Your QoS policy should prioritize the use of bandwidth to provide quality of service to customers or users. The IPQoS metering modules enable you to measure and control bandwidth allocation among the various traffic classes on an IPQoS-enabled host.
Consider the following questions when determining how to effectively manage traffic on your network:
What are the traffic problem areas for your local network?
What must you do to achieve optimum use of available bandwidth?
What are your site's critical applications that must be given highest priority?
Which applications are sensitive to congestion?
What are your less critical applications that can be given a lower priority?