DRO-210i Web Configuration
DRO-210i User Manual Page 3-48
QoS Settings:
The basic building block of the Traffic Control system is qdiscs(queueing
disciplines) . If qdiscs are configured with some parameters,then packets
will be enqueued and dequeued from them. Each interface has 1 root
qdisc.
Q-Disc Type :
User can select the type of qdisc in this page as one of the following:
1.
PQ
2.
TBF
3.
HTB
Interface Name:
Allows to choose an interface on which qdisc is to be added.
Node:
Allows to choose a Node i.e Root or Child .In the case of HTB, Node can
be Root or Class.
Priority Queuing (PQ):
Priority queuing (PQ) is the basis for a class of queue scheduling
algorithms that are designed to provide a relatively simple method of
supporting differentiated service classes. In classic PQ, packets are first
classified by the system and then placed into different priority queues.
Packets are scheduled from the head of a given queue only if all queues of
higher priority are empty. Within each of the priority queues, packets are
scheduled in FIFO order.
The PRIO qdisc is a classful queuing discipline that contains an arbitrary
number of classes of different priority. A new PRIO queue will create
pfifo sub-queuing disciplines depends on number of bands . <Bands>
number of classes named m:1, m:2 and m:3 etc are created where m is the
major number of the queuing discipline and 1,2,3..are minor numbers.
Each of these classes is assembled with a pfifo as its own qdisc.
Bands:
Number of bands to create. Each band is in fact a class. The bands are
classes, and are called major:1, major:2 and so on.
