Connectivity Guide

Supported releases 10.4.1.0 or later
bfd all-neighbors
Congures all BFD session parameters established between neighbors discovered by an L3 protocol.
Syntax
bfd all-neighbors [milliseconds min_rx milliseconds multiplier number role
{active | passive}]
Parameters
• interval milliseconds — Enter the time interval for sending control packets to BFD peers, from 100 to
1000. Dell EMC recommends using more than 100 milliseconds.
• min_rx milliseconds — Enter the maximum waiting time for receiving control packets from BFD peers,
from 100 to 1000. Dell EMC recommends using more than 100 milliseconds.
•
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
Layer 3 423