Reference Guide

272 | Bidirectional Forwarding Detection (BFD)
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neighbor bfd
e
x
z
Explicitly enable a BFD session with a BGP neighbor or a BGP peer group.
Syntax
neighbor
{ip-address | peer-group-name} bfd
Parameters
Defaults
None
Command Modes
ROUTER BGP
Command
History
Usage
Information
When you enable a BFD session with a specified BGP neighbor or peer group using
the bfd neighbor command, the default BFD session parameters are used (interval:
1000 milliseconds, min_rx: 1000 milliseconds, multiplier: 3 packets, and role: active)
if no parameters have been specified with the bfd neighbor command.
When you explicitly enable a BGP neighbor for a BFD session with the bfd neighbor
command:
• The neighbor does not inherit the global BFD enable values configured with the
bfd neighbor command or configured for the peer group to which the neighbor
belongs.
• The neighbor only inherits the global timer values configured with the bfd
neighbor command: interval, min_rx, and multiplier.
Related
Commands
ip-address
Enter the IP address of the BGP neighbor that you want to explicitly
enable for BFD sessions in dotted decimal format (A.B.C.D).
peer-group-name
Enter the name of the peer group that you want to explicitly enable for
BFD sessions.
Version 9.0.0.0 Introduced on the Z9000.
Version 8.3.8.0 Introduced on the S4810.
Version 8.4.1.3 Introduced on the E-Series ExaScale.
bfd neighbor Enable BFD sessions with all neighbors discovered by Layer 3
protocols.
neighbor bfd disable Explicitly disable a BFD session with a BGP neighbor or a BGP peer
group.
show bfd neighbors Display BFD neighbor information on all interfaces or a specified
interface.