Explicit Congestion Marking in MPLS
RFC 5129, “Explicit Congestion Marking in MPLS”, is a Proposed Standard document published in January 2008 by B. Davie, B. Briscoe, J. Tay. It updates RFC 3032. It has since been updated by RFC 5462. The canonical text is published by the RFC Editor.
Abstract
RFC 3270 defines how to support the Diffserv architecture in MPLS networks, including how to encode Diffserv Code Points (DSCPs) in an MPLS header. DSCPs may be encoded in the EXP field, while other uses of that field are not precluded. RFC 3270 makes no statement about how Explicit Congestion Notification (ECN) marking might be encoded in the MPLS header. This document defines how an operator might define some of the EXP codepoints for explicit congestion notification, without precluding other uses. [STANDARDS-TRACK]
What “Proposed Standard” means
An entry-level standards-track specification: stable, peer-reviewed and a solid basis for implementation, though it may still evolve before becoming an Internet Standard.
The canonical text of RFC 5129 is hosted at rfc-editor.org. Available in TXT,HTML.
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