bfd all-neighbors interval milliseconds min_rx milliseconds multiplier valuerole [active | passive]• Change parameters for OSPFv3 sessions on a single interface.INTERFACE modeipv6 ospf bfd all-neighbors interval milliseconds min_rx milliseconds multipliervalue role [active | passive]Disabling BFD for OSPFv3If you disable BFD globally, all sessions are torn down and sessions on the remote system are placed in aDown state.If you disable BFD on an interface, sessions on the interface are torn down and sessions on the remotesystem are placed in a Down state. Disabling BFD does not trigger a change in BFD clients; a final AdminDown packet is sent before the session is terminated.To disable BFD sessions, use the following commands.• Disable BFD sessions with all OSPFv3 neighbors.ROUTER-OSPFv3 modeno bfd all-neighbors• Disable BFD sessions with OSPFv3 neighbors on a single interface.INTERFACE modeipv6 ospf bfd all-neighbors disableEstablishing Sessions with OSPFv3 NeighborsYou can establish BFD sessions with all OSPFv3 neighbors at once or with all neighbors out of a specificinterface. Sessions are only established when the OSPFv3 adjacency is in the Full state.To establish BFD with all OSPFv3 neighbors or with OSPFv3 neighbors on a single interface, use the followingcommands.• Establish sessions with all OSPFv3 neighbors.ROUTER-OSPFv3 modebfd all-neighbors• Establish sessions with OSPFv3 neighbors on a single interface.INTERFACE modeipv6 ospf bfd all-neighborsTo view the established sessions, use the show bfd neighbors command.Configure BFD for IS-ISWhen using BFD with IS-IS, the IS-IS protocol registers with the BFD manager. BFD sessions are thenestablished with all neighboring interfaces participating in IS-IS. If a neighboring interface fails, the BFD agentBidirectional Forwarding Detection (BFD) 177
