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bfd-liveness-detection

Syntax



bfd-liveness-detection {


detection-time {
threshold milliseconds;
}


minimum-interval milliseconds;
minimum-receive-interval milliseconds;
no-adaptation;


transmit-interval {
threshold milliseconds;
minimum-interval milliseconds;
}


multiplier number;
version (1 | automatic);
}

Hierarchy Level



[edit logical-systems logical-system-name protocols isis interface interface-name],
[edit logical-systems logical-system-name routing-instances routing-instance-name protocols
isis interface interface-name],
[edit protocols isis interface interface-name],
[edit routing-instances routing-instance-name protocols isis interface interface-name]

Release Information

Statement introduced before JUNOS Release 7.4.

detection-time threshold and transmit-interval threshold options added in JUNOS Release 8.2.

Support for logical systems introduced in JUNOS Release 8.3.

no-adaptation statement introduced in JUNOS Release 9.0.

Description

Configure bidirectional failure detection timers.

Options

detection-time threshold milliseconds—Configure a threshold. When the BFD session detection time adapts to a value equal to or greater than the threshold, a single trap and a single system log message are sent.
minimum-interval milliseconds—Configure the minimum intervals at which the local router transmits a hello packet and then expects to receive a reply from the neighbor with which it has established a BFD session.
minimum-receive-interval milliseconds—Configure only the minimum interval at which the local router expects to receive a reply from a neighbor with which it has established a BFD session.
multiplier number—Configure the number hello packets not received by a neighbor that causes the originating interface to be declared down.
no-adaptation—Specify that BFD sessions not adapt to changing network conditions. We recommend that you not disable BFD adaptation unless it is preferable not to have BFD adaptation enabled in your network.
transmit-interval threshold milliseconds—Configure a threshold. When the BFD session transmit interval adapts to a value greater than the threshold, a single trap and a single system log message are sent. The interval threshold must be greater than the minimum transmit interval.
transmit-interval minimum-interval milliseconds—Configure only the minimum interval at which the router sends hello packets to a neighbor with which it has established a BFD session.
version—Specify the BFD version to detect.

Usage Guidelines

See Configuring the BFD Protocol.

Required Privilege Level

routing—To view this statement in the configuration.

routing-control—To add this statement to the configuration.

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