This OID stores the high-order 32 bits of a counter that tracks valid frames received and discarded by the forwarding process on a bridge port. Network engineers use this metric to troubleshoot packet loss and identify ports that are filtering or dropping traffic due to congestion or policy rules. For example, a value of 1000 in the Hi field combined with a Lo field value represents part of the total discard count on that port—if your protocol analyzer shows consistently high discard counts, you may have misconfigured QoS policies or insufficient buffer space.