A Framework for SDP Attributes when Multiplexing
draft-ietf-mmusic-sdp-mux-attributes-00

The information below is for an old version of the document
Document Type Active Internet-Draft (mmusic WG)
Last updated 2013-12-13
Stream IETF
Intended RFC status (None)
Formats pdf htmlized (tools) htmlized bibtex
Reviews
Stream WG state WG Document
Document shepherd Ari Keränen
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
Network Working Group                                      S. Nandakumar
Internet-Draft                                                     Cisco
Intended status: Standards Track                       December 11, 2013
Expires: June 14, 2014

            A Framework for SDP Attributes when Multiplexing
                draft-ietf-mmusic-sdp-mux-attributes-00

Abstract

   The Session Description Protocol (SDP) provides mechanisms to
   describe attributes of multimedia sessions and of individual media
   streams (e.g., Real-time Transport Protocol (RTP) sessions) within a
   multimedia session.  In the RTCWeb WG, there is a need to use a
   single 5-tuple for sending and receiving media associated with
   multiple media descriptions ("m=" lines).  Such a requirement has
   raised concerns over the semantic implications of the SDP attributes
   associated with the RTP Sessions multiplexed over a single transport
   layer flow.

   The scope of this specification is to provide a framework for
   analyzing the multiplexing characteristics of SDP attributes.  The
   specification also categorizes existing attributes based on the
   framework described herein.

Status of this Memo

   This Internet-Draft is submitted in full conformance with the
   provisions of BCP 78 and BCP 79.

   Internet-Drafts are working documents of the Internet Engineering
   Task Force (IETF).  Note that other groups may also distribute
   working documents as Internet-Drafts.  The list of current Internet-
   Drafts is at http://datatracker.ietf.org/drafts/current/.

   Internet-Drafts are draft documents valid for a maximum of six months
   and may be updated, replaced, or obsoleted by other documents at any
   time.  It is inappropriate to use Internet-Drafts as reference
   material or to cite them other than as "work in progress."

   This Internet-Draft will expire on June 14, 2014.

Copyright Notice

   Copyright (c) 2013 IETF Trust and the persons identified as the
   document authors.  All rights reserved.

Nandakumar                Expires June 14, 2014                 [Page 1]
Internet-Draft         SDP Attribute Multiplexing          December 2013

   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
   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.

Table of Contents

   1.  Introduction . . . . . . . . . . . . . . . . . . . . . . . . .  5
   2.  Terminology  . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.  Motivation . . . . . . . . . . . . . . . . . . . . . . . . . .  5
   4.  SDP Attribute Analysis Framework . . . . . . . . . . . . . . .  6
   5.  Analysis of Existing Attributes  . . . . . . . . . . . . . . .  9
     5.1.  RFC4566 - SDP: Session Description Protocol  . . . . . . . 10
     5.2.  RFC4585 - RTP/AVPF . . . . . . . . . . . . . . . . . . . . 11
     5.3.  RFC5761 - Multiplexing RTP and RTCP  . . . . . . . . . . . 11
     5.4.  RFC4574 - SDP Label Attribute  . . . . . . . . . . . . . . 11
     5.5.  RFC5432 - QoS Mechanism Selection in SDP . . . . . . . . . 12
     5.6.  RFC4568 - SDP Security Descriptions  . . . . . . . . . . . 12
     5.7.  RFC5762 - RTP over DCCP  . . . . . . . . . . . . . . . . . 13
     5.8.  RFC6773 - DCCP-UDP Encapsulation . . . . . . . . . . . . . 14
     5.9.  RFC5506 - Reduced-Size RTCP in RTP Profile . . . . . . . . 14
     5.10. RFC6787 - Media Resource Control Protocol Version 2  . . . 15
     5.11. RFC5245 - Interactive Connectivity Establishment (ICE) . . 15
     5.12. RFC5285 - RTP Header Extensions  . . . . . . . . . . . . . 16
     5.13. RFC3605 - RTCP attribute in SDP  . . . . . . . . . . . . . 17
     5.14. RFC5576 - Source-Specific SDP Attributes . . . . . . . . . 17
     5.15. RFC6236 - Image Attributes in SDP  . . . . . . . . . . . . 18
     5.16. RFC6285 - Rapid Acquisition of Multicast RTP Sessions  . . 18
     5.17. RFC6230 - Media Control Channel Framework  . . . . . . . . 19
     5.18. RFC6364 - SDP Elements for FEC Framework . . . . . . . . . 19
     5.19. RFC4796 - Content Attribute  . . . . . . . . . . . . . . . 20
     5.20. RFC3407 - SDP Simple Capability Declaration  . . . . . . . 20
     5.21. RFC6284 - Port Mapping between Unicast and Multicast
           RTP Sessions . . . . . . . . . . . . . . . . . . . . . . . 21
     5.22. RFC6714 - MSRP-CEMA  . . . . . . . . . . . . . . . . . . . 21
     5.23. RFC4583 - SDP Format for BFCP Streams  . . . . . . . . . . 21
     5.24. RFC5547 - SDP Offer/Answer for File Transfer . . . . . . . 22
     5.25. RFC6489 - SDP and RTP Media Loopback Extension . . . . . . 22
Show full document text