Configure BFD
This section contains the following procedures.
Configure BFD for Physical Ports
Configure BFD for Port-Channels
Configure BFD for Static Routes
Configure BFD for OSPF
Configure BFD for OSPFv3
Configure BFD for BGP
Configure BFD for VRRP
Configure BFD for VLANs
Configuring Protocol Liveness
Troubleshooting BFD

Configure BFD for Physical Ports

BFD on physical ports is useful when you do not enable the routing protocol.
Without BFD, if the remote system fails, the local system does not remove the connected route until the
first failed attempt to send a packet. When you enable BFD, the local system removes the route as soon
as it stops receiving periodic control packets from the remote system.
Configuring BFD for a physical port is a two-step process:
1. Enable BFD globally. Refer to Enabling BFD Globally.
2. Establish a session with a next-hop neighbor.
Related Configuration Tasks
Changing Physical Port Session Parameters.
Disabling and Re-Enabling BFD.

Enabling BFD Globally

You must enable BFD globally on both routers.
To enable the BFD globally, use the following command.
Enable BFD globally.
CONFIGURATION mode
bfd enable
Example of Verifying BFD is Enabled
To verify that BFD is enabled globally, use the show running bfd command.
148 Bidirectional Forwarding Detection (BFD)