tc qdisc add dev eth0 root handle 1: htb default 30
tc class add dev eth0 parent 1: classid 1:1 htb rate 1000kbit ceil 1000kbit
tc class add dev eth0 parent 1:1 classid 1:10 htb rate 400kbit ceil 1000kbit
tc class add dev eth0 parent 1:1 classid 1:20 htb rate 100kbit ceil 1000kbit
tc class add dev eth0 parent 1:1 classid 1:30 htb rate 500kbit ceil 1000kbit