Re: [dispatch] I-D Action:draft-wing-dispatch-v6-migration-00.txt

"Elwell, John" <john.elwell@siemens-enterprise.com> Wed, 01 September 2010 16:00 UTC

From: "Elwell, John" <john.elwell@siemens-enterprise.com>
To: IETF DISPATCH list <dispatch@ietf.org>
Date: Wed, 01 Sep 2010 18:01:10 +0200
Thread-Topic: I-D Action:draft-wing-dispatch-v6-migration-00.txt
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Subject: Re: [dispatch] I-D Action:draft-wing-dispatch-v6-migration-00.txt
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Thanks to the authors for writing this draft, which was triggered by the Bar BoF in Maastricht, which was in turn triggered by drafts discussed in MMUSIC such as ICE-microlite (of which I am a co-author) and ALTC.

Whilst doubting the need for connectivity checks (whether they be STUN-based, RTP-based, RTCP-based or whatever) in certain closed networks, in my opinion, where connectivity checks are needed, the existing STUN-based connectivity checks will suffice. To introduce a second method (whether RTP-based, RTCP-based or STUN-based-without-SHA1) will not help interoperability, and will likely introduce as many problems as it solves.

John


> -----Original Message-----
> From: i-d-announce-bounces@ietf.org 
> [mailto:i-d-announce-bounces@ietf.org] On Behalf Of 
> Internet-Drafts@ietf.org
> Sent: 27 August 2010 21:15
> To: i-d-announce@ietf.org
> Subject: I-D Action:draft-wing-dispatch-v6-migration-00.txt 
> 
> A New Internet-Draft is available from the on-line 
> Internet-Drafts directories.
> 
> 	Title           : Migrating SIP to IPv6 Media Without 
> Connectivity Checks
> 	Author(s)       : D. Wing, A. Yourtchenko
> 	Filename        : draft-wing-dispatch-v6-migration-00.txt
> 	Pages           : 8
> 	Date            : 2010-08-27
> 
> During the migration from IPv4 to IPv6, it is anticipated that an
> IPv6 path might be broken for a variety of reasons, causing endpoints
> to not receive RTP data.  Connectivity checks would detect and avoid
> the user noticing such a problem, but there is industry reluctance to
> implement connectivity checks.
> 
> This document describes a mechanism allowing dual-stack SIP endpoints
> to attempt communications over IPv6 and fall back to IPv4 if the IPv6
> path is not working.  The mechanism does not require connectivity
> checks.
> 
> A URL for this Internet-Draft is:
> http://www.ietf.org/internet-drafts/draft-wing-dispatch-v6-mig
ration-00.txt
> 
> Internet-Drafts are also available by anonymous FTP at:
> ftp://ftp.ietf.org/internet-drafts/
> 
> Below is the data which will enable a MIME compliant mail reader
> implementation to automatically retrieve the ASCII version of the
> Internet-Draft.
>

Re: [dispatch] I-D Action:draft-wing-dispatch-v6-… Elwell, John
Re: [dispatch] I-D Action:draft-wing-dispatch-v6-… Christer Holmberg