Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

An Architecture for Differentiated Service (RFC2475)

IP.com Disclosure Number: IPCOM000003055D
Original Publication Date: 1998-Dec-01
Included in the Prior Art Database: 2000-Sep-13
Document File: 30 page(s) / 89K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

S. Blake: AUTHOR [+6]

Abstract

This document defines an architecture for implementing scalable service differentiation in the Internet. This architecture achieves scalability by aggregating traffic classification state which is conveyed by means of IP-layer packet marking using the DS field [DSFIELD]. Packets are classified and marked to receive a particular per-hop forwarding behavior on nodes along their path. Sophisticated classification, marking, policing, and shaping operations need only be implemented at network boundaries or hosts. Network resources are allocated to traffic streams by service provisioning policies which govern how traffic is marked and conditioned upon entry to a differentiated services-capable network, and how that traffic is forwarded within that network. A wide variety of services can be implemented on top of these building blocks.

This text was extracted from a ASCII document.
This is the abbreviated version, containing approximately 3% of the total text.

Network Working Group S. Blake

Request for Comments: 2475 Torrent Networking Technologies

Category: Informational D. Black

EMC Corporation

M. Carlson

Sun Microsystems

E. Davies

Nortel UK

Z. Wang

Bell Labs Lucent Technologies

W. Weiss

Lucent Technologies

December 1998

An Architecture for Differentiated Services

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 (1998). All Rights Reserved.

Abstract

This document defines an architecture for implementing scalable

service differentiation in the Internet. This architecture achieves

scalability by aggregating traffic classification state which is

conveyed by means of IP-layer packet marking using the DS field

[DSFIELD]. Packets are classified and marked to receive a particular

per-hop forwarding behavior on nodes along their path. Sophisticated

classification, marking, policing, and shaping operations need only

be implemented at network boundaries or hosts. Network resources are

allocated to traffic streams by service provisioning policies which

govern how traffic is marked and conditioned upon entry to a

differentiated services-capable network, and how that traffic is

forwarded within that network. A wide variety of services can be

implemented on top of these building blocks.

Table of Contents

1. Introduction ................................................. 2

1.1 Overview ................................................. 2

1.2 Terminology ............................................... 4

1.3 Requirements .............................................. 8

1.4 Comparisons with Other Approaches ......................... 9

2. Differentiated Services Architectural Model .................. 12

2.1 Differentiated Services Domain ............................ 12

2.1.1 DS Boundary Nodes and Interior Node...