This counter reports the octets dropped from this queue by the WRED (Weighted Random Early Detection) algorithm, a proactive congestion-avoidance mechanism that discards some traffic before the queue actually fills up. It applies to a transmit queue on an interface where QoS queuing is enabled. It is the 64-bit version of eriRouterQosIfQueueWredDroppedOctets, used on high-traffic interface queues where a 32-bit counter could wrap between polls. Discontinuities in the value can occur when the management system re-initializes, so a sudden reset does not necessarily mean the underlying activity stopped.