Operation Manual – QoSH3C S7500 Series Ethernet Switches Chapter 1 QoS Configuration1-12QoS Specification Related commandTraffic-based selectiveQinQ Supportedtraffic-remark-vlanid inboundacl-rule [ system-index ]remark-vlan vlan-id1.3 Setting Port PriorityIf a received packet is not VLAN-tagged, the switch will tag the packet with the defaultVLAN tag of the port receiving the packet. In this case, the port priority of the portreceiving the packet is assigned to the 802.1p priority of the VLAN tag of the packet. Inthis case, you can set the port priority.If the received packet is VLAN-tagged, the switch does not perform the operationabove.I. Configuration prerequisitesz The port whose priority is to be configured is specifiedz The priority value of the specified port is specifiedII. Configuration procedureFollow these steps to set port priority:To do… Use the command… RemarksEnter system view system-view —Enter Ethernet portviewinterface interface-typeinterface-number —Set the port priority priority priority-level OptionalBy default, the port priority is 0.III. Configuration example# Set the port priority of Ethernet 2/0/1 to 7. system-view[H3C] interface Ethernet2/0/1[H3C-Ethernet2/0/1] undo priority[H3C-Ethernet2/0/1] priority 71.4 Configuring Priority According to Which a Packet is Putinto an Output QueueWhen congestion occurs in the network, queue scheduling is generally adopted tosolve the problem that multiple packets compete for resources.
