Operation Manual – QoSH3C S7500 Series Ethernet Switches Chapter 1 QoS Configuration1-30 system-view[H3C] acl number 2000[H3C-acl-basic-2000] rule permit source 10.1.1.1 0.0.0.255[H3C-acl-basic-2000] quit[H3C] interface Ethernet2/0/1[H3C-Ethernet2/0/1] qos[H3C-qoss-Ethernet2/0/1] traffic-bandwidth outbound ip-group 2000 64 128 501.13 Configuring Inbound CARYou can enable/disable the inbound committed access rate (CAR) feature.With the inbound CAR feature enabled, when one ACL rule is applied to multiple ports,the switch regards the ACL rule applied to each port as different, so one ACL ruleoccupies multiple entries after it is applied. If you enable the inbound CAR feature fortraffic matching the same ACL rule on multiple ports, each port can provide theguaranteed bandwidth for the inbound traffic matching the CAR rule.With the inbound CAR feature disabled, when one ACL rule is applied to multiple ports,the switch regards the ACL rule applied to each port as the same, so one ACL ruleoccupies only one entry after it is applied. If you enable the CAR feature for trafficmatching the same ACL rule on multiple ports, the switch will provide the guaranteedbandwidth for all the inbound traffic matching the CAR rule on multiple ports.For example, if you want to allocate 2 M of CAR bandwidth to the inbound trafficmatching ACL rule 0, you can use the traffic-limit command to enable the CAR featureon two ports.z If the inbound CAR feature is enabled, each port guarantees 2 M of bandwidth forits own inbound traffic matching ACL rule 0.z If the inbound CAR feature is disabled, the switch allocates 2 M of bandwidth for allthe inbound traffic matching ACL rule 0 on the two ports.1.13.1 Configuration ProcedureFollow these steps to configure the inbound CAR feature:To do… Use the command… RemarksEnter system view system-view —Enable/Disable theinbound CARfeatureinboundcar { enable |disable }RequiredBy default, the inbound CARfeature is disabled.
