This read-only Counter64 reports the receive frame rate for this PM instance, sampled per second. A high frames-per-second reading paired with a low bytes-per-second reading points to a flood of small frames — common in a control-plane storm or a DoS-style event — which the byte-rate counter alone would mask; because it is drawn from this instance's running statistics bin, it behaves like a long-running total rather than a rotating window, so admins baseline against it instead of expecting it to reset daily. On EVC 212 (E-LAN) on a metro access ring, a live reading of 100,440 frames/sec spiking well above baseline is what would prompt an admin to check for a broadcast or small-packet flood in real time.