QoS bandwidth management allows you to control traffic
flows on a network so that traffic does not exceed network capacity
(resulting in network congestion) and also allows you to allocate
bandwidth for certain types of traffic and for applications and
users. With QoS, you can enforce bandwidth for traffic on a narrow
or a broad scale. A QoS profile rule allows you to set bandwidth
limits for individual QoS classes and the total combined bandwidth
for all eight QoS classes. As part of the steps to
Configure
QoS, you can attach the QoS profile rule to a physical interface
to enforce bandwidth settings on the traffic exiting that interface—the
individual QoS class settings are enforced for traffic matching
that QoS class (QoS classes are assigned to traffic matching
QoS
Policy rules) and the overall bandwidth limit for the profile
can be applied to all clear text traffic, specific clear text traffic originating
from source interfaces and source subnets, all tunneled traffic,
and individual tunnel interfaces. You can add multiple profile rules
to a single QoS interface to apply varying bandwidth settings to
the traffic exiting that interface.