TP-Link TL-SL5428E User Guide - Page 143

TL-SL5428E 24-port 10/100Mbps + 4-port Gigabit L2 Managed Switch CLI Guide Syntax qos dot1p enable no qos dot1p enable Command Mode Global Configuration Mode Example Enable the mapping relation between IEEE 802.1P Priority and Egress Queue: TP-LINK(config)# qos dot1p enable qos dot1p config Description The qos dot1p config command is used to configure the mapping relation between IEEE 802.1P Priority and Egress Queue. To return to the default configuration, please use no qos dot1p config command. IEEE 802.1P gives the Pri field in IEEE 802.1Q tag a recommended definition. This field is used to divide packets into 8 priorities. When IEEE 802.1P Priority is enabled, the packets with IEEE 802.1Q tag are mapped to different priority levels based on IEEE 802.1P priority mode. The untagged packets are mapped based on port priority mode. Syntax qos dot1p config {tag} {cos-id} no qos dot1p config Parameter tag -- The 8 priority levels defined by IEEE 802.1P, ranging from 0 to 7. cos-id -- The priority level the packets with tag are mapped to. It ranges from 0 to 3, which represent TC0, TC1, TC2, TC3 respectively. Command Mode Global Configuration Mode User Guidelines 1. By default, the mapping relation between tag and the egress queue is: 0-TC1, 1-TC0, 2-TC0, 3-TC1, 4-TC2, 5-TC2, 6-TC3, 7-TC3 2. Among the priority levels TC0-TC3, the bigger value, the higher p r i o r i t y. 131