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Re: [homenet] DSCP

Brian E Carpenter <brian.e.carpenter@gmail.com> Fri, 07 February 2014 19:48 UTC

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Date: Sat, 08 Feb 2014 08:48:52 +1300
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Organization: University of Auckland
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To: Mikael Abrahamsson <swmike@swm.pp.se>
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Cc: "homenet@ietf.org" <homenet@ietf.org>, Lorenzo Colitti <lorenzo@google.com>
Subject: Re: [homenet] DSCP
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On 08/02/2014 00:20, Mikael Abrahamsson wrote:
> On Fri, 7 Feb 2014, Lorenzo Colitti wrote:
> 
>>> Absolutely, but it means resetting DSCP, thus breaking QoS in other
>>> parts
>>> of the packet path.
>>
>> Well to be more precise, it means making sure DSCP is a value that the
>> customer is allowed to use (or rewriting it). Just like you have to make
>> sure that the packet's source address is a value that the customer is
>> allowed to use (or dropping the packet). No?
> 
> Correct.

Yes. There's nothing we've discussed in this thread that is different
from the diffserv architecture (RFC 2475). Diffserv works within
a single administrative domain (possibly split up using tunnels).
There are some efforts towards inter-provider diffserv in TSVWG
(RFC 4594, RFC 5127, draft-geib-tsvwg-diffserv-intercon).

   Brian

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