The relative order of this queue to the other queues within
the cable interface. The smaller number has higher order.
That is, 0 is the highest order and 10 is the lowest order.
The scheduler will serve the requests in higher order queue
up to the number of requests defined in
cdxBWQueueNumServedBeforeYield before serving requests in
the next higher order queue.
If there are n queues on this interface, the queue order
will be 0 to n-1 and maximum number of requests defined as
cdxBWQueueNumServedBeforeYield in order 0 queue will be
served before the requests in order 1 queue to be served.