Re: [MMUSIC] I-D ACTION:draft-ietf-mmusic-sdp-misc-cap-00.txt

["Elwell, John" <[e-mail]>]

The reason I query this is because of the c-line negotiation mechanism, which introduces a new way of negotiation between IPv4 and IPv6, in contradiction to the outcome of IETF#68, when there was consensus to use ICE as the basis, rather than ANAT or SDP capability negotiation (and leading to the deprecation of ANAT in the approved ICE draft). Although I was not present in Stockholm, it is clear from the minutes that this issue was opened up again, but with no consensus. Therefore, after 8 months silence on the subject, it was a complete surprise to me to see a WG draft with a cap-neg-based mechanism for IPv4/IPv6 negotiation.

So I would indeed appreciate a comment from the chairs on this.

John 

> -----Original Message-----
> From: [e-mail] 
> [mailto:[e-mail]] 
> Sent: 17 March 2010 12:23
> To: Elwell, John; [e-mail]; [e-mail]
> Subject: RE: [MMUSIC] I-D ACTION:draft-ietf-mmusic-sdp-misc-cap-00.txt
> 
> 
> 
> >-----Original Message-----
> >From: ext Elwell, John [mailto:[e-mail]]
> >Sent: 17 March, 2010 14:17
> >To: Veikkolainen Simo (Nokia-D/Helsinki); [e-mail]
> >Subject: RE: [MMUSIC] I-D 
> ACTION:draft-ietf-mmusic-sdp-misc-cap-00.txt
> >
> >Simo,
> >
> >Thanks. However, there is no mention in the minutes about making it a
> >work item. Furthermore, looking at the minutes for draft-boucadair-
> >mmusic-ccap it clearly states there was no consensus. In 
> particular the
> >minutes state some unanswered questions, including comparison of the
> >ccap solution with re-using ICE. So I am interested in how 
> we got from
> >this very inconclusive situation to adoption of the present 
> work item. I
> >have been unable to find anything in the post-Stockholm mailing list
> >archives or the Hiroshima minutes.
> 
> It indeed seems that the Stockholm minutes do not say 
> anything about the adoption as WG item. However, I 
> double-checked right after the meeting with the chairs 
> whether my understanding about adoption was correct, and got 
> a confirmation. Maybe Jean-Francois could comment on this.
> 
> Simo
> 
> >John
> >
> >> -----Original Message-----
> >> From: [e-mail]
> >> [mailto:[e-mail]]
> >> Sent: 17 March 2010 11:59
> >> To: Elwell, John; [e-mail]
> >> Subject: RE: [MMUSIC] I-D 
> ACTION:draft-ietf-mmusic-sdp-misc-cap-00.txt
> >>
> >>
> >>
> >> >-----Original Message-----
> >> >From: [e-mail]
> >> [mailto:[e-mail]] On Behalf
> >> >Of ext Elwell, John
> >> >Sent: 17 March, 2010 10:40
> >> >To: [e-mail]
> >> >Subject: Re: [MMUSIC] I-D
> >> ACTION:draft-ietf-mmusic-sdp-misc-cap-00.txt
> >> >
> >> >Can somebody please point me at the email thread that led to
> >> adoption of
> >> >this as a work item?
> >>
> >> Hello,
> >> This was discussed and adopted as WG item already in
> >> Stockholm meeting. We had a long discussion with the authors
> >> of draft-boucadair-mmusic-ccap to align our work which is why
> >> the submission as WG item comes so late.
> >>
> >> Regards,
> >> Simo
> >>
> >> >Thanks,
> >> >
> >> >John
> >> >
> >> >> -----Original Message-----
> >> >> From: [e-mail]
> >> >> [mailto:[e-mail]] On Behalf Of
> >> [e-mail]
> >> >> Sent: 16 March 2010 22:15
> >> >> To: [e-mail]
> >> >> Cc: [e-mail]
> >> >> Subject: [MMUSIC] I-D 
> ACTION:draft-ietf-mmusic-sdp-misc-cap-00.txt
> >> >>
> >> >> A New Internet-Draft is available from the on-line 
> Internet-Drafts
> >> >> directories.
> >> >> This draft is a work item of the Multiparty Multimedia
> >> >> Session Control Working Group of the IETF.
> >> >>
> >> >> 	Title		: Miscellaneous Capabilities
> >> >> Negotiation in the Session Description Protocol (SDP)
> >> >> 	Author(s)	: M. Garcia-Martin, S. 
> Veikkolainen, R. Gilman
> >> >> 	Filename	: draft-ietf-mmusic-sdp-misc-cap-00.txt
> >> >> 	Pages		: 17
> >> >> 	Date		: 2010-3-1
> >> >>
> >> >>    SDP has been extended with a capability negotiation mechanism
> >> >>    framework that allows the endpoints to negotiate transport
> >> >> protocols
> >> >>    and attributes.  This framework has been extended 
> with a Media
> >> >>    capabilities negotiation mechanism that allows endpoints
> >> >> to negotiate
> >> >>    additional media-related capabilities.  This negotiation
> >> >> is embedded
> >> >>    into the widely-used SDP offer/answer procedures.
> >> >>
> >> >>    This memo extends the SDP capability negotiation
> >> framework to allow
> >> >>    endpoints to negotiate a number of miscellaneous SDP
> >> capabilities.
> >> >>    In particular, this memo provides a mechanism to 
> negotiate media
> >> >>    titles ("i=" line for each media), connection data
> >> ("c=" line), and
> >> >>    media bandwidth ("b=" line).
> >> >>
> >> >>
> >> >> A URL for this Internet-Draft is:
> >> >> http://www.ietf.org/internet-drafts/draft-ietf-mmusic-sdp-misc
> >> >> -cap-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.
> >> >>
> >> >_______________________________________________
> >> >mmusic mailing list
> >> >[e-mail]
> >> >https://www.ietf.org/mailman/listinfo/mmusic
> >>
>