IPFW Bandwidth throttling?

[Roger]

Date sent:      	Wed, 7 May 2003 09:03:55 -0400 (EDT)
From:           	Chris McGee
Subject:        	IPFW Bandwidth throttling?
> 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?
> 
> Thanks,
> Chris
man ipfw, didn't show anything obvious, have you checked your  
net.inet.ip.fw.one_pass sysctl var. If it's 0 then the rest of your rules run on 
the packet as well (I think).

Have you got a return rule set as well ?  Is anything limiting what the outside 
world is sending back ?

Roger.