This section describes how to configure CTC-based traffic policies for VLAN packets.
To manage or limit the traffic that goes into or flows in a network according to the class of service, you need to configure QoS traffic policies based on the complex traffic classification. That is, you need to provide differentiated services according to the VLAN attributes of packets. In this way, traffic from different users, such as voice services, video services, and data services can be served differently in terms of bandwidth, delay, and precedence. After VLAN QoS is used for the traffic entering the VLAN network, the traffic can either retain its QoS attributes of the previous network, or has its QoS attributes modified according to the configurations of the VLAN. In this manner, the traffic continues to be transmitted in the VLAN network.
CTC-based traffic policies are usually configured on the router located at the edge of the network, whereas traffic policies that are based on simple traffic classification are configured on the router located near the core of a network.