H3C Technologies H3C S12500 Series Switches - Manual (Page 33)

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QoS configuration approaches
QoS configuration approach overview
You can configure QoS in these approaches:
• MQC approach
• Non-MQC approach
Some features support both approaches, but some support only one.
MQC approach
In the modular QoS configuration (MQC) approach, you configure QoS service parameters by using
QoS policies. A QoS policy defines the shaping, policing, or other QoS actions to take on different
classes of traffic. It is a set of class-behavior associations.
A class is a set of match criteria for identifying traffic, and it uses the AND or OR operator:
• If the operator is AND, a packet must match all the criteria to match the class.
• If the operator is OR, a packet matches the class if it matches any of the criteria in the class.
A traffic behavior defines a set of QoS actions to take on packets, such as priority marking and redirect.
By associating a traffic behavior with a class in a QoS policy, you apply the specific set of QoS actions
to the class of traffic.
Non-MQC approach
In the non-MQC approach, you configure QoS service parameters without using a QoS policy. For
example, you can use the line rate feature to set a rate limit on an interface without using a QoS policy.
Configuring a QoS policy
Figure 5 shows how to configure a QoS policy.