Configuring the BFD Protocol for RSVP-TE
Configure the Bidirectional Forwarding Detection (BFD) protocol for RSVP-TE to more
rapidly detect failures in a network and enable faster rerouting around the failures.
You can modify the BFD timers for more or less aggressive failure detection.
When configured, BFD liveness detection is established with all BFD-enabled RSVP-TE
peers associated with that RSVP-TE major interface.
NOTE: Before the router can use the mpls rsvp bfd-liveness-detection command,
you must specify a BFD license key. To view an already configured license, use the
show license bfd command.
To enable BFD (bidirectional forwarding detection) on an RSVP-TE major interface:
1. Access the interface.
host1(config)#interface fastEthernet 4/3
2. Enable BFD liveness detection.
host1(config-if)#mpls rsvp bfd-liveness-detection
The peers in an RSVP-TE adjacency use the BFD timer values to negotiate the actual
transmit intervals for BFD packets.
â– Use the minimum-transmit-interval keyword to specify the interval at which
the local peer proposes to transmit BFD control packets to the remote peer.
host1(config-if)#mpls rsvp bfd-liveness-detection minimum-transmit-interval 400
â– Use the minimum-receive-interval keyword to specify the minimum interval
at which the local peer must receive BFD control packets from the remote peer.
host1(config-if)#mpls rsvp bfd-liveness-detection minimum-receive-interval 400
â– Use the minimum-interval keyword to specify the same value for both the
transmit and receive intervals. Configuring a minimum interval has the same
effect as configuring the minimum receive interval and the minimum transmit
interval to the same value.
host1(config-if)#mpls rsvp bfd-liveness-detection minimum-interval 400
â– Use the multiplier keyword to specify the detection multiplier value, which
roughly equivalent to the number of packets that can be missed before the BFD
session is declared to be down. The calculated BFD liveness detection interval
can be different on each peer.
host1(config-if)#mpls rsvp bfd-liveness-detection multiplier 15
294 â– Configuring the BFD Protocol for RSVP-TE
JUNOSe 11.1.x BGP and MPLS Configuration Guide
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