Configuring Priority to Be Used When a Packet Enters an Output Queue 667Configuration example■ Set the port priority of Ethernet 2/0/1 to 7.Configuration procedure: system-view[SW7750] interface Ethernet 2/0/1[SW7750-Ethernet2/0/1] priority 7Configuring Priority toBe Used When aPacket Enters anOutput QueueWhen congestion occurs in the network, queue scheduling is generally adopted tosolve the problem that multiple packets compete for resources.A port of the switch supports eight output queues. The priority of each queue isdifferent, and packets in the queue with higher priority are sent preferentially. Theswitch puts a packet into the corresponding queue according to the DSCPprecedence, IP precedence, 802.1p priority or local precedence of the packet. Themapping relationship between precedence values and queues are shown inTable 533, Table 534, Table 535, and Table 536.Enter Ethernet port view interface interface-typeinterface-number-Set the port priority priority priority-level OptionalBy default, the port priority is0Table 532 Set to use the port priorityOperation Command DescriptionTable 533 The mapping relationship between the 802.1p priority values and queues802.1p priority Queue0 21 02 13 34 45 56 67 7Table 534 The mapping relationship between the local precedence values and queuesLocal precedence Queue0 01 12 23 34 45 56 6
