Random early detection gateways for congestion avoidance
IEEE/ACM Transactions on Networking (TON)
Explicit allocation of best-effort packet delivery service
IEEE/ACM Transactions on Networking (TON)
The BLUE active queue management algorithms
IEEE/ACM Transactions on Networking (TON)
Modeling wireless links for transport protocols
ACM SIGCOMM Computer Communication Review
Building a controlled delay assured forwarding class in differentiated services networks
Proceedings of the 2006 SIGCOMM workshop on Internet network management
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Active queue management (AQM) algorithms are useful not only for congestion avoidance purposes, but also for the differentiated forwarding of packets, as is done in the DiffServ architecture. It is well known that correctly setting the parameters of an AQM algorithm may prove difficult and error-prone. Besides, many studies have shown that the performance of AQM mechanisms is very sensitive to network conditions. In this paper we present a detailed simulation study of an Adaptive RIO (A-RIO) AQM algorithm which addresses both of these problems. A-RIO, first introduced by Orozco and Ros (2003), draws directly from the original RIO proposal of Clark and Fang (1998) and the Adaptive RED (A-RED) algorithm described by Floyd et al. (2001). Our results, based on ns-2 simulations, illustrate how A-RIO improves over RIO in terms of stabilizing the queue occupation (and, hence, queuing delay), while maintaining a high throughput and a good protection of high-priority packets; A-RIO could then be used for building controlled-delay, AF-based services. These results also provide some engineering rules that may be applied to improve the behaviour of the classical, non-adaptive RIO.