TP-Link T1500-28PCT TL-SL2428P T1500-28PCT V1 CLI Reference Guide - Page 107
qos queue cos-map, qos queue dscp-map
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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 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 0 to 7. tc-id -- The egress queue the packets with tag are mapped to. It ranges from 0 to 3, which represents TC0, TC1, TC2 and TC3 respectively. Command Mode Global Configuration Mode User Guidelines 1. By default, the mapping relation between tag/cos 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 T C0-T C3, the bigger value, the higher p r i o r i t y. Example Map tag 5 to TC 2.: T1500-28PCT(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 divide IP datagram into 64 priorities. When DSCP Priority is enabled, IP 96