Reference Guide

Policy-Based QoS Configurations
Policy-based QoS configurations consist of the components shown in the following example.
Figure 107. Constructing Policy-Based QoS Configurations
Classify Traffic
Class maps differentiate traffic so that you can apply separate quality of service policies to each class.
For both class maps, Layer 2 and Layer 3, FTOS matches packets against match criteria in the order that you configure
them.
Creating a Layer 3 Class Map
A Layer 3 class map differentiates ingress packets based on the DSCP value or IP precedence, and characteristics
defined in an IP ACL.
You may specify more than one DSCP and IP precedence value, but only one value must match to trigger a positive
match for the class map.
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