Negotiating Media Multiplexing Using the Session Description Protocol (SDP)
draft-ietf-mmusic-sdp-bundle-negotiation-31

Document Type Active Internet-Draft (mmusic WG)
Last updated 2016-06-19
Replaces draft-holmberg-mmusic-sdp-bundle-negotiation
Stream IETF
Intended RFC status Proposed Standard
Formats plain text xml pdf html bibtex
Stream WG state WG Consensus: Waiting for Write-Up Jul 2016
Revised I-D Needed - Issue raised by WG
Document shepherd Flemming Andreasen
IESG IESG state I-D Exists
Consensus Boilerplate Unknown
Telechat date
Responsible AD (None)
Send notices to (None)
MMUSIC Working Group                                         C. Holmberg
Internet-Draft                                                  Ericsson
Updates: 3264 (if approved)                                H. Alvestrand
Intended status: Standards Track                                  Google
Expires: December 21, 2016                                   C. Jennings
                                                                   Cisco
                                                           June 19, 2016

 Negotiating Media Multiplexing Using the Session Description Protocol
                                 (SDP)
            draft-ietf-mmusic-sdp-bundle-negotiation-31.txt

Abstract

   This specification defines a new Session Description Protocol (SDP)
   Grouping Framework extension, 'BUNDLE'.  The extension can be used
   with the SDP Offer/Answer mechanism to negotiate the usage of a
   single address:port combination (BUNDLE address) for receiving media,
   referred to as bundled media, specified by multiple SDP media
   descriptions ("m=" lines).

   To assist endpoints in negotiating the use of bundle this
   specification defines a new SDP attribute, 'bundle-only', which can
   be used to request that specific media is only used if bundled.  The
   specification also updates RFC 3264, to allow usage of zero port
   values without meaning that media is rejcted.

   There are multiple ways to correlate the bundled RTP packets with the
   appropriate media descriptions.  This specification defines a new
   Real-time Transport Protocol (RTP) source description (SDES) item and
   a new RTP header extension that provides an additional way to do this
   correlation by using them to carry a value that associates the RTP/
   RTCP packets with a specific media description.

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

Holmberg, et al.        Expires December 21, 2016               [Page 1]
Internet-Draft                Bundled media                    June 2016

   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 December 21, 2016.

Copyright Notice

   Copyright (c) 2016 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
   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  . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   6
   3.  Conventions . . . . . . . . . . . . . . . . . . . . . . . . .   7
   4.  Applicability Statement . . . . . . . . . . . . . . . . . . .   7
   5.  SDP Grouping Framework BUNDLE Extension . . . . . . . . . . .   7
   6.  SDP 'bundle-only' Attribute . . . . . . . . . . . . . . . . .   8
   7.  SDP Information Considerations  . . . . . . . . . . . . . . .   9
     7.1.  General . . . . . . . . . . . . . . . . . . . . . . . . .   9
     7.2.  Connection Data (c=)  . . . . . . . . . . . . . . . . . .   9
     7.3.  Bandwidth (b=)  . . . . . . . . . . . . . . . . . . . . .   9
Show full document text