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Date:      Mon, 15 Apr 2002 12:03:40 +0300
From:      "Mihail Balikov" <misho@interbgc.com>
To:        "Luigi Rizzo" <rizzo@icir.org>
Cc:        <freebsd-ipfw@FreeBSD.ORG>
Subject:   Re: dummynet and ip.fw.one_pass
Message-ID:  <000901c1e45c$6f89a3a0$eee209d9@interbgc.com>
References:  <003401c1e419$70e73340$eee209d9@interbgc.com> <20020414221105.B21946@iguana.icir.org>

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in configuration:

ipfw pipe 1 config bw 1Mbit/s
ipfw queue 2 config pipe 1 weight 1 mask dst-ip 0x000000ff
ipfw add queue 2 ip from any to 1.2.3.0/24
ipfw pipe 3 config bw 64Kbit/s burst 128Kbit/s mask dst-ip 0x000000ff
ipfw add 3 pipe 3 ip from any to 1.2.3.0/24

is it correct following logic:

if (  (packet & M_DUMMYNET) &&               /* packet has passed through
pipe ==> pipe 2 */
    ! (packet & M_DUMMYNET_DELAIED))  /* packet has not been delaied by pipe
2 */
{
            allow_burst_upto(128Kbit/s);
} else {
            exact_shape(64Kbit/s);
}

regards,
Mihail



----- Original Message -----
From: "Luigi Rizzo" <rizzo@icir.org>
To: "Mihail Balikov" <misho@interbgc.com>
Cc: <freebsd-ipfw@FreeBSD.ORG>
Sent: Monday, April 15, 2002 8:11 AM
Subject: Re: dummynet and ip.fw.one_pass


> the code seems correct, but I would do the shaping in the opposite
> order so that a single host won't be able to monopolise the 1Mbit
> that you allow for the network.
>
> Secondly, this seems to be a good use for fair queueing, where
> you want equal sharing of the 1Mbit/s bandwidth:
>
> ipfw pipe 1 config bw 1Mbit/s
> ipfw queue 2 config pipe 1 weight 1 mask dst-ip 0x000000ff
>
> ipfw add queue 2 ip from any to 1.2.3.0/24
>
> (you do not need fw_one_pass=0 in this case)
>
> cheers
> luigi
>
> On Mon, Apr 15, 2002 at 04:04:06AM +0300, Mihail Balikov wrote:
> > Hi,
> >
> > is it correct to use such configuration :
> >
> > sysctl -w net.inet.ip.fw.one_pass=0
> >
> >   # process only outgoing packets
> > ipfw add 10 allow all from any to any in
> >   # shape whole network to 1Mb/s
> > ipfw add 15 pipe 15 all from any to 1.2.3.0/24
> > ipfw pipe 15 config bw 1Mbit/s
> >   # shape every host to 64Kb/s
> > ipfw add 20 pipe 20 all from any to 1.2.3.0/24
> > ipfw pipe 20 config mask dst-ip 0x000000ff bw 64Kbit/s
> >   # transmit packet
> > ipfw add 30 allow all from any to any
> >
> > regards,
> > Mihail
> >
> >
> > To Unsubscribe: send mail to majordomo@FreeBSD.org
> > with "unsubscribe freebsd-ipfw" in the body of the message
>
> To Unsubscribe: send mail to majordomo@FreeBSD.org
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>


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