A New Internet-Draft is available from the on-line Internet-Drafts directories.
This draft is a work item of the Multiprotocol Label Switching Working Group of the IETF.
Title : Multi-Protocol Label Switching (MPLS) label stack entry: "EXP" field renamed to "Traffic Class" field
Author(s) : L. Andersson, R. Asati
Filename : draft-ietf-mpls-cosfield-def-08.txt
Pages : 18
Date : 2008-12-05
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 the 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 this field.
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