показать / изменить настройки управления трафиком (show / manipulate traffic control settings)
QDISCS
qdisc
is short for 'queueing discipline' and it is elementary to
understanding traffic control. Whenever the kernel needs to send
a packet to an interface, it is enqueued
to the qdisc configured
for that interface. Immediately afterwards, the kernel tries to
get as many packets as possible from the qdisc, for giving them
to the network adaptor driver.
A simple QDISC is the 'pfifo' one, which does no processing at
all and is a pure First In, First Out queue. It does however
store traffic when the network interface can't handle it
momentarily.