This counter tracks ATM cells received with the Cell Loss Priority (CLP) bit set, indicating the sender marked them as lower priority and droppable (integer counter). Network engineers monitor this to understand traffic class distribution and verify that QoS policies are correctly tagging low-priority cells for potential discard under congestion. A value of 12,500 cells marked CLP=1 out of 450,000 total cells means about 2.8% of traffic is flagged as droppable if the network becomes congested.