Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.3.0 - Page 974

In addition, 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 drops 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 it with a traffic class ID. Rraffic class IDs identify the traffic flow 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 it with a traffic class ID and assign it to 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 Color traffic You can select a traffic flow and mark it with a color. Color the traffic flow based on: • Metering. See Policing traffic. • Default trust. See Trust-based classification. • DSCP, ECN capable traffic (ECT), or non-ECT capable traffic. Color traffic based on DSCP, ECT, or non-ECT 1 Create a QoS type class-map to match the traffic flow. OS10(config)# class-map cmap-dscp-3-ect OS10(config-cmap-qos)# match ip dscp 3 ecn 1 974 Quality of service