показать / изменить настройки управления трафиком (show / manipulate traffic control settings)
Классы (Classes)
Some qdiscs can contain classes, which contain further qdiscs -
traffic may then be enqueued in any of the inner qdiscs, which
are within the classes. When the kernel tries to dequeue a
packet from such a classful qdisc it can come from any of the
classes. A qdisc may for example prioritize certain kinds of
traffic by trying to dequeue from certain classes before others.
