In this illustration, a blue data packet labeled "Packets" moves rightward along a horizontal line. The packet first reaches a box labeled "Classifier." A gray arrow points upwards to the right from the classifier to an oval labeled "Meter." Associated with the meter is the clock icon, which represents metering and policing.

To the right of the classifier is a box labeled "Marker." A gray arrow points downward from the meter to the marker. To the right of the marker is a box labeled "Shaper/Dropper." A gray arrow points downward to the right from the meter to the shaper/dropper. A black arrow labeled "Drop" points downward from the shaper/dropper. Beyond the shaper/dropper, we see the blue data packet, now bearing a black stripe and now labeled "Forward."