146 | Bidirectional Forwarding Detection (BFD)
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2. Establish a session with a next-hop neighbor.
Related configuration tasks
• Viewing physical port session parameters.
• Disabling and re-enabling BFD.
Enabling BFD globally
BFD must be enabled globally on both routers, as shown in the illustration in Establishing a session on
physical ports.
To enable BFD globally:
Verify that BFD is enabled globally using the command
show running bfd, as shown in the example below.
R1(conf)#bfd ?
enable Enable BFD protocol
protocol-liveness Enable BFD protocol-liveness
R1(conf)#bfd enable
R1(conf)#do show running-config bfd
!
bfd enable
R1(conf)#
Establishing a session on physical ports
To establish a session, BFD must be enabled at interface level on both ends of the link, as shown in the
illustration below. The configuration parameters do not need to match.
Step Task Command Syntax Command Mode
1 Enable BFD globally. bfd enable CONFIGURATION
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