From owner-freebsd-atm  Wed Mar 17  5:19:10 1999
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From: livensw@rc.bel.alcatel.be (Wim Livens)
Message-Id: <199903171319.OAA28626@btm4fw.rc.bel.alcatel.be>
To: kjc@csl.sony.co.jp
Subject: Re: ATLQ support for HARP ?
Cc: freebsd-atm@FreeBSD.ORG
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> >> I want to use the HARP ATM driver with ALTQ.  
> >> This driver isn't listed in the 'supported drivers' list for ALTQ.  
> >> I'm just using UBR PVCs, one for each vif.
> >> So, what must be done to make this (part of the) driver work with ALTQ ?
> >> How much work ?
> 
> Currently, ALTQ doesn't work with HARP.
> 
> I haven't had time to figure out how the different settings of HARP
> interacts with queueing at the interface level.
> 
> ALTQ over ATM isn't simple since the ATM drivers have their own
> interface abstraction and queueing...

If I only have one PVC per logical interface and using ALTQ to limit the bandwidth 
to each logical interface such that the sum is =< than lets say 130 Mbps, I suppose 
there will be no congestion in the atm driver. Do you think this can work ?

We're building a research testbed to play with ALTQ etc. I'm just using ATM as a 
wire to have these logical interfaces to avoid the hassle of multiple ethernet 
cards and cables.

Thanks for the help so far,

Wim Livens.

Alcatel - Corporate Research Center     wim.livens@alcatel.be
Fr. Wellesplein 1                       livensw@rc.bel.alcatel.be
B-2018 Antwerpen                Tel:    +32 3 240 7570
Belgium.                        Fax:    +32 3 240 9932



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