet 4/1, VRID: 1, Net: 2.2.5.1VRF:0 defaultState: Backup, Priority: 1, Master: 2.2.5.2Hold Down: 0 sec, Preempt: TRUE, AdvInt: 1 secAdv rcvd: 95, Bad pkts rcvd: 0, Adv sent: 933, Gratuitous ARP sent: 3Virtual MAC address:00:00:5e:00:01:01Virtual IP address:2.2.5.4Authentication: (none)BFD Neighbors:RemoteAddr State2.2.5.2 UpChanging VRRP Session ParametersBFD sessions are configured with default intervals and a default role.The parameters that you can configure are: Desired TX Interval, Required Min RX Interval, Detection Multiplier, and system role. Youcan change parameters for all VRRP sessions or for a particular neighbor.To change parameters for all VRRP sessions or for a particular VRRP session, use the following commands.• Change parameters for all VRRP sessions.INTERFACE modevrrp bfd all-neighbors interval milliseconds min_rx milliseconds multiplier value role[active | passive]• Change parameters for a particular VRRP session.INTERFACE modevrrp bfd neighbor ip-address interval milliseconds min_rx milliseconds multiplier valuerole [active | passive]To view session parameters, use the show bfd neighbors detail command, as shown in the example in Verifying BFDSessions with BGP Neighbors Using the show bfd neighbors command example 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 to the Down state.To disable all VRRP sessions on an interface, sessions for a particular VRRP group, or for a particular VRRP session 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 mode166 Bidirectional Forwarding Detection (BFD)
