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I-D ACTION:draft-ietf-mpls-cr-ldp-06.txt

A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF.

	Title		: Constraint-Based LSP Setup using LDP
	Author(s)	: B. Jamoussi et al.
	Filename	: draft-ietf-mpls-cr-ldp-06.txt
	Pages		: 38
	Date		: 28-Nov-01
Label Distribution Protocol (LDP) is defined in [1] for distribution
of labels inside one MPLS domain.  One of the most important
services that may be offered using MPLS in general and LDP in
particular is support for constraint-based routing of traffic across
the routed network. Constraint-based routing offers the opportunity
to extend the information used to setup paths beyond what is
available for the routing protocol. For instance, an LSP can be
setup based on explicit route constraints, QoS constraints, and
other constraints. Constraint-based routing (CR) is a mechanism used
to meet Traffic Engineering requirements that have been proposed by
[2], [3] and [4]. These requirements may be met by extending LDP for
support of constraint-based routed label switched paths (CR-LSPs).
Other uses for CR-LSPs include MPLS-based VPNs [5]. More information
about the applicability of CR-LDP can be found in [6].
This draft specifies mechanisms and TLVs for support of CR-LSPs
using LDP.

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