Example of the show bfd neighbors Command to Verify Static RoutesTo verify that sessions have been created for static routes, use the show bfd neighbors command.R1(conf)#ip route 2.2.3.0/24 2.2.2.2R1(conf)#ip route bfdR1(conf)#do show bfd neighbors* - Active session roleAd Dn - Admin DownC - CLII - ISISO - OSPFR - Static Route (RTM)LocalAddr RemoteAddr Interface State Rx-int Tx-int Mult Clients2.2.2.1 2.2.2.2 Te 4/24 Up 100 100 4 RTo view detailed session information, use the show bfd neighbors detail command, as shown in the examples in DisplayingBFD for BGP Information.Changing Static Route Session ParametersBFD sessions are configured with default intervals and a default role.The parameters you can configure are: Desired TX Interval, Required Min RX Interval, Detection Multiplier, and system role. Theseparameters are configured for all static routes. If you change a parameter, the change affects all sessions for static routes.To change parameters for static route sessions, use the following command .• Change parameters for all static route sessions.CONFIGURATION modeip route bfd interval milliseconds min_rx milliseconds multiplier value role [active |passive]To view session parameters, use the show bfd neighbors detail command, as shown in the examples in Displaying BFD forBGP InformationDisabling BFD for Static RoutesIf you disable BFD, all static route BFD sessions are torn down.A final Admin Down packet is sent to all neighbors on the remote systems, and those neighbors change to the Down state.To disable BFD for static routes, use the following command.• Disable BFD for static routes.CONFIGURATION modeno ip route bfdConfigure BFD for OSPFWhen using BFD with OSPF, the OSPF protocol registers with the BFD manager. BFD sessions are established with all neighboringinterfaces participating in OSPF. If a neighboring interface fails, the BFD agent notifies the BFD manager, which in turn notifies theOSPF protocol that a link state change has occurred.Configuring BFD for OSPF is a two-step process:1. Enable BFD globally.2. Establish sessions with OSPF neighbors.Related Configuration Tasks• Changing OSPF Session Parameters• Disabling BFD for OSPF152 Bidirectional Forwarding Detection (BFD)
