About QoS Features
You use the QoS features to provide the most desirable flow of traffic through a network. QoS allows you to classify the network traffic, police and prioritize the traffic flow, and help avoid traffic congestion in a network. The control of traffic is based on the fields in the packets that flow through the system. You use the Modular QoS (MQC) CLI to create the traffic classes and policies of the QoS features.
QoS features are applied using QoS and queuing policies as follows:
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QoS policies include classification and marking features.
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QoS policies include policing features.
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QoS policies include shaping, weighted random early detection (WRED), and explicit congestion notification (ECN) features.
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Queuing policies use the queuing and scheduling features.
Note |
The system-defined QoS features and values that are discussed in the “Using Modular QoS CLI” section apply globally to the entire device and cannot be modified. |