Disabling BFD for OSPF

If you disable BFD globally, all sessions are torn down and sessions on the remote system are placed in a
Down state.
If you disable BFD on an interface, sessions on the interface are torn down and sessions on the remote
system are placed in a Down state. Disabling BFD does not trigger a change in BFD clients; a final Admin
Down packet is sent before the session is terminated.
To disable BFD sessions, use the following commands.
• Disable BFD sessions with all OSPF neighbors.
ROUTER-OSPF mode
no bfd all-neighbors
• Disable BFD sessions with all OSPF neighbors on an interface.
INTERFACE mode
ip ospf bfd all-neighbors disable
Configure BFD for OSPFv3
BFD for OSPFv3 provides support for IPV6.
Configuring BFD for OSPFv3 is a two-step process:
1. Enable BFD globally.
2. Establish sessions with OSPFv3 neighbors.
Related Configuration Tasks
•Changing OSPFv3 Session Parameters
•Disabling BFD for OSPFv3

Establishing Sessions with OSPFv3 Neighbors

You can establish BFD sessions with all OSPFv3 neighbors at once or with all neighbors out of a specific
interface. 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
following commands.
• Establish sessions with all OSPFv3 neighbors.
ROUTER-OSPFv3 mode
bfd all-neighbors
• Establish sessions with OSPFv3 neighbors on a single interface.
INTERFACE mode
ipv6 ospf bfd all-neighbors
To view the established sessions, use the show bfd neighbors command.
Bidirectional Forwarding Detection (BFD) 157