RFC 5441

A Backward-Recursive PCE-Based Computation (BRPC) Procedure to Compute Shortest Constrained Inter-Domain Traffic Engineering Label Switched Paths, April 2009

Canonical URL:
https://www.rfc-editor.org/rfc/rfc5441.txt
File formats:
Plain TextPDF
Status:
PROPOSED STANDARD
Authors:
JP. Vasseur, Ed.
R. Zhang
N. Bitar
JL. Le Roux
Stream:
IETF
Source:
pce (rtg)

Cite this RFC: TXT  |  XML

DOI:  10.17487/RFC5441

Discuss this RFC: Send questions or comments to pce@ietf.org

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Abstract

The ability to compute shortest constrained Traffic Engineering Label Switched Paths (TE LSPs) in Multiprotocol Label Switching (MPLS) and Generalized MPLS (GMPLS) networks across multiple domains has been identified as a key requirement. In this context, a domain is a collection of network elements within a common sphere of address management or path computational responsibility such as an IGP area or an Autonomous Systems. This document specifies a procedure relying on the use of multiple Path Computation Elements (PCEs) to compute such inter-domain shortest constrained paths across a predetermined sequence of domains, using a backward-recursive path computation technique. This technique preserves confidentiality across domains, which is sometimes required when domains are managed by different service providers. [STANDARDS-TRACK]


For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 4844.


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