Hi, > Is PRIO = Simple 3-band scheduler? Yes (and queueing discipline ;-) ). > If PRIO is used as in qdisc root, does it service the 1st band traffic first > before 2nd and then 3rd band? Yes. It only sends from band n if there is nothing to send in bands less than n. That's essesially the same as CBQ does except that CBQ sometimes does other things in order to fullfill other reqirements. > The many documentations found on the web apparently interchange the terms > queuing algorithm and scheduler frequently... Yes, so don't be confused by that. Christian