Date Added: Jan 2011
IP networks face bursty traffic and fewer packets are dropped with Active Queue Management (AQM). The link utilization also increases because less TCP global synchronization occurs due to the implementation of the AQM algorithm. The queue management will reduce the delays and jitter seen by flows only when the average queue size is small. Much of the traffic in existing packet networks is highly periodic, either because of periodic sources (e.g., real time speech or video) or a network-bandwidth limited TCP bulk data transfer. AQMs in an IP network with periodic traffic can result in systematic discrimination against some flows. Discrimination can result in a queue oscillation.