Users Guide

1 Enable BFD globally.
2 Establish sessions with OSPFv3 neighbors.
Related Conguration Tasks
• Changing OSPFv3 Session Parameters
• Disabling BFD for OSPFv3
Changing OSPFv3 Session Parameters
Congure BFD sessions with default intervals and a default role.
The parameters that you can congure are: desired tx interval, required min rx interval, detection multiplier,
and system
role. Congure these parameters for all OSPFv3 sessions or all OSPFv3 sessions on a particular interface. If you change a
parameter globally, the change aects all OSPFv3 neighbors sessions. If you change a parameter at the interface level, the change aects
all OSPFv3 sessions on that interface.
To change parameters for all OSPFv3 sessions or for OSPFv3 sessions on a single interface, use the following commands.
To view session parameters, use the show bfd neighbors detail command, as shown in the example in Displaying BFD for BGP
Information.
• Change parameters for all OSPFv3 sessions.
ROUTER-OSPFv3 mode
bfd all-neighbors interval milliseconds min_rx milliseconds multiplier value role [active |
passive]
• Change parameters for OSPFv3 sessions on a single interface.
INTERFACE mode
ipv6 ospf bfd all-neighbors interval milliseconds min_rx milliseconds multiplier value role
[active | passive]
Establishing BFD Sessions with OSPFv3 Neighbors for nondefault VRFs
To congure BFD in a nondefault VRF, use the following procedure:
• Enable BFD globally.
CONFIGURATION mode
bfd enable
• Establish sessions with all OSPFv3 neighbors in a specic VRF.
ROUTER-OSPFv3 mode
bfd all-neighbors
• Establish sessions with the OSPFv3 neighbors on a single interface in a specic VRF.
INTERFACE mode
ipv6 ospf bfd all-neighbors
• To disable BFD on a specic OSPFv3 enabled interface, use the ipv6 ospf bfd all-neighbors disable command. You can
also use the
no bfd enable command to disable BFD on a specic interface.
NOTE
: You can create upto a maximum of 200 BFD sessions (combination of OSPFv2 and OSPFv3 with a timer of 300*300*3)
for both default and nondefault VRFs.
Bidirectional Forwarding Detection (BFD) 165