AMCA: an Active-based Multicast Congestion Avoidance Algorithm

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ISCC '03 Proceedings of the Eighth IEEE International Symposium on Computers and Communications
Year:
2003

Citing 0
Cited 2

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Abstract

Many works have recently addressed the issue of congestioncontrol for multicast communications and the problemis known to be highly complex. Scalability, responsiveness,stability and fairness with TCP are some of the requiredproperties. In this paper, we present a congestionavoidance scheme for bulk data distribution called AMCA(Active-based Multicast Congestion Avoidance algorithm)that tries to meet these properties. We use the active networkingtechnology to perform on a per-section dialogueto probe for available bandwidth along a multicast tree.The solution uses the RTT variations experienced by everybranch to estimate the congestion situation in the multicasttree. The physical multicast tree is also used to appropriatelyaggregate the RTT variations at intermediate nodesbefore they reach the source. Simulations show that AMCAconverges, makes use of the available bandwidth and reactsrapidly to dynamic changes while being TCP-fair.