RTP Control Protocol (RTCP) Extensions for Single-Source Multicast Sessions with Unicast Feedback
RFC 5760
Document | Type |
RFC - Proposed Standard
(February 2010; Errata)
Updated by RFC 6128
Was draft-ietf-avt-rtcpssm (avt WG)
|
|
---|---|---|---|
Authors | Eve Schooler , Joerg Ott , Julian Chesterfield | ||
Last updated | 2020-01-21 | ||
Replaces | draft-chesterfield-avt-rtcpssm | ||
Stream | IETF | ||
Formats | plain text html pdf htmlized with errata bibtex | ||
Stream | WG state | (None) | |
Document shepherd | No shepherd assigned | ||
IESG | IESG state | RFC 5760 (Proposed Standard) | |
Consensus Boilerplate | Unknown | ||
Telechat date | |||
Responsible AD | Cullen Jennings | ||
Send notices to | csp@csperkins.org, magnus.westerlund@ericsson.com, eve_schooler@acm.org |
Internet Engineering Task Force (IETF) J. Ott Request for Comments: 5760 Aalto University Category: Standards Track J. Chesterfield ISSN: 2070-1721 University of Cambridge E. Schooler Intel February 2010 RTP Control Protocol (RTCP) Extensions for Single-Source Multicast Sessions with Unicast Feedback Abstract This document specifies an extension to the Real-time Transport Control Protocol (RTCP) to use unicast feedback to a multicast sender. The proposed extension is useful for single-source multicast sessions such as Source-Specific Multicast (SSM) communication where the traditional model of many-to-many group communication is either not available or not desired. In addition, it can be applied to any group that might benefit from a sender-controlled summarized reporting mechanism. Status of This Memo This is an Internet Standards Track document. This document is a product of the Internet Engineering Task Force (IETF). It represents the consensus of the IETF community. It has received public review and has been approved for publication by the Internet Engineering Steering Group (IESG). Further information on Internet Standards is available in 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/rfc5760. Copyright Notice Copyright (c) 2010 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. Code Components extracted from this document must Ott, et al. Standards Track [Page 1] RFC 5760 RTCP with Unicast Feedback February 2010 include Simplified BSD License text as described in Section 4.e of the Trust Legal Provisions and are provided without warranty as described in the Simplified BSD License. This document may contain material from IETF Documents or IETF Contributions published or made publicly available before November 10, 2008. The person(s) controlling the copyright in some of this material may not have granted the IETF Trust the right to allow modifications of such material outside the IETF Standards Process. Without obtaining an adequate license from the person(s) controlling the copyright in such materials, this document may not be modified outside the IETF Standards Process, and derivative works of it may not be created outside the IETF Standards Process, except to format it for publication as an RFC or to translate it into languages other than English. Table of Contents 1. Introduction ....................................................3 2. Conventions and Acronyms ........................................4 3. Definitions .....................................................5 4. Basic Operation .................................................6 5. Packet Types ...................................................10 6. Simple Feedback Model ..........................................11 7. Distribution Source Feedback Summary Model .....................13 8. Mixer/Translator Issues ........................................36 9. Transmission Interval Calculation ..............................37 10. SDP Extensions ................................................39 11. Security Considerations .......................................41 12. Backwards Compatibility .......................................51 13. IANA Considerations ...........................................51 14. References ....................................................53 Appendix A. Examples for Sender-Side Configurations ...............57 Appendix B. Distribution Report Processing at the Receiver ........60 Ott, et al. Standards Track [Page 2] RFC 5760 RTCP with Unicast Feedback February 2010 1. Introduction The Real-time Transport Protocol (RTP) [1] provides a real-time transport mechanism suitable for unicast or multicast communication between multimedia applications. Typical uses of RTP are for real- time or near real-time group communication of audio and video data streams. An important component of the RTP protocol is the controlShow full document text