TP-LINK TL-SG5412F User Manual

 

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 specified scheduling algorithms to implement QoS function.   

 

Figure 9-1 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 priority modes based on port, on 802.1P and on DSCP.   



  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, WRR, SP+WRR and Equ.   



  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.   

115