Differentiated Services Code Point (DSCP) is a computer networking architecture mechanism for classifying and managing network traffic. DSCP can be used to provide low-latency to critical network traffic such as voice or streaming media while providing simple best-effort service to non-critical services such as web traffic or file transfers. DSCP marks allow to identify and tag traffic and prioritize traffic. DSCP marks have an integer expression.The full list of valid DSCP marks is: 0, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30, 32, 34, 36, 38, 40, 46, 48, 56.
DSCP marks are applicable only when the QoS policy attach to ports.