Administrator Guide

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)
Configure BFD for Static Routes
BFD offers systems a link state detection mechanism for static routes.
With BFD, systems are notified 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.
Configuring BFD for static routes is a three-step process:
1 Enable BFD globally. Refer to Enabling BFD Globally.
2 On the local system, establish a session with the next hop of a static route. Refer to
Establishing Sessions for Static Routes.
3 On the remote system, establish a session with the physical port that is the origin of the static route.
Refer to Establishing a Session on Physical Ports.
Related Configuration Tasks
Changing Static Route Session Parameters
Disabling BFD for Static Routes
Bidirectional Forwarding Detection (BFD) 172