Operation Manual – QoSH3C S7500 Series Ethernet Switches Chapter 1 QoS Configuration1-1Chapter 1 QoS ConfigurationNote:Type A line processing units (LPUs) include LS81FT48A, LS81FM24A, LS81FS24A,LS81GB8UA, LS81GT8UA, LS81FT48, LS81FM24, LS81FS24, LS81GB8U andLS81GT8U.When performing QoS configuration, go to these sections for information you areinterested in:z Overviewz QoS Supported by the S7500 Series Ethernet Switchesz Setting Port Priorityz Configuring Priority According to Which a Packet is Put into an Output Queuez Configuring Priority Markingz Configuring Rate Limiting on a Portz Configuring TPz Configuring Redirectz Configuring Queue Schedulingz Configuring Congestion Avoidancez Configuring Traffic Statisticsz Configuring Guaranteed Bandwidthz Configuring Inbound CARz Configuring Traffic-Based Selective QinQz QoS Configuration Examples1.1 OverviewQoS (Quality of Service) is a concept generally existing in occasions with servicesupply and demand. It evaluates the ability to meet the need of the customers in service.Generally, the evaluation is not to grade precisely. Its purpose is to analyze theconditions when the service is the best and the conditions when the service still needsimprovement and then to make improvements in the specified aspects.In internet, QoS evaluates the ability of the network to deliver packets. The evaluationon QoS can be based on different aspects because the network provides variousservices. Generally speaking, QoS is the evaluation on the service ability to support thecore requirements such as delay, delay variation and packet loss ratio in the packetdelivery.
