Traffic Control Issue, please help

[gl0be1t]

Hi all!

I am at the very beggining of entering into the world of linux and networks! I got basic knowledge of tcp/ip networks and routing. I've set up home network and everything is working fine. I got 3 interfaces on my router: eth0:Internet; eth1: Internal Network; eth2: DMZ. It's all set up with iptables and is working fine.

I want to implement traffic control using tc, which is part of the kernel. But it seems very difficult to me, I've read a couple of tutorials, but I still don't get it right... so can anyone please help me for this:

I want to prioritize the network traffic for HTTP/HTTPS/MYSQL usage as about 80 % of all bandwidth, which must go through my DMZ part of the network. There I got Microsoft Windows 2003 server, which has Web & SQL Server on it. I need the network traffic to be prioritized to eth2, whenever some users try to access its web/mysql services, and the other traffic should to stay at 20%, while the main traffic is in use.

Please help me to achieve this, I will be very gratefull!

[RDU]

Hi,
Take a look at WonderShaper here : Wonder Shaper
It's basicaly a small bash script using tc
You wan use it as it is (just enter your bandwidth and port you want to prioritize) or in your case with 3 interface you can look at how tc work and customize it yourself easily.

[gl0be1t]

Thank you for the source. I've read it up, and I tried to build something, like a working HTB QDISK, but I failed

The error which I receive is:
[root@test1 ~]# ./my-tc-basic.htb
RTNETLINK answers: No such file or directory
We have an error talking to the kernel
RTNETLINK answers: No such file or directory
We have an error talking to the kernel

Please, help me out to find where my error is, i will be very very very thankfull. Here is my kind of script:

#!/bin/bash
#
# Variables:
TC="/sbin/tc"

#eth0 (10.100.40.0/24 WAN) -------------------------------------
$TC qdisc del dev eth0 root
$TC qdisc add dev eth0 handle 10: root htb
$TC class add dev eth0 parent 10: classid 10:10 htb rate 100Mbit
$TC class add dev eth0 parent 10:10 classid 10:102 htb rate 20mbit ceil 100mbit
$TC class add dev eth0 parent 10:10 classid 10:101 htb rate 80mbit ceil 100mbit
$TC filter add dev eth0 parent 10:0 protocol ip prio 1 u32 match ip src 192.168.8.0/24 flowid 10:102
$TC filter add dev eth0 parent 10:1 protocol ip prio 2 u32 match ip src 192.168.9.0/24 flowid 10:101

#eth1 (192.168.8.0/24 Internal LAN)
$TC qdisc del dev eth1 root
$TC qdisc add dev eth1 handle 11: root htb
$TC class add dev eth1 parent 11: classid 11:11 htb rate 100Mbit
$TC class add dev eth1 parent 11:11 classid 11:102 htb rate 20mbit ceil 100mbit
$TC class add dev eth1 parent 11:11 classid 11:101 htb rate 80mbit ceil 100mbit
$TC filter add dev eth1 parent 11:0 protocol ip prio 1 u32 match ip src 10.100.40.0/24 flowid 11:102
$TC filter add dev eth1 parent 11:1 protocol ip prio 2 u32 match ip src 192.168.9.0/24 flowid 11:101

#eth2 (192.168.9.0/24) DMZ
$TC qdisc del dev eth2 root
$TC qdisc add dev eth2 handle 12: root htb
$TC class add dev eth2 parent 12: classid 12:12 htb rate 100Mbit
$TC class add dev eth2 parent 12:12 classid 12:102 htb rate 20mbit ceil 100mbit
$TC class add dev eth2 parent 12:12 classid 12:101 htb rate 80mbit ceil 100mbit
$TC filter add dev eth2 parent 12:0 protocol ip prio 1 u32 match ip src 10.100.40.0/24 flowid 12:101