[altq 886] how to set the max and min bandwidth to a traffic flow

["xuht" <xuht@cn.is-one.net>]

    I am new in ALTQ,and I have read some docs in the packets about it,but i am still not very clear about some questions:
     what i want to know is how to configure the OBQ to Guarantee minimum bandwidth and limit the maximum bandwidth to a traffic flow.
   

Is my configuration right?

 

#limit the maximum bandwidth
#no borrow?
class cbq fxp0 my_class defaut_class pbandwidth 50

    and i don't know how to cofigure the minimum bandwidth.

    hoping for your help.

    Thank you!