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 the lifetime bin, which keeps accumulating until an operator explicitly clears it, a sudden plateau on an otherwise busy instance is itself a signal — most likely that someone cleared the stats rather than that traffic actually stopped. On a 10 Gbps wholesale handoff port, this might read 23,100 frames over the 122 days since the counters were last cleared, which an admin would cross-check against the matching byte counter to see if average frame size looks normal for that service.