[LARTC] priority of class

[Gery Kahn <geryk@xxxxxxxxxx>]

I installed configuration:
qdisc cbq
class
qdisc cbq

and split traffic in 2 more classes
tc class add dev eth0 parent 2:0 classid 2:21 cbq avpkt 1000 bandwidth
100Mbit \
rate 70Mbit prio 3 maxburst 20

tc qdisc add dev eth0 parent 2:21 tbf rate 70Mbit buffer 45Kb/8 limit 15Kb

tc class add dev eth0 parent 2:0 classid 2:22 cbq avpkt 1000 bandwidth
100Mbit \
rate 70Mbit prio 4 maxburst 20

tc qdisc add dev eth0 parent 2:22 tbf rate 70Mbit buffer 45Kb/8 limit 15Kb

Actualy results is Ok.I am trying to see influence of "prio" parameter of
class
and nothing happened.
Please, help me w/ your answer.