I-D Action:draft-ietf-ccamp-path-key-ero-04.txt

Internet-Drafts@ietf.org Sat, 07 March 2009 10:30 UTC

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Subject: I-D Action:draft-ietf-ccamp-path-key-ero-04.txt
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A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Common Control and Measurement Plane Working Group of the IETF.

	Title           : RSVP Extensions for Path Key Support
	Author(s)       : A. Farrel, et al.
	Filename        : draft-ietf-ccamp-path-key-ero-04.txt
	Pages           : 14
	Date            : 2009-03-07

The paths taken by Multiprotocol Label Switching (MPLS) and
Generalized MPLS (GMPLS) Traffic Engineering (TE) Label Switched
Paths (LSPs) may be computed by Path Computation Elements (PCEs).
Where the TE LSP crosses multiple domains, such as Autonomous Systems
(ASes), the path may be computed by multiple PCEs that cooperate,
with each responsible for computing a segment of the path.

To preserve confidentiality of topology within each AS, the PCEs
support a mechanism to hide the contents of a segment of a path (such
as the segment of the path that traverses an AS), called the
Confidential Path Segment (CPS), by encoding the contents as a Path
Key Subobject (PKS) and embedding this subobject within the result of
its path computation.

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