Applying the QoS policy

You can apply a QoS policy to the following destinations:

• Interface—The QoS policy takes effect on the traffic sent or received on the interface.

• VLAN—The QoS policy takes effect on the traffic sent or received on all ports in the VLAN.

• Globally—The QoS policy takes effect on the traffic sent or received on all ports.

• Control plane—The QoS policy takes effect on the traffic received on the control plane.

• User profile—The QoS policy takes effect on the traffic sent or received by the online users of the user profile.

You can modify traffic classes, traffic behaviors, and class-behavior associations in a QoS policy even after it is applied (except that it is applied to a user profile). If a traffic class uses an ACL for traffic classification, you can delete or modify the ACL.