TP-Link T2500-28TCTL-SL5428E T2500-28TCUN V1 CLI Reference Guide - Page 183

T2500-28TC JetStream L2 Managed Switch CLI Guide qos queue cos-map Description The qos queue cos-map command is used to configure the mapping relation between IEEE 802.1P priority tag/IEEE 802.1Q tag, CoS value and the TC egress queue. To return to the default configuration, please use no qos queue cos-map command. When 802.1P Priority is enabled, the packets with 802.1Q tag are mapped to different priority levels based on 802.1P priority mode. The untagged packets are mapped based on port priority mode. Syntax qos queue cos-map tag/cos-id tc-id no qos queue cos-map Parameter tag/cos-id -- The 8 priority levels defined by IEEE 802.1P or the priority level the packets with tag are mapped to, which ranges from CoS 0 to CoS 7. tc-id -- The egress queue the packets with tag are mapped to. It ranges from 0 to 3, which represents TC0, TC1, TC2, TC3 respectively. Command Mode Global Configuration Mode User Guidelines 1. By default, the mapping relation between tag/cos and the egress queue is: 0-TC0, 1-TC0, 2-TC1, 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. Example Map CoS 5 to TC 2.: T2500-28TC(config)#qos queue cos-map 5 2 qos queue dscp-map Description The qos queue dscp-map command is used to configure the mapping relation between DSCP Priority and the TC egress queue. To return to the default configuration, please use no qos queue dscp-map command. DSCP (DiffServ Code Point) is a new definition to IP ToS field given by IEEE. This field is used to 166