TP-Link T1500-28TC TL-SL2428 T1500-28TCUN V1 Configuration Guide - Page 311

Configuring QoS Figure 2-4 Schedule Mode DiffServ Configuration Follow these steps to configure the schedule mode: 1) Select a schedule mode. SP-Mode 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-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. By default, the weight value ratio of TC0 to TC3 is 1:2:4:8. SP+WRR-Mode Strict-Priority + Weight Round Robin Mode. In this mode, the switch provides two scheduling groups, SP group and WRR group. When scheduling queues, the switch allows the queues in the SP group to occupy the whole bandwidth following the SP mode. When the SP group is empty, the queues in the WRR group will take up the bandwidth according to their weight value ratio. By default, queue TC3 is in SP group and TC0, TC1 and TC2 are in WRR group, and the weight ratio of TC0 to TC3 is 1:2:4. Equ-Mode Equal-Mode. In this mode, all the queues occupy the bandwidth equally. The weight value ratio of all the queues is 1:1:1:1. Equ-Mode is selected by default. 2) 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 Configuration Guide 290