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Parameters
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.
Defaults none
Command
Modes
ROUTER BGP
Command
History
This guide is platform-specific. For command information about other platforms,
refer to the relevant Dell Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
9.2(1.0) Introduced on the Z9500.
9.0.0.0 Introduced on the Z9000.
8.3.19.0 Introduced on the S4820T.
8.3.8.0 Introduced on the S4810.
8.4.1.3 Introduced on the E-Series ExaScale.
Usage
Information
When you enable a BFD session with a specified BGP neighbor or peer group using
the bfd all-neighbors command, the default BFD session parameters are used
(interval:
100 milliseconds, min_rx: 100 milliseconds, multiplier: 3 packets, and
role: active) if you have not specified parameters with the bfd all-neighbors
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 all-neighbors command or configured for the peer group to which the
neighbor belongs.
• The neighbor only inherits the global timer values configured with the bfd
all-neighbors command: interval, min_rx, and multiplier.
Related
Commands
neighbor bfd disable — explicitly disables a BFD session with a BGP neighbor or a
BGP peer group.
show bfd neighbors — displays the BFD neighbor information on all interfaces or a
specified interface.
354
Bidirectional Forwarding Detection (BFD)