CLASS
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enter Policy Map Class configuration mode. And finally, use the set 
and police commands to specify the match criteria, where the:
- set command classifies the service that an IP packet will receive.
- police command defines the maximum throughput, burst rate, 
and the action that results from a policy violation.
• You can configure up to 16 rules per Class Map. You can also include 
multiple classes in a Policy Map.
Example 
This example creates a policy called “rd_policy,” uses the class command 
to specify the previously defined “rd_class,” uses the set command to 
classify the service that incoming packets will receive, and then uses the 
police command to limit the average bandwidth to 100,000 Kbps, the 
burst rate to 1522 bytes, and configure the response to drop any violating 
packets.
Console(config)#policy-map rd_policy
Console(config-pmap)#class rd_class
Console(config-pmap-c)#set ip dscp 3
Console(config-pmap-c)#police 100000 1522 exceed-action drop
Console(config-pmap-c)#