Deployment Guide

To remove all BFD sessions with IS-IS neighbors discovered on this interface, use the no isis bfd all-
neighbors [disable | [interval interval min_rx min_rx multiplier value role
{active | passive}]] command.
Parameters
disable (OPTIONAL) Enter the keyword disable to disable BFD on this interface.
interval milliseconds (OPTIONAL) Enter the keywords interval to specify non-default BFD session
parameters beginning with the transmission interval. The range is from 50 to 1000. The
default is 200.
min_rx milliseconds Enter the keywords min_rx to specify the minimum rate at which the local system would
like to receive control packets from the remote system. The range is from 50 to 1000. The
default is 200.
multiplier value Enter the keywords multiplier to specify the number of packets that must be missed
in order to declare a session down. The range is from 3 to 50. The default is 3.
role [active |
passive]
Enter the role that the local system assumes:
• Active — The active system initiates the BFD session. Both systems can be active
for the same session.
• Passive — The passive system does not initiate a session. It only responds to a
request for session initialization from the active system.
The default is Active.
Defaults See Parameters
Command Modes INTERFACE
Supported Modes Full–Switch
Command History
Version Description
9.9(0.0) Introduced on the FN IOM.
9.2(0.0) Introduced on the MXL 10/40GbE Switch IO Module.
Usage Information
This command provides the exibility to ne-tune the timer values based on individual interface needs when ISIS
BFD is congured in CONFIGURATION mode. Any timer values specied with this command overrides timers set
using the bfd all-neighbors command. Using the no form of this command does not disable BFD if BFD is
congured in CONFIGURATION mode.
To disable BFD on a specic interface while BFD is congured in CONFIGURATION mode, use the keyword
disable.
neighbor bfd
Explicitly enable a BFD session with a BGP neighbor or a BGP peer group.
Syntax
neighbor {ip-address | peer-group-name} bfd
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).
280 Bidirectional Forwarding Detection (BFD)