Use this procedure to enable Automatic QoS support.
From the navigation tree, double-click QoS.
From the QoS tree, double-click QoS Agent.
Select the Configuration tab.
Select the appropriate mode in the AQApplicationMode section from the following:
enablePureMode - Enables Automatic QoS functionality with DSCP remarking at egress disabled.
enableMixedMode - Enables Automatic QoS functionality with DSCP remarking at egress enabled.
Click Apply.