Administrator Guide
Disabling BFD for BGP
You can disable BFD for BGP.
To disable a BFD for BGP session with a specied neighbor, use the rst command. To remove the disabled state of a BFD for BGP session
with a specied neighbor, use the second command.
The BGP link with the neighbor returns to normal operation and uses the BFD session parameters globally congured with the bfd all-
neighbors command or congured for the peer group to which the neighbor belongs.
• Disable a BFD for BGP session with a specied neighbor.
ROUTER BGP mode
neighbor {ip-address | peer-group-name} bfd disable
• Remove the disabled state of a BFD for BGP session with a specied neighbor.
ROUTER BGP mode
no neighbor {ip-address | peer-group-name} bfd disable
Use BFD in a BGP Peer Group
You can establish a BFD session for the members of a peer group (the neighbor peer-group-name bfd command in ROUTER BGP
conguration mode).
Members of the peer group may have BFD:
• Explicitly enabled (the neighbor ip-address bfd command)
• Explicitly disabled (the neighbor ip-address bfd disable command)
• Inherited (neither explicitly enabled or disabled) according to the current BFD conguration of the peer group. For information about
BGP peer groups, refer to Congure Peer Groups.
If you explicitly enable (or disable) a BGP neighbor for BFD that belongs to a peer group:
• The neighbor does not inherit the BFD enable/disable values congured with the bfd all-neighbors command or congured for
the peer group to which the neighbor belongs.
• The neighbor inherits only the global timer values that are congured with the bfd all-neighbors command (interval, min_rx, and
multiplier).
If you explicitly enable (or disable) a peer group for BFD that has no BFD parameters congured (for example, advertisement interval) using
the neighbor peer-group-name bfd command, the peer group inherits any BFD settings congured with the bfd all-
neighbors command.
Displaying BFD for BGP Information
You can display related information for BFD for BGP.
To display information about BFD for BGP sessions on a router, use the following commands and refer to the following examples.
• Verify a BFD for BGP conguration.
EXEC Privilege mode
show running-config bgp
• Verify that a BFD for BGP session has been successfully established with a BGP neighbor. A line-by-line listing of established BFD
adjacencies is displayed.
EXEC Privilege mode
Bidirectional Forwarding Detection (BFD)
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