RFC 5462 on Multiprotocol Label Switching (MPLS) Label Stack Entry: "EXP" Field Renamed to "Traffic Class" Field
rfc-editor@rfc-editor.org Wed, 25 February 2009 23:31 UTC
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Subject: RFC 5462 on Multiprotocol Label Switching (MPLS) Label Stack Entry: "EXP" Field Renamed to "Traffic Class" Field
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Date: Wed, 25 Feb 2009 15:31:00 -0800
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A new Request for Comments is now available in online RFC libraries. RFC 5462 Title: Multiprotocol Label Switching (MPLS) Label Stack Entry: "EXP" Field Renamed to "Traffic Class" Field Author: L. Andersson, R. Asati Status: Standards Track Date: February 2009 Mailbox: loa@pi.nu, rajiva@cisco.com Pages: 9 Characters: 19372 Updates: RFC3032, RFC3270, RFC3272, RFC3443, RFC3469, RFC3564, RFC3985, RFC4182, RFC4364, RFC4379, RFC4448, RFC4761, RFC5129 I-D Tag: draft-ietf-mpls-cosfield-def-08.txt URL: http://www.rfc-editor.org/rfc/rfc5462.txt The early Multiprotocol Label Switching (MPLS) documents defined the form of the MPLS label stack entry. This includes a three-bit field called the "EXP field". The exact use of this field was not defined by these documents, except to state that it was to be "reserved for experimental use". Although the intended use of the EXP field was as a "Class of Service" (CoS) field, it was not named a CoS field by these early documents because the use of such a CoS field was not considered to be sufficiently defined. Today a number of standards documents define its usage as a CoS field. To avoid misunderstanding about how this field may be used, it has become increasingly necessary to rename this field. This document changes the name of the field to the "Traffic Class field" ("TC field"). In doing so, it also updates documents that define the current use of the EXP field. [STANDARDS TRACK] This document is a product of the Multiprotocol Label Switching Working Group of the IETF. This is now a Proposed Standard Protocol. STANDARDS TRACK: This document specifies an Internet standards track protocol for the Internet community,and requests discussion and suggestions for improvements. Please refer to the current edition of the Internet Official Protocol Standards (STD 1) for the standardization state and status of this protocol. Distribution of this memo is unlimited. This announcement is sent to the IETF-Announce and rfc-dist lists. To subscribe or unsubscribe, see http://www.ietf.org/mailman/listinfo/ietf-announce http://mailman.rfc-editor.org/mailman/listinfo/rfc-dist For searching the RFC series, see http://www.rfc-editor.org/rfcsearch.html. For downloading RFCs, see http://www.rfc-editor.org/rfc.html. Requests for special distribution should be addressed to either the author of the RFC in question, or to rfc-editor@rfc-editor.org. Unless specifically noted otherwise on the RFC itself, all RFCs are for unlimited distribution. The RFC Editor Team USC/Information Sciences Institute