Quality of Service (QoS)This chapter describes how to use and configure Quality of Service service (QoS) features on the switch.Differentiated service is accomplished by classifying and queuing traffic, and assigning priorities to those queues.Table 71. Dell Networking Operating System (OS) Support for Port-Based, Policy-Based FeaturesFeature DirectionPort-Based QoS Configurations Ingress + EgressSet dot1p Priorities for Incoming Traffic IngressHonor dot1p Priorities on Ingress Traffic IngressConfigure Port-based Rate Policing IngressConfigure Port-based Rate Shaping EgressPolicy-Based QoS Configurations Ingress + EgressClassify Traffic IngressCreate a Layer 3 Class Map IngressSet DSCP Values for Egress Packets Based on Flow IngressCreate a Layer 2 Class Map IngressCreate a QoS Policy Ingress + EgressCreate an Input QoS Policy IngressConfigure Policy-Based Rate Policing IngressSet a DSCP Value for Egress Packets IngressSet a dot1p Value for Egress Packets IngressCreate an Output QoS Policy EgressConfigure Policy-Based Rate Shaping EgressAllocate Bandwidth to the Queue EgressConfigure a Scheduler to Queue EgressSpecify WRED Drop Precedence Egress39Quality of Service (QoS) 695