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From: Fernando Gleiser <fgleiser@cactus.fi.uba.ar>
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cc: Max Laier <max@love2party.net>
Subject: Re: Ready or not?
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On Thu, 29 Jul 2004, Pawel Malachowski wrote:

> On Wed, Jul 28, 2004 at 03:02:38PM +0200, Max Laier wrote:
>
> Hello,
>
> > as PF+ALTQ gateway in production environment. For ALTQ there is the problem
> > of "will your driver be supported?".
>
> Could You please explain a bit, why ALTQ model is placed so close
> to network adapter driver (that they have to be modified) instead
> of placing it in upper layers (and leaving NIC drivers untouched)?

Short answer: ALTQ is short for "alternate queueing", it works by
changing the default (FIFO) queueing discipline of the NIC.

For the details and design criteria, look here:

ftp://ftp.csl.sony.co.jp/pub/kjc/papers/dissertation.ps.gz
http://www.csl.sony.co.jp/person/kjc/kjc/papers/usenix98/



			Fer