Dell PowerSwitch S4128F-ON OS10 Enterprise Edition User Guide Release 10.4.1.0 - Page 674
Color traffic, Modify packet fields, Shaping traffic, traffic, fields
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Color traffic You can select a traffic flow and mark it with a color. You can color the traffic flow based on: • Metering. See Policing traffic. • Default trust. See Trust based classification. • DSCP , ECN capable traffic (ECT), or non-ECT. 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 2 Create a QoS type policy-map to color the traffic flow. OS10(config)# policy-map ect-color OS10(config-pmap-qos)# class cmap-dscp-3-ect OS10(config-pmap-c-qos)# set qos-group 3 OS10(config-pmap-c-qos)# set color yellow Modify packet fields You can modify the value of CoS or DSCP fields. 1 Create a QoS type class-map to match a traffic flow OS10(config)# class-map cmap-dscp-3 OS10(config-cmap-qos)# match ip dscp 3 2 Modify the policy-map to update the DSCP field. OS10(config)# policy-map modify-dscp OS10(config-pmap-qos)# class cmap-dscp-3 OS10(config-pmap-c-qos)# set qos-group 3 OS10(config-pmap-c-qos)# set dscp 10 Shaping traffic You can configure to shape the rate of egress traffic. When you enable rate shaping, the system buffers all traffic exceeding the specified rate till buffer memory is exhausted. The rate shaping mechanism uses all buffers reserved for an interface or queue and then shared buffer memory, till it reaches the configured threshold. Configure traffic shaping 1 Enter the policy-map type as queuing and configure a policy-map name in CONFIGURATION mode. policy-map type queuing policy-map-name 2 Enter a class name to apply to the shape rate in POLICY-MAP-QUEUEING mode-up to 32 characters. class class-name 3 (Optional) If you need rate shaping on a specific queue, match the corresponding qos-group in the class-map. If you do not configure the match qos-group command, rate shaping applies to all queues. match qos-group queue-number 4 Enter a minimum and maximum shape rate value in POLICY-MAP-QUEUEING-CLASS mode. shape {min {kbps | mbps}min-value} {max {kbps | mbps}max-value} • 0 to 40000000-kilobits per second kilobits per second-kbps • 0 to 40000 - megabits per second-mbps 674 Quality of service