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Figure 4-3-7
QoS
This switch classifies the ingress packets, maps the packets to different priority queues and then
forwards the packets according to specified scheduling algorithms to implement QoS function.
Traffic classification: Identifies packets conforming to certain characters according to certain
rules.
Map: The user can map the ingress packets to different priority queues based on the priority
modes. This switch implements priority modes based on port.
Queue scheduling algorithm: When the network is congested, the problem that many packets
compete for resources must be solved, usually in the way of queue scheduling. The switch
supports four schedule modes: SP.
Priority Mode
This switch implements three priority modes based on port, on 802.1P and on DSCP. By default,
the priority mode based on port is enabled and the other two modes are optional.
Port Priority
Port priority is a priority level of the port. After port priority is configured, the data stream will be
mapped to the egress queues directly according to the priority level of the port.
