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Title : Carrying a Contract Identifier in the PCE communication Protocol (PCEP)
Author(s) : J. Le Roux, R. Jacob
Filename : draft-leroux-pce-contract-id-00.txt
Pages : 9
Date : 2007-2-27
The Path Computation Element (PCE) based architecture can be used for
computing Traffic Engineered Label Switched Paths (TE LSP) that
traverse multiple Autonomous Systems (AS) in MultiProtocol Label
Switching (MPLS) and Generalized MPLS (GMPLS) networks. This requires
communication between PCEs in each AS, based upon on the PCE
communication Protocol (PCEP). When ASes belong to distinct service
providers, a per-service negotiation and activation procedure may be
required before starting PCE based path computation. For the sake of
illustration, the IPSphere Forum (IPSF) is currently specifying an
architecture so as to automate the negotiation and activation of such
an inter-provider TE LSP service. The result of such negotiation is a
per-service contract identifier that needs to be carried in PCEP, so
that PCEs can apply inter-provider path computation policies. For
that purpose, this draft defines an extension to the PCEP protocol so
as to carry a contract ID in request messages.
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