IPFW Bandwidth throttling?

[Barry Irwin]

Another thing to maybe try is up the HZ setting in your kernel. Have a look
at the dummynet page.

Barry


--
Barry Irwin         bvi at itouchlabs.com                    Tel:
+27214875178
Systems Administrator: Networks And Security
iTouch Technology
iTouch TAS      http://www.itouchlabs.com         Mobile: +27824457210


----- Original Message -----
From: "Greg Panula" <greg.panula at dolaninformation.com>
To: "Chris McGee" <chris at xecu.net>
Cc: <freebsd-security at freebsd.org>
Sent: Wednesday, May 07, 2003 3:55 PM
Subject: Re: IPFW Bandwidth throttling?


> Chris McGee wrote:
> >
> > I am trying to limit outgoing SMTP traffic to about 14 Mbps and these
are
> > the IPFW rules I am using.
> >
> >         ${fwcmd} add pipe 1 tcp from 192.168.0.0/24 to any 25 out via
dc0
> >         ${fwcmd} pipe 1 config bw 14Mbit/s
> >
> > I've tried multiple tweaks to the pipe rule and I seem to be missing
> > something.  I only get about half the bandwidth I specify.  Is this
normal
> > behavior?  Is there something wrong with the rule I'm running?
> >
>
> The pipe config & pipe rule look correct.
>
> Try 'ipfw pipe list' to confirm the pipe is configured for the correct
> bandwidth and not dropping excessive amounts of packets.
>
> Is dc0 configured for 100Mbps or 10Mbps?  7Mbps is close to the ceiling
> for a 10Mbps link.
>
> Are you sure you have ~2MBps worth of smtp traffic to pass when you're
> watching?  If you increase the bandwidth on the pipe do you see more
> than the ~7Mbps you're currently seeing?
>
>
> good luck,
>  greg
> _______________________________________________
> freebsd-security at freebsd.org mailing list
> http://lists.freebsd.org/mailman/listinfo/freebsd-security
> To unsubscribe, send any mail to
"freebsd-security-unsubscribe at freebsd.org"
>
>
>