Command Reference Guide

286 | Bidirectional Forwarding Detection (BFD)
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Command
History
Usage
Information
This command provides the flexibility to fine tune the timer values based on individual
interface needs when ISIS BFD is configured in CONFIGURATION mode. Any timer values
specified with this command override timers set using the command bfd all-neighbors. Using
the no form of this command will not disable BFD if BFD is configured in
CONFIGURATION mode.
Use the keyword
disable to disable BFD on a specific interface while BFD is configured in
from CONFIGURATION mode.
neighbor bfd
e
x
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: 100 milliseconds,
min_rx: 100 milliseconds, multiplier: 3 packets, and role: active) if no parameters have been
specified 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.
Version 8.2.1.0 Introduced on E-Series ExaScale
Version 7.5.1.0 Introduced on E-Series
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 8.3.8.0 Introduced on the S4810.
Version 8.4.1.3 Introduced on the E-Series ExaScale.