IETF 84
The IETF 84 meeting was held from July 29 - August 3, 2012
in Vancouver, BC, Canada
Presentations
RTP Congestion Control: Circuit Breakers for Unicast Sessions
2 August 2012
Multiple Media Types in an RTP Session
2 August 2012
Multiple RTP sessions over one Transport
2 August 2012
Guidelines for Using the Multiplexing Features of RTP
2 August 2012
WebRTC: Media Transport and Use of RTP
2 August 2012
Internet Drafts
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draft-westerlund-avtcore-transport-multiplexing
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Magnus Westerlund and Colin Perkins,
Multiple RTP Session on a Single Lower-Layer Transport
(.txt|.pdf),
Internet Engineering Task Force,
July 2012,
Work in progress
(draft-westerlund-avtcore-transport-multiplexing-03.txt).
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This version of the draft expands the motivation for the work and the
derived requirements and design considerations. The specification is
also updated to move the shim layer to the start of the packet,
immediately after the UDP header. This draft will be discussed in the
AVTCORE working group meeting at IETF 84 in Vancouver in July 2012.
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draft-westerlund-avtcore-multiplex-architecture
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draft-westerlund-avtcore-multi-media-rtp-session
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Magnus Westerlund, Colin Perkins, and Jonathan Lennox,
Multiple Media Types in an RTP Session
(.txt|.pdf),
Internet Engineering Task Force,
July 2012,
Work in progress
(draft-westerlund-avtcore-multi-media-rtp-session-00.txt).
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This draft describes how audio, video,
and text content can be multiplexed together into a single RTP session. This
multiplexing is prohibited by the
RTP specification and the
RTP Profile for Audio and Video Conferences with Minimal Control but
is desired by some in the WebRTC community. Our new draft discusses why it
might be desirable to allow this functionality, and outlines the changes to
the RTP specification needed to enable it. This is an early draft for
discussion at the IETF 84 meeting in Vancouver, and is not yet suitable for
implementation.
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draft-perkins-avtcore-rtp-circuit-breakers
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Colin Perkins and Varun Singh,
RTP Congestion Control: Circuit Breakers for Unicast Sessions
(.txt|.pdf),
Internet Engineering Task Force,
July 2012,
Work in progress
(draft-perkins-avtcore-rtp-circuit-breakers-01.txt).
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This is a minor update only, primarily to update the version of the TCP
throughput equation used, and to clarify a few points raised at the last
meeting. A more significant update can be expected later in the summer.
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draft-ietf-rtcweb-rtp-usage
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Colin Perkins, Magnus Westerlund, and Jörg Ott,
Web Real-Time Communication (WebRTC): Media Transport and Use of RTP
(.txt|.pdf),
Internet Engineering Task Force,
July 2012,
Work in progress
(draft-ietf-rtcweb-rtp-usage-04.txt).
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This version attempts to reflect the outcomes of the
IETF RTCWeb working group interim meeting that was held in Kista
on 12-13 June 2012. This is a major update to the draft, touching
almost every section of the text. The changes are too numerous to
describe in detail, but a
complete diff from the previous version is available. After the
extensive discussion in the interim meeting, we are not planning to
present this draft in the IETF 84 meeting in Vancouver; discussion
should take place on the
IETF RTCWeb working group's mailing list instead. If there are
still unresolved issues, we will discuss the draft further at IETF
85 in Atlanta in November 2012.
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Colin Perkins, Magnus Westerlund, and Jörg Ott,
Web Real-Time Communication (WebRTC): Media Transport and Use of RTP
(.txt|.pdf),
Internet Engineering Task Force,
June 2012,
Work in progress
(draft-ietf-rtcweb-rtp-usage-03.txt).
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This version of the draft is submitted for discussion at the IETF
RTCWeb working group's interim meeting in Kista on 12-13 June 2012.
This new version includes a greatly expanded discussion of RTP
topologies, some more concrete recommendations on use of the core RTP
protocol, and various other clarifications throughout. This is still
work in progress, and will likely evolve significantly after the
discussion at the interim meeting.
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draft-ietf-dccp-udpencap
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draft-ietf-avtext-rtp-duplication
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Ali Begen and Colin Perkins,
Duplicating RTP Streams
(.txt|.pdf),
Internet Engineering Task Force,
July 2012,
Work in progress
(draft-ietf-avtext-rtp-duplication-00.txt).
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draft-ietf-avtcore-rtp-security-options
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draft-ietf-avtcore-ecn-for-rtp
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Magnus Westerlund, Ingemar Johansson, Colin Perkins, Piers O'Hanlon, and Ken Carlberg,
Explicit Congestion Notification (ECN) for RTP over UDP
(.txt|.pdf),
Internet Engineering Task Force,
May 2012,
Work in progress
(draft-ietf-avtcore-ecn-for-rtp-08.txt).
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This version is a minor update, to address
IESG review comments. The most significant change is a fix to the qdtext
ABNF, to properly allow quoted values, but there are some minor clarifications
throughout.
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draft-ietf-avt-srtp-not-mandatory
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Colin Perkins and Magnus Westerlund,
Why RTP Does Not Mandate a Single Security Mechanism
(.txt|.pdf),
Internet Engineering Task Force,
July 2012,
Work in progress
(draft-ietf-avt-srtp-not-mandatory-09.txt).
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Following working group discussion at the Taipei meeting, discussion
of the options for securing RTP has been split out into
a separate draft. The scope of this draft has been narrowed, and
focussed on providing guidelines for designers and reviewers of future
RTP extensions, to ensure that appropriate security mechanisms are
mandated, and that any such mechanisms are specified in a manner that
conforms with the RTP architecture.