Re: [AVTCORE] I-D Action: draft-ietf-avtcore-6222bis-05.txt

Magnus Westerlund <magnus.westerlund@ericsson.com> Tue, 09 July 2013 08:09 UTC

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Date: Tue, 9 Jul 2013 10:10:32 +0200
From: Magnus Westerlund <magnus.westerlund@ericsson.com>
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Subject: Re: [AVTCORE] I-D Action: draft-ietf-avtcore-6222bis-05.txt
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WG,

This document has just been in IESG review and the authors has discussed
with the IESG. One discuss raised was the implications of the MAC based
generation of short-term persistent CNAMES. The conclusion in that
discussion was to remove that option and rely only on random names in
that case.

I wanted to inform the WG about this significant change and give you a
chance to react to this change before the document is approved. You will
have one week to react.

The details can be seen in this diff:
http://www.ietf.org/rfcdiff?url2=draft-ietf-avtcore-6222bis-05


Cheers

Magnus Westerlund


On 2013-07-08 23:29, internet-drafts@ietf.org wrote:
> 
> A New Internet-Draft is available from the on-line Internet-Drafts directories.
>  This draft is a work item of the Audio/Video Transport Core Maintenance Working Group of the IETF.
> 
> 	Title           : Guidelines for Choosing RTP Control Protocol (RTCP) Canonical Names (CNAMEs)
> 	Author(s)       : Ali Begen
>                           Colin Perkins
>                           Dan Wing
>                           Eric Rescorla
> 	Filename        : draft-ietf-avtcore-6222bis-05.txt
> 	Pages           : 10
> 	Date            : 2013-07-08
> 
> Abstract:
>    The RTP Control Protocol (RTCP) Canonical Name (CNAME) is a
>    persistent transport-level identifier for an RTP endpoint.  While the
>    Synchronization Source (SSRC) identifier of an RTP endpoint may
>    change if a collision is detected or when the RTP application is
>    restarted, its RTCP CNAME is meant to stay unchanged, so that RTP
>    endpoints can be uniquely identified and associated with their RTP
>    media streams.
> 
>    For proper functionality, RTCP CNAMEs should be unique within the
>    participants of an RTP session.  However, the existing guidelines for
>    choosing the RTCP CNAME provided in the RTP standard are insufficient
>    to achieve this uniqueness.  RFC 6222 was published to update those
>    guidelines to allow endpoints to choose unique RTCP CNAMEs.
>    Unfortunately, later investigations showed that some parts of the new
>    algorithms were unnecessarily complicated and/or ineffective.  This
>    document addresses these concerns and replaces RFC 6222.
> 
> 
> The IETF datatracker status page for this draft is:
> https://datatracker.ietf.org/doc/draft-ietf-avtcore-6222bis
> 
> There's also a htmlized version available at:
> http://tools.ietf.org/html/draft-ietf-avtcore-6222bis-05
> 
> A diff from the previous version is available at:
> http://www.ietf.org/rfcdiff?url2=draft-ietf-avtcore-6222bis-05
> 
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
> _______________________________________________
> Audio/Video Transport Core Maintenance
> avt@ietf.org
> https://www.ietf.org/mailman/listinfo/avt
> 
> 


-- 

Magnus Westerlund

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