Hello It seems to me that 1:21 borrows much more than 1134Kbit and it does it from other classes (not only 1:31). I dont know why?. Any ideas ? When i set 1:21 bounded everything is ok but i wanted 1:21 to borrow bandwidth from 1:31 when it need to. class cbq 1: root rate 100Mbit (bounded,isolated) prio no-transmit class cbq 1:1 parent 1: leaf 8037: rate 400Kbit (bounded,isolated) prio 1 class cbq 1:31 parent 1:2 leaf 803a: rate 1134Kbit (bounded) prio 4 class cbq 1:2 parent 1: rate 1584Kbit (bounded,isolated) prio 2 class cbq 1:21 parent 1:2 leaf 8038: rate 450Kbit (isolated) prio 3 class cbq 1:4 parent 1: leaf 8039: rate 97016Kbit (bounded,isolated) prio 5 class cbq 1:5 parent 1: leaf 803b: rate 1000Kbit (bounded,isolated) prio 1 1:1 interactive traffic 1::21 mail www news etc.. 1:31 bulk data 1:4 local lan traffic 1:5 local lan interactive traffic Thanks for help :) Rafal -- Encyklopedia multimedialna w prezencie! http://www.e-mail.onet.pl