Connectivity Guide

2 Create a QoS type policy-map to color the trac ow.
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 elds
You can modify the value of CoS or DSCP elds.
1 Create a QoS type class-map to match a trac ow.
OS10(config)# class-map cmap-dscp-3
OS10(config-cmap-qos)# match ip dscp 3
2 Modify the policy-map to update the DSCP eld.
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 trac
You can shape the rate of egress trac. When you enable rate shaping, the system buers all trac exceeding the specied rate until the
buer memory is exhausted. Rate shaping uses all buers reserved for an interface or queue and shares buer memory, until it reaches the
congured threshold.
Congure trac shaping
1 Enter the queuing type policy-map and congure 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. A maximum of 32 characters.
class class-name
3 (Optional) Congure rate shaping on a specic queue by matching the corresponding qos-group in the class-map. If you do not
congure 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
Bandwidth allocation
You can allocate relative bandwidth to limit large ows and prioritize smaller ows. Allocate the relative amount of bandwidth to nonpriority
queues when priorities queues are consuming maximum link bandwidth.
Schedule each egress queue of an interface per Weighted Decit Round Robin (WDRR) or by strict-priority (SP), which are mutually
exclusive. If the bandwidth percent command is present, you cannot congure the priority command.
In S5148F-ON, bandwidth weight is equally applied to UC and MC.
1 Create a queuing type class-map and congure a name for the class-map in CONFIGURATION mode.
class-map type queuing class-map-name
2 Apply the match criteria for the QoS group in CLASS-MAP mode.
qos-group queue-number
3 Return to CONFIGURATION mode.
exit
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Quality of service