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This example show network interface
independet traffic controller. Its complette example to show imq device
usage for a router that have five network interfaces and
ethernet bridge with ebtables patch. Trafics controler is used to
manage upload and download
bandwidth. We have assigned more public IP address from ISP with 1Mbit for download and 1Mbit for upload. "Customers" will have assigned private (NATed) and public network address. We have those NIC's assigned for: eth0 - Internet from ISP eth1 - "Customers" with public IP's wlan0 - "Customers" with public IP's (WiFi) eth2 - "Customers" with private IP's wlan1 - "Customers" with private IP's (WiFi) Public IP's range will be 195.66.77.0/24 and private IP's range 10.0.0.0/16. The example not show the firewall and wireless interfaces setup. The example script with comment: #!/bin/sh # Example script to show IMQ driver usage # Author : Jiri Fojtasek <jiri.fojtasek(at)hlohovec.net> http:///qos # Version: 1.0 #NIC's and bridge br0 connected to ISP brctl addbr br0 brctl addif br0 eth0 brctl addif br0 eth1 brctl addif br0 wlan0 ifconfig eth0 0.0.0.0 up ifconfig eth1 0.0.0.0 up ifconfig wlan0 0.0.0.0 up ifconfig br0 195.66.77.1 netmask 255.255.255.0 route add default gw 195.66.77.99 #NIC's for private network ifconfig eth2 10.0.1.1 netmask 255.255.255.0 ifconfig wlan1 10.0.2.1 netmask 255.255.255.0 #Setup IMQ devices (numdevs parameter specifies number of imq devices will be loaded) modprobe imq numdevs=2 ifconfig imq0 up ifconfig imq1 up #Setup the NAT iptables -t nat -A POSTROUTING -s 10.0.0.0/16 -o br0 -j SNAT --to 195.66.77.1 #Setup traffic controler for imq0 (download) tc qdisc del dev imq0 root tc qdisc add dev imq0 root handle 1 htb default 99 tc class add dev imq0 parent 1: classid 1:10 htb rate 1Mbit #Customer 1 with rate 64 Kbit tc class add dev imq0 parent 1:10 classid 1:1000 htb rate 64Kbit ceil 64Kbit tc qdisc add dev imq0 parent 1:1000 handle 1000 sfq tc filter add dev imq0 parent 1:0 protocol ip prio 200 handle 1000 fw classid 1:1000 #Customer 2 with rate 128 Kbit tc class add dev imq0 parent 1:10 classid 1:1010 htb rate 128Kbit ceil 128Kbit tc qdisc add dev imq0 parent 1:1010 handle 1010 sfq tc filter add dev imq0 parent 1:0 protocol ip prio 200 handle 1010 fw classid 1:1010 #Customer 3 with rate 256 Kbit tc class add dev imq0 parent 1:10 classid 1:1020 htb rate 256Kbit ceil 256Kbit tc qdisc add dev imq0 parent 1:1020 handle 1020 sfq tc filter add dev imq0 parent 1:0 protocol ip prio 200 handle 1020 fw classid 1:1020 #Default class with rate 32 Kbit tc class add dev imq0 parent 1:10 classid 1:99 htb rate 32Kbit ceil 32Kbit #Setup traffic controler for imq1 (upload) tc qdisc del imq1 root tc qdisc add dev imq1 root handle 1 htb default 98 tc class add dev imq1 parent 1: classid 1:20 htb rate 1Mbit #Customer 1 with rate 64 Kbit tc class add dev imq1 parent 1:20 classid 1:2000 htb rate 64Kbit ceil 64Kbit tc qdisc add dev imq1 parent 1:2000 handle 2000 sfq tc filter add dev imq1 parent 1:0 protocol ip prio 200 handle 2000 fw classid 1:2000 #Customer 2 with rate 128 Kbit tc class add dev imq1 parent 1:20 classid 1:2010 htb rate 128Kbit ceil 128Kbit tc qdisc add dev imq1 parent 1:2010 handle 2010 sfq tc filter add dev imq1 parent 1:0 protocol ip prio 200 handle 2010 fw classid 1:2010 #Customer 3 with rate 256 Kbit tc class add dev imq1 parent 1:20 classid 1:2020 htb rate 256Kbit ceil 256Kbit tc qdisc add dev imq1 parent 1:2020 handle 2020 sfq tc filter add dev imq1 parent 1:0 protocol ip prio 200 handle 2020 fw classid 1:2020 #Default class with 32 Kbit tc class add dev imq1 parent 1:20 classid 1:99 htb rate 32Kbit ceil 32Kbit #Setup nfmark for each Customer #Customer 1 with public IP 195.66.77.2 #Download iptables -t mangle -A POSTROUTING -d 195.66.77.2 -j MARK --set-mark 1000 #Upload iptables -t mangle -A POSTROUTING -s 195.66.77.2 -j MARK --set-mark 2000 #Customer 2 with private IP 10.0.1.2 #Download iptables -t mangle -A POSTROUTING -d 10.0.1.2 -j MARK --set-mark 1010 #Upload iptables -t mangle -A POSTROUTING -s 10.0.1.2 -j MARK --set-mark 2010 #Customer 3 with private IP 10.0.2.2 #Download iptables -t mangle -A POSTROUTING -d 10.0.2.2 -j MARK --set-mark 1020 #Upload iptables -t mangle -A POSTROUTING -s 10.0.2.2 -j MARK --set-mark 2020 #And finnaly direct traffic to right IMQ device :) #Download iptables -t mangle -A POSTROUTING -d 10.0.0.0/16 -j IMQ --todev 0 iptables -t mangle -A POSTROUTING -d 195.66.77.0/24 -j IMQ --todev 0 #Upload iptables -t mangle -A POSTROUTING -s 10.0.0.0/16 -j IMQ --todev 1 iptables -t mangle -A POSTROUTING -s 195.66.77.0/24 -j IMQ --todev 1 |
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