This read-only Counter64 is the frame-level counterpart of the Yellow-bytes counter — frames received on this PM instance and remarked yellow for exceeding the committed rate. Admins watch the frame count alongside the byte count because a policer can yellow-mark a large number of small frames without moving much byte volume, something the byte counter alone would understate; because it is drawn from this table's currently-accumulating, short-interval bin, it reflects only the last few minutes of activity, so it's the value to watch for a fast-forming problem rather than a long-term trend. On a 1 Gbps UNI feeding a business Ethernet Private Line, this might read 5,020,000 frames over the last 15 minutes, which an admin would cross-check against the matching byte counter to see if average frame size looks normal for that service.