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bfd-liveness-detection

Syntax



bfd-liveness-detection {


detection-time {
threshold milliseconds;
}


holddown-interval milliseconds;
local-address ip-address;
minimum-interval milliseconds;
minimum-receive-interval milliseconds;
minimum-receive-ttl number;
multiplier number;
neighbor address;
no-adaptation;


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


version (1 | automatic);
}

Hierarchy Level



[edit logical-systems logical-system-name routing-instances routing-instance-name routing-options
rib routing-table-name static route destination-prefix],
[edit logical-systems logical-system-name routing-instances routing-instance-name routing-options
rib routing-table-name static route destination-prefix qualified-next-hop (interface-name | address)],
[edit logical-systems logical-system-name routing-instances routing-instance-name routing-options
static route destination-prefix],
[edit logical-systems logical-system-name routing-instances routing-instance-name routing-options
static route destination-prefix qualified-next-hop
(interface-name | address)],
[edit logical-systems logical-system-name routing-options rib routing-table-name static
route destination-prefix],
[edit logical-systems logical-system-name routing-options rib routing-table-name static
route destination-prefix qualified-next-hop (interface-name | address)],
[edit logical-systems logical-system-name routing-options static route destination-prefix],
[edit logical-systems logical-system-name routing-options static route destination-prefix qualified-next-hop (interface-name | address)],
[edit routing-instances routing-instance-name routing-options rib routing-table-name static
route destination-prefix],
[edit routing-instances routing-instance-name routing-options rib routing-table-name static
route destination-prefix qualified-next-hop (interface-name | address)],
[edit routing-instances routing-instance-name routing-options static route destination-prefix qualified-next-hop (interface-name | address)],
[edit routing-instances routing-instance-name routing-options static route destination-prefix],
[edit routing-options rib routing-table-name static route destination-prefix],
[edit routing-options rib routing-table-name static route destination-prefix qualified-next-hop
(interface-name | address)],
[edit routing-options static route destination-prefix],
[edit routing-options static route destination-prefix qualified-next-hop (interface-name | address)]

Release Information

Statement introduced before JUNOS Release 7.4.

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

local-address statement introduced in JUNOS Release 8.2.

minimum-receive-ttl statement introduced in JUNOS Release 8.2.

Support for logical routers introduced in JUNOS Release 8.3.

holddown-interval statement introduced in JUNOS Release 8.5.

no-adaptation statement introduced in JUNOS Release 9.0.

Support for IPv6 static routes introduced in JUNOS Release 9.1.

Description

Configure bidirectional failure detection timers for static routes.

Options

detection-time threshold milliseconds—Configure a threshold. When the Bidirectional Forwarding Detection (BFD) protocol 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.
holddown-interval milliseconds—Configure an interval specifying how long a BFD session must remain up before a state change notification is 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 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 number of hello packets not received by the neighbor that causes the originating interface to be declared down.
version—Configure the BFD protocol version to detect.
local-address ip-address—Enable a multihop BFD session and configure the source address for the BFD session.
minimum-receive-ttl number—Configure the time-to-live (TTL) for the multihop BFD session.
neighbor address—Configure a next-hop address for the BFD session for a next hop specified as an interface name.
no-adaptation—Specify for BFD sessions not to 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 the minimum interval at which the local router transmits hello packets to a neighbor with which it has established a BFD session.

Usage Guidelines

See Configuring Bidirectional Forwarding Detection.

Required Privilege Level

routing—To view this statement in the configuration.

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

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