This read-only PerfCounter64 counts Frames WRED Dropped by this QoS shaper, meaning frames proactively discarded by Weighted Random Early Detection before the queue became completely full. A nonzero count tells an administrator the shaper is preemptively shedding some traffic to avoid a harder tail-drop event, which is generally a sign of congestion management working as intended rather than a failure. For example, seeing cmQosShaperV2StatsFREDD rise slightly while cmQosShaperV2StatsBTD stays at zero suggests WRED is successfully preventing full tail drops during a moderate traffic surge.