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Information on BCP 87 ยป RFC Editor

BCP 87 RFC 3785 Use of Interior Gateway Protocol (IGP) Metric as a second MPLS Traffic Engineering (TE) Metric, May 2004
File formats:
Status:
BEST CURRENT PRACTICE
Authors:
F. Le Faucheur
R. Uppili
A. Vedrenne
P. Merckx
T. Telkamp
Stream:
IETF
Source:
tewg (subip)

Cite this BCP: TXT  |  XML

Discuss this RFC: Send questions or comments to the mailing list iesg@ietf.org

Other actions: Submit Errata  |  Find IPR Disclosures from the IETF  |  View History of RFC

Abstract

This document describes a common practice on how the existing metric of Interior Gateway Protocols (IGP) can be used as an alternative metric to the Traffic Engineering (TE) metric for Constraint Based Routing of MultiProtocol Label Switching (MPLS) Traffic Engineering tunnels. This effectively results in the ability to perform Constraint Based Routing with optimization of one metric (e.g., link bandwidth) for some Traffic Engineering tunnels (e.g., Data Trunks) while optimizing another metric (e.g., propagation delay) for some other tunnels with different requirements (e.g., Voice Trunks). No protocol extensions or modifications are required. This text documents current router implementations and deployment practices. This document specifies an Internet Best Current Practices for the Internet Community, and requests discussion and suggestions for improvements.

For the definition of Status, see RFC 2026.

For the definition of Stream, see RFC 8729.


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