Re: [aqm] AQM support in the network

Mikael Abrahamsson <swmike@swm.pp.se> Tue, 19 March 2013 09:41 UTC

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Date: Tue, 19 Mar 2013 10:40:59 +0100
From: Mikael Abrahamsson <swmike@swm.pp.se>
To: Mirja Kühlewind <mirja.kuehlewind@ikr.uni-stuttgart.de>
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Cc: aqm@ietf.org, Brian Trammell <trammell@tik.ee.ethz.ch>
Subject: Re: [aqm] AQM support in the network
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On Tue, 19 Mar 2013, Mirja Kühlewind wrote:

> Not sure who is subscribed to this list, but as a starting point I would 
> like to ask anybody who reads this and is in charge of operating any 
> kind of network (isp, cdn provider, or smaller local networks) to post 
> to the list, if AQM is used anywhere in the network!

I would imagine that most ISPs use AQM on their core links, but this AQM 
is more WRED kind of AQM, where you have a few queues and place the 
traffic into each queue based on DSCP/EXP values. This is mostly used to 
assure certain amount of bandwidth/loss profile to certain services, such 
as the providers own VoIP or IPTV service.

> Of course it would also be helpful to tell where AQM is used and which 
> kind of AQM also which parameters. I know that people might not be 
> allowed to say, but maybe you could at least indicate if it is used 
> somewhere or not. Please also tell if you don't use AQM anywhere. Maybe 
> you might also be able to explain the reasons why AQM is not used...?

Are you defining AQM as anything that is not FIFO?

-- 
Mikael Abrahamsson    email: swmike@swm.pp.se