TP-LINK TL-SG3210 User Manual

 

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By default, the mapping relation between tag and the egress queue is: 

(0-7)-CoS 0, (8-15)-CoS 1, (16-23)-CoS 2, (24-31)-CoS 3, (32-39)-CoS 4, 

(40-47)-CoS 5, (48-55)-CoS 6, (56-63)-CoS 7. 

Map DSCP values 10-12 to CoS 2: 

TL-SG3424(config)# qos queue dscp-map 10-12 2 

The qos queue mode command is used to configure the Schedule Mode. To 

return to the default configuration, please use no qos queue mode command. 

When the network is congested, the program that many packets complete for 

resources must be solved, usually in the way of queue scheduling. The switch 

will control the forwarding sequence of the packets according to the priority 

queues and scheduling algorithms you set. On this switch, the priority levels are 

labeled as TC0, TC1… TC3. 

qos queue mode { sp | wrr | sp+wrr | equ } 

no qos queue mode 

sp  —— Strict-Priority Mode. In this mode, the queue with higher priority will 

occupy the whole bandwidth. Packets in the queue with lower priority are sent 

only when the queue with higher priority is empty. 

wrr  —— Weight Round Robin Mode. In this mode, packets in all the queues 

are sent in order based on the weight value for each queue. The weight value 

ratio of TC0, TC1, TC2 and TC3 is 1:2:4:8. 

sp+wrr  —— Strict-Priority + Weight Round Robin Mode. In this mode, the 

switch provides two scheduling groups, SP group and WRR group. Queues in 

SP group and WRR group are scheduled strictly based on Strict-Priority mode 

while the queues inside WRR group follow the WRR mode. In SP + WRR mode, 

TC3 is the SP group; TC0, TC1 and TC2 belong to the WRR group and the 

weight value ratio of TC0, TC1 and TC2 is 1:2:4. In this way, when scheduling 

queues, the switch allows TC3 to occupy the whole bandwidth following the SP 

mode and the TC0, TC1 and TC2 in the WRR group will take up the bandwidth 

according to their ratio 1:2:4.