Report from the IAB/IRTF Workshop on Congestion Control for Interactive Real-Time Communication
RFC 7295
| Document | Type |
RFC - Informational
(July 2014; No errata)
Was draft-iab-cc-workshop-report (individual)
|
|
|---|---|---|---|
| Last updated | 2014-07-03 | ||
| Replaces | draft-tschofenig-cc-workshop-report | ||
| Stream | IAB | ||
| Formats | plain text pdf html bibtex | ||
| Stream | IAB state | Published RFC | |
| Consensus Boilerplate | Yes | ||
| RFC Editor Note | (None) | ||
Internet Architecture Board (IAB) H. Tschofenig
Request for Comments: 7295 L. Eggert
Category: Informational Z. Sarker
ISSN: 2070-1721 July 2014
Report from the IAB/IRTF Workshop on Congestion Control
for Interactive Real-Time Communication
Abstract
This document provides a summary of the IAB/IRTF Workshop on
'Congestion Control for Interactive Real-Time Communication', which
took place in Vancouver, Canada, on July 28, 2012. The main goal of
the workshop was to foster a discussion on congestion control
mechanisms for interactive real-time communication. This report
summarizes the discussions and lists recommendations to the Internet
Engineering Task Force (IETF) community.
The views and positions in this report are those of the workshop
participants and do not necessarily reflect the views and positions
of the authors, the Internet Architecture Board (IAB), or the
Internet Research Task Force (IRTF).
Status of This Memo
This document is not an Internet Standards Track specification; it is
published for informational purposes.
This document is a product of the Internet Architecture Board (IAB)
and represents information that the IAB has deemed valuable to
provide for permanent record. It represents the consensus of the
Internet Architecture Board (IAB). Documents approved for
publication by the IAB are not a candidate for any level of Internet
Standard; see Section 2 of RFC 5741.
Information about the current status of this document, any errata,
and how to provide feedback on it may be obtained at
http://www.rfc-editor.org/info/rfc7295.
Tschofenig, et al. Informational [Page 1]
RFC 7295 Congestion Control Workshop Report July 2014
Copyright Notice
Copyright (c) 2014 IETF Trust and the persons identified as the
document authors. All rights reserved.
This document is subject to BCP 78 and the IETF Trust's Legal
Provisions Relating to IETF Documents
(http://trustee.ietf.org/license-info) in effect on the date of
publication of this document. Please review these documents
carefully, as they describe your rights and restrictions with respect
to this document.
Table of Contents
1. Introduction . . . . . . . . . . . . . . . . . . . . . . . . 3
2. Workshop Structure . . . . . . . . . . . . . . . . . . . . . 5
2.1. History and Current Challenges . . . . . . . . . . . . . 5
2.2. Simulations and Measurements . . . . . . . . . . . . . . 8
2.3. Design Aspects of Problems and Solutions . . . . . . . . 9
3. Recommendations . . . . . . . . . . . . . . . . . . . . . . . 13
3.1. Changes to Network Infrastructure . . . . . . . . . . . . 14
3.2. Avoiding Self-Inflicted Queuing . . . . . . . . . . . . . 15
4. Security Considerations . . . . . . . . . . . . . . . . . . . 17
5. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . . 17
6. Informative References . . . . . . . . . . . . . . . . . . . 17
Appendix A. Program Committee . . . . . . . . . . . . . . . . . 22
Appendix B. Workshop Material . . . . . . . . . . . . . . . . . 22
Appendix C. Accepted Position Papers . . . . . . . . . . . . . . 22
Appendix D. Workshop Participants . . . . . . . . . . . . . . . 24
Tschofenig, et al. Informational [Page 2]
RFC 7295 Congestion Control Workshop Report July 2014
1. Introduction
The Internet Architecture Board (IAB) holds occasional workshops
designed to consider long-term issues and strategies for the
Internet, and to suggest future directions for the Internet
architecture. This long-term planning function of the IAB is
complementary to the ongoing engineering efforts performed by working
groups of the Internet Engineering Task Force (IETF), under the
leadership of the Internet Engineering Steering Group (IESG) and area
directorates.
Any application that sends significant amounts of data over the
Internet is expected to implement reasonable congestion control
behavior. The goals for congestion control are well understood and
documented in RFC 2914 [2] and RFC 5405 [1]:
1. Preventing congestion collapse.
2. Allowing multiple flows to share the network fairly.
The Internet has been used for interactive real-time communication
for decades, most of which is being transmitted using the Real-Time
Transport Protocol (RTP) over UDP, often over provisioned capacity
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