Abstract
This work discusses the congestion problems that may be caused by video and audio applications. These applications commonly use UDP to convey their data. Unlike TCP,UDP does not have any standard mechanisms for congestion control. Therefore, they might lead to severe congestion that would significantly damage all of the flows in the same traffic class and degrade network utilization. To overcome this problem, we propose the MXQ (MaXimal Queuing) mechanism which represents a new flow-aware forwarding policy. We evaluate this mechanism using UDP video and UDP audio applications. We also evaluate the mechanism using a TCP video application with outputs of hundreds of Mbps. The results show that the dynamic arbitration control realized by the MXQ mechanism can effectively control the congestion and enhance the efficiency of best-effort networks.
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