This counter tracks the lower 32 bits of the total number of class-1 packets successfully forwarded by an egress traffic shaper on a port. For high-speed links, a 64-bit counter is split into high and low parts to allow proper counting; a network operator retrieves both values and combines them to get an accurate packet count. This helps monitor quality-of-service (QoS) behavior and identify whether traffic is being shaped or dropped as intended.