AQM stands for Active Queue Management. It is a technique used in computer networking to manage packet queues within network routers or switches. AQM aims to minimize network congestion and improve the overall performance and quality of service (QoS) for data transmission.
At its core, AQM helps regulate the flow of incoming and outgoing packets by actively monitoring and managing the buffer queues at the network nodes. By dynamically controlling the length of the buffer, AQM prevents queues from becoming excessively long, which can lead to increased latency and packet losses.
A key feature of AQM is its ability to actively monitor the network traffic and adjust parameters such as packet drop policies, queue thresholds, and marking schemes in real-time. This mechanism allows AQM algorithms to react quickly to changing network conditions, ensuring that it maintains optimal queue lengths and minimizes congestion.
Several popular AQM algorithms exist, including Random Early Detection (RED), Random Early Congestion Notification (ECN), and CoDel (Controlled Delay). These algorithms employ different strategies to estimate congestion levels and proactively manage packet queues.
AQM has become an essential component of modern networking protocols and is widely implemented in routers, switches, and other network equipment. By preventing excessive congestion, AQM helps to deliver a smoother and more reliable network experience, reducing delays and improving QoS for real-time applications such as video conferencing, online gaming, and VoIP.
