![]() The next diagram illustrates the key differences between the two traffic options. The result of traffic shaping is a smoothed packet output rate. ![]() In contrast to policing, traffic shaping retains excess packets in a queue and then schedules the excess for later transmission over increments of time. The result is an output rate that appears as a saw-tooth with crests and troughs. When the traffic rate reaches the configured maximum rate, excess traffic is dropped (or remarked). Afor more information on token buckets, see What Is a Token Bucket? Policing Versus Shaping Both mechanisms use a token bucket as a traffic meter to measure the packet rate. Both functionally limit the traffic output rate. This document clarifies the functional differences between traffic shaping and policing. If your network is live, ensure that you understand the potential impact of any command. All of the devices used in this document started with a cleared (default) configuration. The information in this document was created from the devices in a specific lab environment. This document is not restricted to specific software and hardware versions. Refer to Cisco Technical Tips Conventions for more information on document conventions. ![]() There are no specific requirements for this document. This document describes the functional differences between traffic shaping and traffic policing both of which limit the output rate. ![]()
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