Hi there, I have a question with regards to cascading multiple HTB qdiscs. Assume that I want to build the following hierarchy: (qdisc htb 1:0) -> (class htb 1:1) -> (qdisc htb 2:0) -> (class htb 2:1) -> (class htb 2:2) I want to attache aggregate u32 filters at 1:0 for supernets, then at 2:0 (and 3:0, 4:0, etc), I attach the more specific u32 filters for say HTTP and SMPT shaping. so I attach the following filters: tc filter add dev eth0 parent 1:0 protocol ip u32 match ip dst 172.16.1.0/24 classid 1:1 so that all the class c traffic is directed to 1:1 then for that c class web traffic tc filter add dev eth0 parent 2:0 protocol ip u32 match ip sport 80 0xffff classid 2:1 then for that c class smtp traffic tc filter add dev eth0 parent 2:0 protocol ip u32 match ip sport 25 0xffff classid 2:2 and so on and so forth however, when I build that setup, the c class traffic gets directed to 1:1 alright, but nothing goes nay further in 2:1 and 2:2 my reasoning could be one of the following: 1) you cannot cascade HTB qdiscs, which to me is illogical, it defies the concept and adventages of having a hierarchical setup. 2) there is something wrong with the way I attached the filters. 3) I totally misunderstood HTB! Please advise. Thanks a million.
