A Framework for SDP Attributes when Multiplexing
draft-ietf-mmusic-sdp-mux-attributes-16

Document Type Active Internet-Draft (mmusic WG)
Last updated 2017-01-03 (latest revision 2016-12-19)
Replaces draft-nandakumar-mmusic-sdp-mux-attributes
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Network Working Group                                      S. Nandakumar
Internet-Draft                                                     Cisco
Intended status: Standards Track                       December 19, 2016
Expires: June 22, 2017

            A Framework for SDP Attributes when Multiplexing
                draft-ietf-mmusic-sdp-mux-attributes-16

Abstract

   The purpose of this specification is to provide a framework for
   analyzing the multiplexing characteristics of Session Description
   Protocol (SDP) attributes when SDP is used to negotiate the usage of
   single 5-tuple for sending and receiving media associated with
   multiple media descriptions.

   This specification also categorizes the existing SDP 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.

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   This Internet-Draft will expire on June 22, 2017.

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
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Nandakumar                Expires June 22, 2017                 [Page 1]
Internet-Draft         SDP Attribute Multiplexing          December 2016

   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  . . . . . . . . . . . . . . . . . . . . . . . . .   6
   4.  SDP Attribute Analysis Framework  . . . . . . . . . . . . . .   6
     4.1.  Category: NORMAL  . . . . . . . . . . . . . . . . . . . .   7
     4.2.  Category: CAUTION . . . . . . . . . . . . . . . . . . . .   7
     4.3.  Category: IDENTICAL . . . . . . . . . . . . . . . . . . .   8
     4.4.  Category: SUM . . . . . . . . . . . . . . . . . . . . . .   8
     4.5.  Category: TRANSPORT . . . . . . . . . . . . . . . . . . .   9
     4.6.  Category: INHERIT . . . . . . . . . . . . . . . . . . . .  10
     4.7.  Category: IDENTICAL-PER-PT  . . . . . . . . . . . . . . .  10
     4.8.  Category: SPECIAL . . . . . . . . . . . . . . . . . . . .  11
     4.9.  Category: TBD . . . . . . . . . . . . . . . . . . . . . .  11
   5.  Analysis of Existing Attributes . . . . . . . . . . . . . . .  12
     5.1.  RFC4566: SDP  . . . . . . . . . . . . . . . . . . . . . .  12
     5.2.  RFC4585: RTP/AVPF . . . . . . . . . . . . . . . . . . . .  14
     5.3.  RFC5761: Multiplexing RTP and RTCP  . . . . . . . . . . .  14
     5.4.  RFC3312: Integration of Resource Management and SIP . . .  14
     5.5.  RFC4574: SDP Label Attribute  . . . . . . . . . . . . . .  15
     5.6.  RFC5432: QOS Mechanism Selection in SDP . . . . . . . . .  15
     5.7.  RFC4568: SDP Security Descriptions  . . . . . . . . . . .  16
     5.8.  RFC5762: RTP over DCCP  . . . . . . . . . . . . . . . . .  16
     5.9.  RFC6773: DCCP-UDP Encapsulation . . . . . . . . . . . . .  17
     5.10. RFC5506: Reduced-Size RTCP in RTP Profile . . . . . . . .  18
     5.11. RFC6787: Media Resource Control Protocol Version 2  . . .  18
     5.12. RFC5245: ICE  . . . . . . . . . . . . . . . . . . . . . .  19
     5.13. RFC5285: RTP Header Extensions  . . . . . . . . . . . . .  20
     5.14. RFC3605: RTCP attribute in SDP  . . . . . . . . . . . . .  21
     5.15. RFC5576: Source-Specific SDP Attributes . . . . . . . . .  21
     5.16. RFC7273: RTP Clock Source Signalling  . . . . . . . . . .  22
     5.17. RFC6236: Image Attributes in SDP  . . . . . . . . . . . .  23
     5.18. RFC7197: Duplication Delay Attribute in SDP . . . . . . .  24
     5.19. RFC7266: RTCP XR Blocks for MOS Metric Reporting  . . . .  24
     5.20. RFC6285: Rapid Acquisition of Multicast RTP Sessions  . .  24
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