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bfd-liveness-detection (Routing Options Static Route)

Syntax

Hierarchy Level

Release Information

Statement introduced before Junos OS Release 7.4.

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

local-address statement introduced in Junos OS Release 8.2.

minimum-receive-ttl statement introduced in Junos OS Release 8.2.

Support for logical routers introduced in Junos OS Release 8.3.

holddown-interval statement introduced in Junos OS Release 8.5.

no-adaptation statement introduced in Junos OS Release 9.0.

Support for IPv6 static routes introduced in Junos OS Release 9.1.

authentication algorithm, authentication key-chain, and authentication loose-check statements introduced in Junos OS Release 9.6.

Statement introduced in Junos OS Release 12.1 for the QFX Series.

Statement introduced in Junos OS Release 12.3 for ACX Series routers.

Description

Configure bidirectional failure detection timers and authentication criteria for static routes.

Options

authentication algorithm algorithm-name —Configure the algorithm used to authenticate the specified BFD session: simple-password, keyed-md5, keyed-sha-1, meticulous-keyed-md5, or meticulous-keyed-sha-1.

authentication key-chain key-chain-name—Associate a security key with the specified BFD session using the name of the security keychain. The name you specify must match one of the keychains configured in the authentication-key-chains key-chain statement at the [edit security] hierarchy level.

authentication loose-check—(Optional) Configure loose authentication checking on the BFD session. Use only for transitional periods when authentication may not be configured at both ends of the BFD session.

detection-time threshold milliseconds—Configure a threshold for the adaptation of the BFD session detection time. When the 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. If the BFD session goes down and then comes back up during the hold-down interval, the timer is restarted.

local-address ip-address—Enable a multihop BFD session and configure the source address for the BFD session.

minimum-interval milliseconds—Configure the minimum interval after which the local routing device transmits a hello packet and then expects to receive a reply from the neighbor with which it has established a BFD session. Optionally, instead of using this statement, you can configure the minimum transmit and receive intervals separately using the transmit-interval minimum-interval and minimum-receive-interval statements.

minimum-receive-interval milliseconds—Configure the minimum interval after which the routing device expects to receive a reply from a neighbor with which it has established a BFD session. Optionally, instead of using this statement, you can configure the minimum receive interval using the minimum-interval statement at the [edit routing-options static route destination-prefix bfd-liveness-detection] hierarchy level.

minimum-receive-ttl number—Configure the time to live (TTL) for the multihop BFD session.

multiplier number—Configure number of hello packets not received by the neighbor that causes the originating interface to be declared down.

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 the threshold for the adaptation of the BFD session transmit interval. When the transmit interval adapts to a value greater than the threshold, a single trap and a single system 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 routing device transmits hello packets to a neighbor with which it has established a BFD session. Optionally, instead of using this statement, you can configure the minimum transmit interval using the minimum-interval statement at the [edit routing-options static route destination-prefix bfd-liveness-detection] hierarchy level.

version—Configure the BFD version to detect: 1 (BFD version 1) or automatic (autodetect the BFD version).

Required Privilege Level

routing—To view this statement in the configuration.

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