ipfw: bandwidth limiting

Martin Schweizer lists_freebsd at bluewin.ch
Mon Apr 6 12:16:18 PDT 2009


Hello Wojciech

Am Sun, Apr 05, 2009 at 02:08:09PM +0200 Wojciech Puchar schrieb:
> >[snip]
> >$ipfwcmd pipe 1 config bw 80KByte/s
> >$ipfwcmd add pipe 1 ip from any to 192.168.10.0/24{100-254} via em1
> >[snip]
> >
> >I'm not sure it works. When I do a large download which takes long and
> >anybody else want download too, this download will only get a reduce
> >bandwidth. I expect that the second download get same rate as the first one
> >(and reduce the bandwidth from the first one). Is that correct?
> 
> your example limits it all to 80kB/s but does no traffic management. so it 
> may get the same rate (half by half) or may not.
> 
> 
> do
> 
> $ipfwcmd pipe 1 config bw 80kByte/s
> $ipfwcmd queue 1 config pipe 1 weight 1  mask dst-ip 0xffffffff
> $ipfwcmd add queue 1 ip from any to 192.168.10.0/24{100-254} via em1
> 
> this will limit them to 80kB/s and perform fair-sharing based of hosts.
> 
> for example if one user on one computer will start 100 downloads, and 
> other on other computer will start 1 download, this will ensure that first 
> user will not takeover most bandwidth.

I will try it in the next days and give you a feedback. Thanks.

Regards

-- 

Martin Schweizer
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