This task map lists the major tasks for planning a QoS policy.
Task |
Description |
For Instructions |
---|---|---|
1. Design your network topology to support IPQoS. |
Identify the hosts and routers on your network to provide differentiated services. | |
2. Define the classes into which services on your network must be divided. |
Examine the types of services and SLAs that are offered by your site, and determine the discrete traffic classes into which these services fall. | |
3. Define filters for the classes. |
Determine the best ways of separating traffic of a particular class from the network traffic flow. | |
4. Define flow-control rates for measuring traffic as packets leave the IPQoS system. |
Determine acceptable flow rates for each class of traffic. | |
5. Define DSCPs or user-priority values to be used in the QoS policy. |
Plan a scheme to determine the forwarding behavior that is assigned to a traffic flow when the flow is handled by the router or switch. | |
6. If applicable, set up a statistics-monitoring plan for traffic flows on the network. |
Evaluate the traffic classes to determine which traffic flows must be monitored for accounting or statistical purposes. |
The rest of this section explains how to plan the QoS policy of an IPQoS-enabled system. To plan the QoS policy for the Diffserv router, refer to the router documentation and the router manufacturer's web site.