Users Guide
• Disable BFD on an interface.
INTERFACE mode
no bfd enable
• Enable BFD on an interface.
INTERFACE mode
bfd enable
If you disable BFD on a local interface, this message displays:
R1(conf-if-gi-4/24)#01:00:52: %RPM0-P:RP2 %BFDMGR-1-BFD_STATE_CHANGE: Changed session
state to
Ad
Dn for neighbor 2.2.2.2 on interface Gi 4/24 (diag: 0)
If the remote system state changes due to the local state administration being down, this message displays:
R2>01:32:53: %RPM0-P:RP2 %BFDMGR-1-BFD_STATE_CHANGE: Changed session state to Down for
neighbor
2.2.2.1 on interface Gi 2/1 (diag: 7)
Congure BFD for Static Routes
BFD oers systems a link state detection mechanism for static routes. With BFD, systems are notied to remove static routes from the
routing table as soon as the link state change occurs, rather than waiting until packets fail to reach their next hop.
Conguring BFD for static routes is a three-step process:
1 Enable BFD globally.
2 Congure static routes on both routers on the system (either local or remote).
3 Congure an IP route to connect BFD on the static routes using the ip route bfd command.
Related Conguration Tasks
• Changing Static Route Session Parameters
• Disabling BFD for Static Routes
Establishing Sessions for Static Routes
Sessions are established for all neighbors that are the next hop of a static route.
Figure 13. Establishing Sessions for Static Routes
Bidirectional Forwarding Detection (BFD)
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