TP-Link TL-SG1016PE Easy Smart Switch User Guide - Page 41

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Chapter 8 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.  QoS This switch classifies the ingress packets, maps the packets to different priority queues and then forwards the packets according to weighted round robin (WRR) scheduling algorithm to implement QoS function. Figure 8-1 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 three QoS modes based on port /802.1P /DSCP.  WRR-Mode: Weight Round Robin Mode. In this mode, packets in all the queues are sent in order based on the weight value for each queue and every queue can be assured of a certain service time. The weight value indicates the occupied proportion of the resource. In WRR mode, though the queues are scheduled in order, the service time for each queue is not fixed, that is to say, if a queue is empty, the next queue will be scheduled. In this way, the bandwidth resources are made full use of. The default weight value ratio of TC1, TC2, TC3 and TC4 is 1:2:4:8.  QoS Mode This switch implements three QoS modes based on port /802.1P /DSCP. By default, the QoS mode based on port is enabled and the others are optional. 34

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Chapter 8
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.
QoS
This switch classifies the ingress packets, maps the packets to different priority queues and
then forwards the packets according to weighted round robin (WRR) scheduling algorithm to
implement QoS function.
Figure 8-1 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 three QoS modes based on port /802.1P /DSCP.
WRR-Mode: Weight Round Robin Mode. In this mode, packets in all the queues are sent in
order based on the weight value for each queue and every queue can be assured of a
certain service time. The weight value indicates the occupied proportion of the resource. In
WRR mode, though the queues are scheduled in order, the service time for each queue is
not fixed, that is to say, if a queue is empty, the next queue will be scheduled. In this way,
the bandwidth resources are made full use of. The default weight value ratio of TC1, TC2,
TC3 and TC4 is 1:2:4:8.
QoS Mode
This switch implements three QoS modes based on port /802.1P /DSCP. By default, the QoS
mode based on port is enabled and the others are optional.
34