TP-Link T2500G-10MPS T2500G-10MPSUN V1 Configuration Guide - Page 477

Configuring QoS DiffServ Configuration Queue Weight Configure the weight value of the each TC queue. In WRR mode, the 8 queues will take up the bandwidth according to their ratio. The default values of TC0, TC1, TC2, TC3, TC4, TC5,TC6 and TC7 are 1, 2, 4, 8, 16, 32, 64 and 127 respectively. In SP+WRR mode, TC7 and the queue with its weight value set as 0 are in the SP group; other queues, with none-zero weight value, belong to the WRR group. In this SP+WRR scheduling mode, the queues in the SP group is scheduled preferentially (TC7>TC6>TC5>TC4>TC3>TC2>TC1>TC0 in strict priority). When there is no packets to be sent in the SP group, the queues in the WRR group will be scheduled according to the weight value of each queue. The default weight values of TC0, TC1, TC2, TC3, TC4, TC5 and TC6 are 1, 2, 4, 8, 16, 32 and 64 respectively, while the value of TC7 is 0 and non-configurable. 3) Click Apply. Note: With ACL Redirect feature, the switch maps all the packets that meet the configured ACL rules to the new TC queue, regardless of the mapping relations configured in this section. 2.2 Using CLI 2.2.1 Configuring Priority Mode The instructions of the three priority modes are described respectively in this section.  Configuring 802.1 Priority Step 1 configure Enter global configuration mode Step 2 qos cos Enable the 802.1P priority. Step 3 qos queue cos-map {tag-id/cos-id} {tc-id} Configure the Tag-id-TC queues mapping relations or the CoS-id-TC mapping relations. tag-id: Specify the Tag-ID. The valid values are from 0 to 7. cos-id: Specify the CoS-ID. The valid values are from 0 to 7. tc-id: Specify the TC-ID. The valid values are from 0 to 7. Step 4 show qos status Verify that 802.1P priority is enabled. show qos cos-map Verify the mapping relations between the Tag-id / CoS-id and TC queues. Configuration Guide 450