Industrial Communication Systems

Quality of Service 19-11

queuing system for Ethernet links. An extension is CBWFQ (Figure 19.6), which provides support for

user-dened

trac classes.

e

classes

allow

specifying

the

exact

amount

of

bandwidth

to

be

allocated

for

a

specic

class

of

traf-

c.

Taking

into

account

available

bandwidth

on

the

interface,

you

can

congure

up

to

64

classes

and

control

distribution among them.

19.4 Special Considerations for Managing the Quality of Service

e way to specify the parameters and rules that control QoS for IP networks is using soware tools and

devices.

It will depend on the type of network, the magnitude and the application running on it. ...