Browse Prior Art Database

Integrated Services in the Internet Architecture: an Overview (RFC1633)

IP.com Disclosure Number: IPCOM000002469D
Original Publication Date: 1994-Jun-01
Included in the Prior Art Database: 2001-Nov-09
Document File: 34 page(s) / 89K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Braden: AUTHOR [+3]

Abstract

This memo discusses a proposed extension to the Internet architecture and protocols to provide integrated services, i.e., to support real- time as well as the current non-real-time service of IP. This extension is necessary to meet the growing need for real-time service for a variety of new applications, including teleconferencing, remote seminars, telescience, and distributed simulation.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 4% of the total text.

Network Working Group                                          R. Braden

Request for Comments: 1633                                           ISI

Category: Informational                                         D. Clark

                                                                     MIT

                                                              S. Shenker

                                                              Xerox PARC

                                                               June 1994

     Integrated Services in the Internet Architecture: an Overview

Status of this Memo

   This memo provides information for the Internet community.  This memo

   does not specify an Internet standard of any kind.  Distribution of

   this memo is unlimited.

Abstract

   This memo discusses a proposed extension to the Internet architecture

   and protocols to provide integrated services, i.e., to support real-

   time as well as the current non-real-time service of IP.  This

   extension is necessary to meet the growing need for real-time service

   for a variety of new applications, including teleconferencing, remote

   seminars, telescience, and distributed simulation.

   This memo represents the direct product of recent work by Dave Clark,

   Scott Shenker, Lixia Zhang, Deborah Estrin, Sugih Jamin, John

   Wroclawski, Shai Herzog, and Bob Braden, and indirectly draws upon

   the work of many others.

Table of Contents

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

   2. Elements of the Architecture ...................................3

      2.1 Integrated Services Model ..................................3

      2.2 Reference Implementation Framework .........................6

   3. Integrated Services Model ......................................11

      3.1 Quality of Service Requirements ............................12

      3.2 Resource-Sharing Requirements and Service Models ...........16

      3.3 Packet Dropping ............................................18

      3.4 Usage Feedback .............................................19

      3.5 Reservation Model ..........................................19

   4. Traffic Control Mechanisms .....................................20

      4.1 Basic Functions ............................................20

      4.2 Applying the Mechanisms ....................................23

      4.3 An example .................................................24

   5. Reservation Setup Protocol .....................................25

Braden, Clark & Shenker                                         [Page 1]

RFC 1633            Integrated Services Architecture           June 1994

      5.1 RSVP Overview ..............................................25

      5.2 Routing and Reservations ...................................28

   6. Acknowledgments ................................................30

   References ........................................................31

   Security Considerations ...........................................32

   Authors' Addresses ................................................33

1. Introduction

   The multicasts of IETF meetings across the Internet have formed a

   large-scale experiment in sending digitized voice and video through a

   packet-switched infrastructure.  These highly-visible experiments

   have depended upon three enabling technologies.  (1) Many modern

   workstations now come equipped with built-in multimedia hardware,

   including audio codecs and video frame-grabbers, and the necessary

   video gear is now inexpensive.  (2) IP multicasting...