Hello Lachen, tech note indicates 500 series devices is not able to support policing but does perform traffic shaping. Policing is performed to avoid unintentional starvation of the QoS priority queues. All platforms support shaping, which is at the egress interface only. In PA-200/500 and PA-2000 Series devices, Shaping is performed in software only. However, in PA-4000/5000 Series devices, Shaping is performed in hardware. Qos rules matches exactly what is configured in that rule and apply Qos profile matching the rule exactly like security policies. If we you apply Qos policy for set of users,Qos profile and Qos class matching the rule will be applied only for that users. And if you want you also can enable Qos policy only at certain time range by using the schedule feature. Regards, Jahnavi.
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