Method and Device for Active Queue Management Offload

A network device for active queue management offload, comprising:

• a memory configured to store instructions and queue data;
• and
• a traffic offload processor coupled to the memory, and configured to:
• collect hardware resource usage data of the network device periodically;
• determine a congestion alarm threshold based on the collected hardware resource usage data;
• classify a plurality of incoming packets into a first queue as first packets or into a second queue as second packets based on an explicit congestion notification (ECN) field in a header of each incoming packet;
• mark the ECN field in the header of each of the plurality of incoming packets when a current hardware resource usage statistic meets the congestion alarm threshold;
• and
• schedule transmission of the first packets from the first queue and the second packets from the second queue using an aging monitor, wherein the first packets from the first queue are transmitted prior to the second packets from the second queue when a non-served time of the first queue exceeds a predetermined aging interval threshold.