[Fwd: Re: [LARTC] QoS for real-time data on ADSL]

[Fwd: Re: [LARTC] QoS for real-time data on ADSL]

[Tarek W.]

-----Forwarded Message-----

> From: Tarek W. <tarek@cyberia.net.lb>
> To: LARTC@mailman.ds9a.nl
> Subject: Re: [LARTC] QoS for real-time data on ADSL
> Date: 26 Nov 2002 09:12:15 -0200
> 
> 
> This is purely theoretical... VOIP afaik consumes a decent amount of
> bandwidth... I gather you will not be doing any nat. My advice to u is
> to drop sqf as it is fu when it comes to bandwidth... I'd set up a root
> qdisc pfifo (1:), default flowid 22 (or 1:22), with a child (1:1) class
> again a regular pfifo only. now cap that at around 90% of the "stated"
> available speed maybe even less since its adsl... now create two
> children of that class, the first (1:21) with prio 1, the second
> (1:22)with prio 2 (i am not talking about the prio qdisc here, if ur
> lost, consult the lartc howto), rate and ceil r irrelevant. create two
> children under (1:21), 1:31 with prio 1 and 1:32 with prio2. enqueue sfq
> under the 1:31 and TBF under 1:32. now attach filters to the root qdisc
> which dump VOIP traffic in 1:21, then attach filters to 1:21 which dump
> ACK packets in 1:31 and others with lower priority to dump everything
> else (effectively all other VOIP traffic) in 1:32. i think that's a
> fullproof solution...
> 
> On Mon, 2002-11-25 at 06:38, Thomas Jalsovsky wrote:
> > 
> > Hello,
> > 
> > 	I have an ADSL connection to ISP. Our config at the moment is 64k
> > upstream and 384 downstream. I would like to set up the upstream QoS
> > polixy/shaping for allowing real-time protocols, in my case VoIP (RTP).
> 



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