> is the naming of classes essential for building them correctly? is parent 1:1 classid 10:0 somehow different from parent 1:1 classid 1:2? up to now i thought classid was only a name and the parent would be enough to make the classes' positions in the tree unambiguously... I think I mentioned this in my review of the recent howto updates. Here's the explanation from http://luxik.cdi.cz/~devik/qos/htb/ Note: In general (not just for HTB but for all qdiscs and classes in tc), handles are written x:y where x is an integer identifying a qdisc and y is an integer identifying a class belonging to that qdisc. The handle for a qdisc must have zero for its y value and the handle for a class must have a non-zero value for its y value. The "1:" above is treated as "1:0".