Connectivity Guide

• multiplier number — Enter the maximum number of consecutive packets that must not be received
from a BFD peer before the session state changes to Down, from 3 to 50.
• role {active | passive} — Enter active if the router initiates BFD sessions. Both BFD peers can be
active at the same time. Enter passive if the router does not initiate BFD sessions, and only responds to a
request from an active BFD to initialize a session.
Default
The time interval for sending control packets to BFD peers is 200 milliseconds.
The maximum waiting time for receiving control packets from BFD peers is 200 milliseconds.
The number of consecutive packets that must be received from a BFD peer is 3.
The BFD role is active
Command Mode ROUTER-OSPF
Usage Information
• Use the bfd all-neighbors command to congure BFD sessions between discovered neighbors. The
BFD session parameters you congure override the global session parameters congured with the bfd
interval
command. To disable BFD and ignore the congured bfd all-neighbors settings for a
specied neighbor, enter the bfd disable command in ROUTER-NEIGHBOR mode.
• To remove the congured all-neighbors settings for all BGP neighbors, enter the no version of the command.
To return to the default values, enter the bfd all-neighbors command.
Example
OS10(conf-ospf-bgp)# bfd all-neighbors interval 250 min_rx 300 multiplier 4
role passive
Supported releases 10.4.1.0 or later
bfd disable
Ignores the congured bfd all-neighbors settings and disables BFD for a specied neighbor.
Syntax
bfd disable
Parameters None
Default Not congured
Command Mode ROUTER-NEIGHBOR
Usage Information Use the neighbor ip-address command in ROUTER-BGP mode to specify a neighbor. Use the bfd
disable command to disable BFD sessions with the neighbor.
Example
OS10(conf)# router bgp 1
OS10(config-router-bgp-1)# neighbor 10.1.1.1
OS10(config-router-neighbor)# bfd disable
Supported releases 10.4.1.0 or later
bfd enable
Enables BFD on all interfaces on the switch.
Syntax
bfd enable
Parameters None
316 Layer 3