Colin Perkins

draft-westerlund-avtcore-multiplex-architecture

IETF DataTracker: draft-westerlund-avtcore-multiplex-architecture

This draft was replaced by draft-ietf-avtcore-multiplex-guidelines

• Magnus Westerlund, Bo Burman, Colin Perkins, and Harald Alvestrand, Guidelines for using the Multiplexing Features of RTP (.txt|.pdf), Internet Engineering Task Force, February 2013, Work in progress (draft-westerlund-avtcore-multiplex-architecture-03.txt).

• This is a relatively minor update, mostly removing text on new RTP topologies, which is now in the RFC5117bis draft.

• (diff from previous version)
• Magnus Westerlund, Bo Burman, Colin Perkins, and Harald Alvestrand, Guidelines for using the Multiplexing Features of RTP (.txt|.pdf), Internet Engineering Task Force, July 2012, Work in progress (draft-westerlund-avtcore-multiplex-architecture-02.txt).

• This version is a significant rewrite, with changes throughout, trying to clarify the guidelines.

• (diff from previous version)
• Magnus Westerlund, Bo Burman, and Colin Perkins, RTP Multiplexing Architecture (.txt|.pdf), Internet Engineering Task Force, March 2012, Work in progress (draft-westerlund-avtcore-multiplex-architecture-01.txt).

• This version of the draft has been extensively re-written to try to clarify the issues and arguments.

• (diff from previous version)
• Magnus Westerlund, Bo Burman, and Colin Perkins, RTP Multiplexing Architecture (.txt|.pdf), Internet Engineering Task Force, October 2011, Work in progress (draft-westerlund-avtcore-multiplex-architecture-00.txt).

• Initial version.

RTP has always been a protocol that supports multiple participants each sending their own media streams in an RTP session. To do this, it relies on three main multiplexing points: RTP session, SSRC, and Payload Type. However, most uses of RTP to date have been simpler, often with only a single SSRC in each direction, and a single RTP session per media type. More recently, however, the more complex use cases have started to be more common, and hence more guidance on how to use RTP in these cases is needed. This new draft analyses a number of cases and discusses the usage of the various multiplexing points and the need for functionality when defining RTP/RTCP extensions that use multiple RTP streams and multiple RTP sessions. This developed from the WebRTC discussion of session multiplexing, but is heading in a more generally applicable direction, and may impact the IETF CLUE working group, as well as general RTP sessions involving multiple participants and complex topologies.