RFC 3260 (rfc3260) - Page 1 of 10

New Terminology and Clarifications for Diffserv

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Network Working Group                                        D. Grossman
Request for Comments: 3260                                Motorola, Inc.
Updates: 2474, 2475, 2597                                     April 2002
Category: Informational


            New Terminology and Clarifications for Diffserv

Status of this Memo

   This memo provides information for the Internet community.  It does
   not specify an Internet standard of any kind.  Distribution of this
   memo is unlimited.

Copyright Notice

   Copyright (C) The Internet Society (2002).  All Rights Reserved.

Abstract

   This memo captures Diffserv working group agreements concerning new
   and improved terminology, and provides minor technical
   clarifications.  It is intended to update RFC 2474, RFC 2475 and RFC
   2597.  When RFCs 2474 and 2597 advance on the standards track, and
   RFC 2475 is updated, it is intended that the revisions in this memo
   will be incorporated, and that this memo will be obsoleted by the new
   RFCs.

1.  Introduction

   As the Diffserv work has evolved, there have been several cases where
   terminology has needed to be created or the definitions in Diffserv
   standards track RFCs have needed to be refined.  Some minor technical
   clarifications were also found to be needed.  This memo was created
   to capture group agreements, rather than attempting to revise the
   base RFCs and recycle them at proposed standard.  It updates in part
   RFC 2474, RFC 2475 and RFC 2597.  RFC 2598 has been obsoleted by RFC
   3246, and clarifications agreed by the group were incorporated in
   that revision.

2. Terminology Related to Service Level Agreements (SLAs)

   The Diffserv Architecture [2] uses the term "Service Level Agreement"
   (SLA) to describe the "service contract... that specifies the
   forwarding service a customer should receive".  The SLA may include
   traffic conditioning rules which (at least in part) constitute a
   Traffic Conditioning Agreement (TCA).  A TCA is "an agreement




Grossman                     Informational
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