Re: [LARTC] incoming traffic??

[Graste <graste@gmx.net>]

On Sun, 11 May 2003 10:13:08 +0000, sun reflex4 <sunreflex4@hotmail.com> 
wrote:

> well, I have 2 interfaces, but I didn't get what you mean. You say I use 
> one for incoming and one for outgoing? can this then be achieved only 
> with iptables and tc?
>
> Best greetings
>

Yes it can. Outgoing traffic can be shaped on your outgoing interface on 
your gateway. Incoming traffic is a little bit trickier - but if you have 
two interfaces you can use the interface that connects to your lan. Check 
http://www.docum.org/stef.coene/qos/kptd/ and you get a clue where to mark 
packets with iptables and then use tc and tc filter to do your shaping.

e.g. for download/incoming traffic:

#delete qdisc on dev
tc qdisc del dev $INTIF root 2>/dev/null
#new root qdisc
tc qdisc add dev $INTIF root handle 2:0 htb default 20
#some classes
tc class add dev $INTIF parent 2:0 classid 2:2 htb rate 10mbps ceil 101mbps
tc class add dev $INTIF parent 2:2 classid 2:20 htb rate 2000kbps ceil 
101mbps prio 2 ...

or whatever qdiscs and classes and then:

#create a class for a single user for example
tc class add dev $INTIF parent 2:20 classid 2:2001 htb rate 1kbps ceil 
200kbps
#mark his incoming traffic
/sbin/iptables -A POSTROUTING -t mangle -o $INTIF -p tcp --destination 
192.168.1.1 -j MARK --set-mark 2001
#send all his incoming traffic to his class
tc filter add dev $INTIF parent 2:0 protocol ip handle 2001 fw flowid 
2:2001

$INTIF is the interface, that connects to your lan. Dunno if it is all 
right what I wrote here fast. So you have to recheck before use. Hope it 
helps anyway.


Regards,

Graste

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