Re: [tsvwg] draft-dhesikan-tsvwg-rtcweb-qos

Wesley Eddy <wes@mti-systems.com> Wed, 10 July 2013 02:56 UTC

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Date: Tue, 09 Jul 2013 22:56:36 -0400
From: Wesley Eddy <wes@mti-systems.com>
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Cc: DAN DRUTA <dd5826@att.com>, tsvwg@ietf.org
Subject: Re: [tsvwg] draft-dhesikan-tsvwg-rtcweb-qos
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On 7/8/2013 7:35 PM, Cullen Jennings wrote:
> 
> The draft-dhesikan-tsvwg-rtcweb-qos draft was discussed extensively when it was an individual draft then WG draft in another WG and I don't think there is much more to say about it. This is one of the normative dependencies of the webrtc work and that stuff is already getting implemented in browsers so I want to move this along in an expedient fashion. 


Without checking ... it makes no sense to me that there would be
a normative dependency on this since it does not impact the
interoperability or correctness of an implementation.

It's purely a performance enhancement, if/when it actually causes
the intended things to happen in the network.

That said, I think the interesting facet of this document is that
packets within the same flow (defined by 5-tuple of address-port
pairs and protocol number) are receiving different codepoints, and
the implications of that for a CC that may be on top of them need
to be delved into.  There isn't really text or recommendations
going into that, which seems to be the important part, as if you
can figure that out, these mappings are the more obvious part.

So, I think it might make sense to do this, but the current
document isn't addressing the implications or how this works in
a bigger system sense, and I don't think the particular marking
tables are the hard or important part.


-- 
Wes Eddy
MTI Systems