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The Session Description Protocol (SDP) 'trafficclass' Attribute
draft-ietf-mmusic-traffic-class-for-sdp-05

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 Mar 2014
Document shepherd: Ari Keranen

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

Network WG                                                   James Polk
Internet-Draft                                           Subha Dhesikan
Expires: January 3, 2015                                     Paul Jones
Intended Status: Standards Track (PS)                     Cisco Systems
                                                           July 3, 2014

    The Session Description Protocol (SDP) 'trafficclass' Attribute
               draft-ietf-mmusic-traffic-class-for-sdp-05

Abstract

   This document proposes a new Session Description Protocol (SDP) 
   attribute to identify the traffic class a session is requesting
   in its offer/answer exchange.  

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
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   reference material or to cite them other than as "work in progress."

   This Internet-Draft will expire on July 4, 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
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   (http://trustee.ietf.org/license-info) in effect on the date of
   publication of this document.  Please review these documents
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   warranty as described in the Simplified BSD License.

Polk, et al.              Expires Jan 4, 2015                  [Page 1]
Internet-Draft         SDP trafficclass Attribute             July 2014

Table of Contents

   1.  Introduction  . . . . . . . . . . . . . . . . . . . . . . . .  2
   2.  Traffic Class Framework and Component Definitions . . . . . .  5
   3.  Traffic Class Attribute Definition  . . . . . . . . . . . . .  6
       3.1 Categories within the SDP Traffic Class Label . . . . . .  8
       3.2 Applications within the SDP Traffic Class Label . . . . .  9
       3.3 Adjectives within the SDP Traffic Class Label . . . . . .  9
       3.3.1 Qualified Adjectives  . . . . . . . . . . . . . . . . .  9
   4.  Matching Categories with Applications and Adjectives  . . . . 11
       4.1 Conversational Category Traffic Class . . . . . . . . . . 11
       4.2 Multimedia-Conferencing Category Traffic Class  . . . . . 12
       4.3 Realtime-Interactive Category Traffic Class . . . . . . . 14
       4.4 Multimedia-Streaming Category Traffic Class . . . . . . . 15
       4.5 Broadcast Category Traffic Class  . . . . . . . . . . . . 17
       4.6 Intermittent Category Traffic Class . . . . . . . . . . . 18
   5.  Offer/Answer Behavior . . . . . . . . . . . . . . . . . . . . 19
       5.1 Offer Behavior  . . . . . . . . . . . . . . . . . . . . . 20
       5.2 Answer Behavior . . . . . . . . . . . . . . . . . . . . . 20
   6.  Security considerations . . . . . . . . . . . . . . . . . . . 21
   7.  IANA considerations . . . . . . . . . . . . . . . . . . . . . 21
   8.  Acknowledgments   . . . . . . . . . . . . . . . . . . . . . . 25
   9.  References  . . . . . . . . . . . . . . . . . . . . . . . . . 25
       9.1.  Normative References  . . . . . . . . . . . . . . . . . 25
       9.2.  Informative References  . . . . . . . . . . . . . . . . 26
       Authors' Addresses  . . . . . . . . . . . . . . . . . . . . . 26
       Appendix  . . . . . . . . . . . . . . . . . . . . . . . . . . 27

1.  Introduction

   The Session Description Protocol (SDP) [RFC4566] provides a means 
   for an offerer to describe the specifics of a session to an 
   answerer, and for the answerer to respond back with its session 
   specifics to the offerer.  These session specifics include offering 
   the codec or codecs to choose from, the specific IP address and port
   number the offerer wants to receive the RTP stream(s) on/at, the 
   particulars about the codecs the offerer wants considered or 
   mandated, and so on.  

   There are many facets within SDP to determine the Real-time 
   Transport Protocol (RTP) [RFC3550] details for the session 
   establishment between one or more endpoints, but identifying how the
   underlying network should process each stream still remains 
   under-specified. 

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