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Stream Control Transmission Protocol (SCTP)-Based Media Transport in the Session Description Protocol (SDP)
draft-ietf-mmusic-sctp-sdp-07

Document type: Active Internet-Draft (mmusic WG)
Document stream: IETF
Last updated: 2014-07-04
Intended RFC status: Unknown
Other versions: plain text, pdf, html

IETF State: WG Document Jan 2015
Document shepherd: Flemming Andreasen

IESG State: I-D Exists
Responsible AD: (None)
Send notices to: No addresses provided

MMUSIC                                                         S. Loreto
Internet-Draft                                              G. Camarillo
Intended status: Standards Track                                Ericsson
Expires: January 5, 2015                                    July 4, 2014

Stream Control Transmission Protocol (SCTP)-Based Media Transport in the
                   Session Description Protocol (SDP)
                     draft-ietf-mmusic-sctp-sdp-07

Abstract

   SCTP (Stream Control Transmission Protocol) is a transport protocol
   used to establish associations between two endpoints.  This document
   describes how to express media transport over SCTP in SDP (Session
   Description Protocol).  This document defines the 'SCTP', 'SCTP/DTLS'
   and 'DTLS/SCTP' protocol identifiers for SDP.

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
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   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 January 5, 2015.

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.  Code Components extracted from this document must
   include Simplified BSD License text as described in Section 4.e of

Loreto & Camarillo       Expires January 5, 2015                [Page 1]
Internet-Draft    The SCTP protocol identifier for SDP         July 2014

   the Trust Legal Provisions and are provided without warranty as
   described in the Simplified BSD License.

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .   2
   2.  Terminology . . . . . . . . . . . . . . . . . . . . . . . . .   3
   3.  Protocol Identifier . . . . . . . . . . . . . . . . . . . . .   3
   4.  Media Formats . . . . . . . . . . . . . . . . . . . . . . . .   4
     4.1.  Media Descriptions  . . . . . . . . . . . . . . . . . . .   5
       4.1.1.  sctp-port . . . . . . . . . . . . . . . . . . . . . .   6
       4.1.2.  max-message-size  . . . . . . . . . . . . . . . . . .   6
   5.  The Setup and Connection Attributes and Association
       Management  . . . . . . . . . . . . . . . . . . . . . . . . .   6
   6.  Multihoming . . . . . . . . . . . . . . . . . . . . . . . . .   7
   7.  Network Address Translation (NAT) Considerations  . . . . . .   8
   8.  Examples  . . . . . . . . . . . . . . . . . . . . . . . . . .   8
     8.1.  Actpass/Passive . . . . . . . . . . . . . . . . . . . . .   8
     8.2.  Existing Connection Reuse . . . . . . . . . . . . . . . .   9
     8.3.  SDP description for SCTP over DTLS Connection . . . . . .   9
     8.4.  SDP description for SCTP over DTLS Connection using
           default values  . . . . . . . . . . . . . . . . . . . . .  10
   9.  Security Considerations . . . . . . . . . . . . . . . . . . .  11
   10. IANA Considerations . . . . . . . . . . . . . . . . . . . . .  11
     10.1.  sctp-port attribute  . . . . . . . . . . . . . . . . . .  12
   11. Acknowledgments . . . . . . . . . . . . . . . . . . . . . . .  12
   12. References  . . . . . . . . . . . . . . . . . . . . . . . . .  12
     12.1.  Normative References . . . . . . . . . . . . . . . . . .  12
     12.2.  Informative References . . . . . . . . . . . . . . . . .  13
   Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . . .  13

1.  Introduction

   SDP (Session Description Protocol) [RFC4566] provides a general-
   purpose format for describing multimedia sessions in announcements or
   invitations.  TCP-Based Media Transport in the Session Description
   Protocol (SDP) [RFC4145] specifies a general mechanism for describing
   and establishing TCP (Transmission Control Protocol) streams.
   Connection-Oriented Media Transport over the Transport Layer Security
   (TLS) Protocol in the Session Description Protocol (SDP) [RFC4572]
   extends RFC4145 [RFC4145] for describing TCP-based media streams that

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