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IP Multicast in Differentiated Services (DS) Networks (RFC3754)

IP.com Disclosure Number: IPCOM000028031D
Original Publication Date: 2004-Apr-01
Included in the Prior Art Database: 2004-Apr-21
Document File: 35 page(s) / 86K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

R. Bless: AUTHOR [+2]

Abstract

This document discusses the problems of IP Multicast use in Differentiated Services (DS) networks, expanding on the discussion in RFC 2475 ("An Architecture of Differentiated Services"). It also suggests possible solutions to these problems, describes a potential implementation model, and presents simulation results.

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This is the abbreviated version, containing approximately 5% of the total text.

Network Working Group R. Bless

Request for Comments: 3754 Univ. of Karlsruhe

Category: Informational K. Wehrle

Univ. of Tuebingen

April 2004

IP Multicast in Differentiated Services (DS) Networks

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 (2004). All Rights Reserved.

Abstract

This document discusses the problems of IP Multicast use in

Differentiated Services (DS) networks, expanding on the discussion in

RFC 2475 ("An Architecture of Differentiated Services"). It also

suggests possible solutions to these problems, describes a potential

implementation model, and presents simulation results.

Table of Contents

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

1.1. Management of Differentiated Services. . . . . . . . . . 2

2. Problems of IP Multicast in DS Domains . . . . . . . . . . . . 3

2.1. Neglected Reservation Subtree Problem (NRS Problem). . . 4

2.2. Heterogeneous Multicast Groups . . . . . . . . . . . . . 12

2.3. Dynamics of Any-Source Multicast . . . . . . . . . . . . 13

3. Solutions for Enabling IP-Multicast in Differentiated

Services Networks. . . . . . . . . . . . . . . . . . . . . . . 13

3.1. Solution for the NRS Problem . . . . . . . . . . . . . . 13

3.2. Solution for Supporting Heterogeneous Multicast Groups . 15

3.3. Solution for Any-Source Multicast. . . . . . . . . . . . 16

4. Scalability Considerations . . . . . . . . . . . . . . . . . . 16

5. Deployment Considerations. . . . . . . . . . . . . . . . . . . 17

6. Security Considerations. . . . . . . . . . . . . . . . . . . . 18

7. Implementation Model Example . . . . . . . . . . . . . . . . . 18

8. Proof of the Neglected Reservation Subtree Problem . . . . . . 19

8.1. Implementation of the Proposed Solution. . . . . . . . . 20

8.2. Test Environment and Execution . . . . . . . . . . . . . 21

9. Simulative Study of the NRS Problem and Limited Effort PHB . . 23

Bless & Wehrle Informational [Page 1]

RFC 3754 IP Multicast in DS Networks April 2004

9.1. Simulation Scenario. . . . . . . . . . . . . . . . . . . 24

9.2. Simulation Results for Different Router Types. . . . . . 26

10. Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . 31

11. References . . . . . . . . . . . . . . . . . . . . . . . . . . 31

11.1. Normative References . . . . . . . . . . . . . . . . . . 31

11.2. Informative References . . . . . . . . . . . . . . . . . 31

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

13. Full Copyright Statement . . . . . . . . . . . . . . . . . . . 34

1. Introduction

This document discusses the problems of IP Multicast use in

Differentiated Services (DS) networks, expanding on the discussion in

RFC 2475 ("An Architecture of Differentiated Services"). It also

suggests possible solutions to these problems, describes a potential

implementation model, and presents si...