TP-Link TL-SG5426 User Guide - Page 190
Enabling CoS, Selecting the Queue Mode, Traffic Classes, Command Attributes, Strict
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3 Class of Service Configuration CLI - The following example shows how to change the CoS assignments. Console(config)#interface ethernet 1/1 Console(config-if)#queue cos-map 0 0 Console(config-if)#queue cos-map 1 1 Console(config-if)#queue cos-map 2 2 Console(config-if)#end Console#show queue cos-map ethernet 1/1 Information of Eth 1/1 CoS Value: 0 1 2 3 4 5 6 7 Priority Queue: 0 1 2 1 2 2 3 3 Console# 4-116 4-187 4-189 Enabling CoS Enable or disable Class of Service (CoS). Command Attributes • Traffic Classes - Click to enable Class of Service. (Default: Enabled) Web - Click Priority, Traffic Classes Status. Figure 3-86 Enable Traffic Classes Selecting the Queue Mode You can set the switch to service the queues based on a strict rule that requires all traffic in a higher priority queue to be processed before lower priority queues are serviced, or use Weighted Round-Robin (WRR) queuing that specifies a relative weight of each queue. WRR uses a predefined relative weight for each queue that determines the percentage of service time the switch services each queue before moving on to the next queue. This prevents the head-of-line blocking that can occur with strict priority queuing. Command Attributes • WRR - Weighted Round-Robin shares bandwidth at the egress ports by using scheduling weights 1, 2, 4, 8, for queues 0 through 3 respectively. (This is the default selection.) • Strict - Services the egress queues in sequential order, transmitting all traffic in the higher priority queues before servicing lower priority queues. 3-147