TP-Link TL-SG3216 TL-SG3216 V1 User Guide - Page 114
QoS
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Chapter 9 QoS QoS (Quality of Service) functions to provide different quality of service for various network applications and requirements and optimize the bandwidth resource distribution so as to provide a network service experience of a better quality. ¾ 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. Figure 9-1 QoS function z Traffic classification: Identifies packets conforming to certain characters according to certain rules. z Map: The user can map the ingress packets to different priority queues based on the priority modes. This switch implements three priority modes based on port, on 802.1P and on DSCP. z Queue scheduling algorithm: When the network is congested, the problem that many packets complete for resources must be solved, usually in the way of queue scheduling. The switch supports four schedule modes: SP, WRR, SP+WRR and Equ. ¾ 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. 1. Port Priority Port priority is just a property of the port. After port priority is configured, the data stream will be mapped to the egress queues according to the CoS of the port and the mapping relationship between CoS and queues. 2. 802.1P Priority 107