PGM Reliable Transport Protocol Specification (RFC3208)
Original Publication Date: 2001-Dec-01
Included in the Prior Art Database: 2001-Dec-12
Publishing Venue
Internet Society Requests For Comment (RFCs)
Related People
T. Speakman: AUTHOR [+13]
Abstract
Pragmatic General Multicast (PGM) is a reliable multicast transport protocol for applications that require ordered or unordered, duplicate-free, multicast data delivery from multiple sources to multiple receivers. PGM guarantees that a receiver in the group either receives all data packets from transmissions and repairs, or is able to detect unrecoverable data packet loss. PGM is
Network Working Group T. Speakman
Request for Comments: 3208 Cisco Systems
Category: Experimental J. Crowcroft
UCL
J. Gemmell
Microsoft
D. Farinacci
Procket Networks
S. Lin
Juniper Networks
D. Leshchiner
TIBCO Software
M. Luby
Digital Fountain
T. Montgomery
Talarian Corporation
L. Rizzo
University of Pisa
A. Tweedly
N. Bhaskar
R. Edmonstone
R. Sumanasekera
L. Vicisano
Cisco Systems
December 2001
PGM Reliable Transport Protocol Specification
Status of this Memo
This memo defines an Experimental Protocol for the Internet
community. It does not specify an Internet standard of any kind.
Discussion and suggestions for improvement are requested.
Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2001). All Rights Reserved.
Abstract
Pragmatic General Multicast (PGM) is a reliable multicast transport
protocol for applications that require ordered or unordered,
duplicate-free, multicast data delivery from multiple sources to
multiple receivers. PGM guarantees that a receiver in the group
either receives all data packets from transmissions and repairs, or
is able to detect unrecoverable data packet loss. PGM is
Speakman, et. al. Experimental [Page 1]
RFC 3208 PGM Reliable Transport Protocol December 2001
specifically intended as a workable solution for multicast
applications with basic reliability requirements. Its central design
goal is simplicity of operation with due regard for scalability and
network efficiency.
Table of Contents
1. Introduction and Overview .................................. 3
2. Architectural Description .................................. 9
3. Terms and Concepts ......................................... 12
4. Procedures - General ....................................... 18
5. Procedures - Sources ....................................... 19
6. Procedures - Receivers ..................................... 22
7. Procedures - Network Elements .............................. 27
8. Packet Formats ............................................. 31
9. Options .................................................... 40
10. Security Considerations .................................... 56
11. Appendix A - Forward Error Correction ...................... 58
12. Appendix B - Support for Congestion Control ................ 72
13. Appendix C - SPM Requests .................................. 79
14. Appendix D - Poll Mechanism ................................ 82
15. Appendix E - Implosion Prevention .......................... 92
16. Appendix F - Transmit Window Example ....................... 98
17 Appendix G - Applicability Statement ....................... 103
18. Abbreviations .............................................. 105
19. Acknowledgments ............................................ 106
20. References ................................................. 106
21. Authors' Addresses.......................................... 108
22. Full Copyright Statement ................................... 111
Nota Bene:
The p...