Dell PowerSwitch S4112F-ON OS10 Enterprise Edition User Guide Release 10.4.1.0 - Page 673

1 Create a class-map of type queuing to match queue 5 OS10(config)# class-map type queuing q5 2 Define the queue to match OS10(config-cmap-queuing)# match queue 5 Policing traffic Use policing to limit the rate of ingress traffic flow. The flow can be all the ingress traffic on a port or a particular flow assigned with a traffic class ID. In addition, you can use policing to color the traffic. • When traffic arrives at a rate less than the committed rate, the color is green. • When traffic propagates at an average rate greater than or equal to the committed rate and less than peak-rate, the color is yellow. • When the traffic rate is above the configured peak-rate, the traffic is dropped to guarantee a bandwidth limit for an ingress traffic flow. Peak rate is the maximum rate for traffic arriving or leaving an interface under normal traffic conditions. Peak burst size indicates the maximum size of unused peak bandwidth that is aggregated. This aggregated bandwidth enables brief durations of burst traffic that exceeds the peak rate. Configure Interface rate policing 1 Create a QoS type empty class-map to match all the traffic OS10(config)# class-map cmap-all-traffic 2 Create a QoS type policy-map to define a policer OS10(config)# policy-map interface-policer OS10(config-pmap-qos)# class cmap-all-traffic OS10(config-pmap-c-qos)#police cir 4000 pir 6000 Configure flow rate policing 1 Create a QoS type class-map to match the traffic flow OS10(config)# class-map cmap-cos3 OS10(config-cmap-qos)# match cos 3 2 Create a QoS type policy-map to define a policer and assign a traffic class ID for the CoS flow OS10(config)# policy-map flow-policer OS10(config-pmap-qos)# class cmap-cos3 OS10(config-pmap-c-qos)# set qos-group 3 OS10(config-pmap-c-qos)#police cir 4000 pir 6000 Mark Traffic You can select a flow and mark with a traffic class ID. The traffic flow is identified by the traffic class ID when the traffic reaches egress for queue scheduling. Mark traffic 1 Create a QoS type class-map to match the traffic flow OS10(config)# class-map cmap-cos3 OS10(config-cmap-qos)# match cos 3 2 Create a QoS type policy-map to mark with a traffic class ID and assign it for the CoS flow. OS10(config)# policy-map cos3-TC3 OS10(config-pmap-qos)# class cmap-cos3 OS10(config-pmap-c-qos)# set qos-group 3 Quality of service 673