Users Guide

command. The no version of this command deletes the configured global settings and returns to the
default values.
If you enable BFD on a specific static route, use the bfd interval command to configure the BFD
parameters for that specific static route.
Example
OS10(config)# bfd interval 250 min_rx 300 multiplier 4 role passive
Supported
releases
10.4.1.0 or later
ip ospf bfd all-neighbors
Enables and configures the default BFD parameters for all OSPFv2 neighbors in this interface.
Syntax
ip ospf bfd all-neighbors [disable|[interval millisec min_rx min_rx
multiplier role {active | passive}]]
Parameters
● disable — Disables the BFD session on an interface alone.
● 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 CONFIG-INTERFACE
Usage
Information
● This command can be used to enable or disable BFD for an interface associated with OSPFv2.
Interface level BFD configuration takes precedent over the OSPF global level BFD configuration. If
there is no BFD configuration present at the interface level global OSPF BFD configuration will be
inherited.
Example
(conf-if-eth1/1/1)#ip ospf bfd all-neighbors
Supported
releases
10.4.2E or later
ipv6 ospf bfd all-neighbors
Enables and configures the default BFD parameters for all OSPFv3 neighbors in this interface.
Syntax
ipv6 ospf bfd all-neighbors [disable|[interval millisec min_rx min_rx
multiplier role {active | passive}]]
To disable default BFD parameters for all OSPFv3 neighbors using the no ipv6 ospf bfd all-
neighbors.
Parameters
● disable — Disables the BFD session on an interface alone.
● interval milliseconds — Enter the time interval for sending control packets to BFD peers,
from 100 to 1000. You cannot configure a value that is less than 100 milliseconds.
784 Layer 3