LARTC - Nov 2004 - Testing if tc works as configured and shaping rtp traffic

Hi,

I have implemented qos at my gateway, mostly for speeding up dns and 
[video,voice] chat traffic and to slow down p2p traffic. It seems every 
thing is working properly, as by browsing speed has been improved. But I 
want to test it by sending various traffic and to see through which 
qdisc  the traffic flows, so that i can be certain that it is working 
the way I want it to work.

The rules i am using are at the end of the mail.

I also have a problem with msn chat, as it uses h.323 and i want to 
prioritize rtp and rtcp traffic. I searched a solution for it a lot but 
nothing came up. Any way I can mark rtp traffic so that it can be 
redirected to a qdisc?

thanks and regards,

raj

--
#!/bin/sh
# eth0 in, eth1 out
TCQDSK_CMD="tc qdisc add dev eth1"
TCCLAS_CMD="tc class add dev eth1"
IPT_CMD="iptables -t mangle -A POSTROUTING -o eth1"

$TCQDSK_CMD root handle 1: htb default 12
$TCCLAS_CMD parent 1: classid 1:1 htb rate 20mbit ceil 20mbit
$TCCLAS_CMD parent 1:1 classid 1:10 htb rate 2mbit ceil 2mbit prio 1
$TCCLAS_CMD parent 1:1 classid 1:11 htb rate 16mbit ceil 20mbit prio 2
$TCCLAS_CMD parent 1:1 classid 1:12 htb rate 2mbit ceil 2mbit prio 3
$TCQDSK_CMD parent 1:10 handle 31: pfifo limit 5
$TCQDSK_CMD parent 1:11 handle 35: pfifo limit 5
$TCQDSK_CMD parent 1:12 handle 39: sfq perturb 10

#Hi prio
$IPT_CMD -p tcp --tcp-flags SYN,RST,ACK SYN -j CLASSIFY --set-class 1:10
$IPT_CMD -p udp --dport 53    -j CLASSIFY --set-class 1:10
$IPT_CMD -p tcp --dport 22    -j CLASSIFY --set-class 1:10
#Yahoo
$IPT_CMD -p udp --dport 5000  -j CLASSIFY --set-class 1:10
$IPT_CMD -p tcp --dport 5050  -j CLASSIFY --set-class 1:10
$IPT_CMD -p tcp --dport 5100  -j CLASSIFY --set-class 1:10
#Skype
$IPT_CMD -p udp --sport 59883 -j CLASSIFY --set-class 1:10


#Mid Prio
$IPT_CMD -p tcp --dport 21  -j CLASSIFY --set-class 1:11
$IPT_CMD -p tcp --dport 23  -j CLASSIFY --set-class 1:11
$IPT_CMD -p tcp --dport 25  -j CLASSIFY --set-class 1:11
$IPT_CMD -p tcp --dport 80  -j CLASSIFY --set-class 1:11
$IPT_CMD -p tcp --dport 110 -j CLASSIFY --set-class 1:11
$IPT_CMD -p tcp --dport 143 -j CLASSIFY --set-class 1:11
$IPT_CMD -p tcp --dport 443 -j CLASSIFY --set-class 1:11

# low prio is default
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