Related Topics Basic MPLS Configuration Tasks on page 276•
• Additional RSVP-TE Configuration Tasks on page 293
• mpls rsvp signalling node-hello
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.
•
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
•
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
•
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
•
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
Copyright © 2010, Juniper Networks, Inc.300
JunosE 11.2.x BGP and MPLS Configuration Guide
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