>>>When I try to add some rules with HTB (f.i. tc qdisc add dev eth0 root >>>handle 1: htb default 1:1 ), I got the following error message: >>>Unknown qdisc "htb", hence option "default" is unparsable >>> >>> >>> > > >Correct me if I'm wrong but I believe the "default" option requires a >class not a parent:class combo. When I create an htb qdisc I use the >command: > >tc qdisc add dev eth1 root handle 1: htb default 40 > >but I suppose in your case you could use: > >tc qdisc add dev eth1 root handle 1: htb default 1 >// I've tried the above command and it returns just fine > Well, in fact my exact line is: tc qdisc add dev eth1 root handle 1: htb default 12 So it's the same than yours (sorry I hadn't noticed the slight difference with Patrick's line) but it doesn't work. Thanks anyway. Emmanuel