DiffServ is a prioritization scheme, Brian, how can you say it's not?
IntServ is a reservation scheme, and DiffServ attempts to provide
desired PHBs in practice by sorting packets into priority queues and
invoking appropriate Link Layer facilities, which are in most cases
priority-based, such as 802.11e traffic classes.
What on earth could the value of DSCPs be if they didn't map to traffic
classes in the data link?
RB
Brian E Carpenter <brian.e.carpenter@xxxxxxxxx> wrote:
> Russ,
> It has been consistently hard to explain that diffserv is not a
> prioritisation scheme, even within the technical community, let
> alone to the regulators and the media. I think your comments as
> quoted are as good as we can expect from journalists.
> It should be a matter of concern to all of us here that the US FCC
> isn't confused into regulating the technology. It would set a bad
> precedent for regulators in other countries. I am making no comment
> as to whether they should regulate carrier's charging practices; that's
> entirely a national matter that shouldn't concern the IETF in any way.
> Regards
> Brian Carpenter
> On 2010-09-03 05:47, Russ Housley wrote:
> > I want the whole community to be aware of the comments that I made to
>> the press yesterday. Clearly, these comments do not represent IETF
>> consensus in any way. They are my opinion, and the reporter was told to
>> express them as my opinion.
>>
>> One thing that I said was not captured quite right. The article says:
>> "With services that require certain speeds to operate smoothly, such as
>> Internet telephony, calls are given precedence over TV, Housley said."
>> I actually said that DiffServ can be used to make sure that traffic
>> associated with applications that require timely delivery, like voice
>> and video, to give preference over traffic associated with applications
>> without those demands, like email.
>>
>> The whole article is copied below, and it is online here:
>> http://www.nationaljournal.com/njonline/tc_20100902_7144.php
>>
>> Russ
--
Richard Bennett
Senior Research Fellow
Information Technology and Innovation Foundation
Washington, DC
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