Reference Guide

158 | Bidirectional Forwarding Detection (BFD)
www.dell.com | support.dell.com
To disable BFD on an interface:
To re-enable BFD on an interface:
Configuring BFD for Static Routes
Configuring BFD for Static Routes is supported on the S5000 platform.
BFD gives 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 having to
wait until packets fail to reach their next hop.
Configuring BFD for static routes is a three-step process:
1. Enabling BFD globally.
2. On the local system, establish a session with the next hop of a static route. Refer to Configuring BFD
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.
Establishing sessions for static routes
Sessions are established for all neighbors that are the next hop of a static route.
Step Task Command Syntax Command Mode
1 Disable BFD on an interface. no bfd enable INTERFACE
Message 2 Disabling BFD on a Local Interface
FTOS(conf-if-te-4/24)#01:00:52: %STKUNIT3-M:CP %BFDMGR-1-BFD_STATE_CHANGE: Changed session state
to Ad Dn for neighbor 2.2.2.2 on interface Te 4/24 (diag: 0)
Message 3 Remote System State Change due to Local State Admin Down
FTOS>01:32:53: %STKUNIT3-M:CP %BFDMGR-1-BFD_STATE_CHANGE: Changed session state to Down for
neighbor 2.2.2.1 on interface Te 2/1 (diag: 7)
Step Task Command Syntax Command Mode
1 Enable BFD on an interface. bfd enable INTERFACE