Name: draft-ietf-bfd-mpls-00
Title: BFD For MPLS LSPs
State: Active
Authors: Rahul Aggarwal
Group: Bidirectional Forwarding Detection (bfd)
Date: 2004-07-12
One desirable application of Bi-directional Forwarding Detection (BFD) is
to detect a MPLS LSP data plane failure. LSP-Ping is an existing mechanism
for detecting MPLS data plane failures and for verifying the MPLS LSP data
plane against the control plane. BFD can be used for the former, but not
for the latter. However the control plane processing required for BFD
control packets is relatively smaller than the processing required for
LSP-Ping messages. A combination of LSP-Ping and BFD can be used to provide
faster data plane failure detection and/or make it possible to provide such
detection on a greater number of LSPs. This document describes the
applicability of BFD in relation to LSP-Ping for this application. It also
describes procedures for using BFD in this environment.
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