Tracking A Link Ldp Peer With Bfd - Alcatel-Lucent 7950 SR User Configuration Manual

Label Distribution Protocol

Tracking a Link LDP Peer with BFD

Tracking of the Hello adjacency to an LDP peer using BFD is supported.
Hello adjacency tracking with BFD is enabled by enabling BFD on an LDP interface:
• config>router>ldp>interface-parameters>interface>enable-bfd
The parameters used for the BFD session, for example, transmit-interval, receive-interval, and
multiplier, are those configured under the IP interface in the existing config>router>interface>bfd
context.
When this command is enabled on an LDP interface, LDP registers with BFD and starts tracking
the LSR-id of all peers it forms Hello adjacencies with over that LDP interface.
The parameters used for the BFD session, for example, transmit-interval, receive-interval, and
multiplier, are those configured under the IP interface in the existing config>router>interface>bfd
context.
When enabled, the LDP hello mechanism is used to determine the remote address to be used for
the BFD session. If a BFD session fails, then the associated LDP adjacency is also declared down
and LDP will immediately begin its reconvergence.
7950 SR OS MPLS Configuration Guide Page 337