H3C Technologies H3C WX3000E Series Wireless Switches - Manual (Page 686)

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Item Remarks
Priority
Set the local precedence value for the port.
Local precedence is allocated by the device and has only local significance. A local
precedence value corresponds to an output queue. A packet with higher local
precedence is assigned to a higher priority output queue to be preferentially
scheduled.
Trust Mode
Set the priority trust mode of the port:
• Untrust—Uses the port priority rather than a packet priority value for priority
mapping.
• Dot1p—Uses the 802.1p priority of received packets for priority mapping.
• DSCP—Uses the DSCP value of received packets for priority mapping.
IMPORTANT:
Support for priority trust modes depends on the interface type.
Configuring a QoS policy
A QoS policy defines what QoS actions to take on what class of traffic for purposes such as traffic
shaping or traffic policing. Before configuring a QoS policy, be familiar with these concepts: class, traffic
behavior, and policy.
Class
Classes identify traffic.
A class is identified by a class name and contains some match criteria for identifying traffic. The
relationship between the criteria can be:
• AND—A packet is considered belonging to a class only when the packet matches all the criteria in
the class.
• OR—A packet is considered belonging to a class if it matches any of the criteria in the class.
Traffic behavior
A traffic behavior, identified by a name, defines a set of QoS actions for packets.
Policy
A policy associates a class with a traffic behavior to define what actions to take on which class of traffic.
You can define multiple class-traffic behavior associations in a policy.
You can apply a policy to a port to regulate traffic sent or received on the port. A QoS policy can be
applied to multiple ports, but in one direction (inbound or outbound) of a port, only one QoS policy can
be applied.