TCP-Africa: an adaptive and fair rapid increase rule for scalable TCP
TCP-Africa: an adaptive and fair rapid increase rule for scalable TCP
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DOI：
10.1109/infcom.2005.1498463
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发表时间：
2005-03
期刊：
影响因子：
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通讯作者：
R. King;Richard Baraniuk;R. Riedi
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文献类型：
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作者：
R. King;Richard Baraniuk;R. Riedi
Internet上的大容量数据传输通常不能满足端到端的性能期望。目前，“尽力而为”数据流量的默认传输控制协议是TCP，它不能很好地扩展到100 Mbps或更高的长距离网络。在拥塞避免方面，TCP的速度不够快，不能充分利用具有高延迟带宽乘积的路径上的资源。第一次尝试通过增加TCP的侵略性来缓解这个问题，结果显示了普遍存在的标准TCP- reno不公平的缺点，或者在某些情况下，甚至在运行在同一路径上的两个连接之间也是如此。我们提出了一种新的延迟敏感的拥塞避免模式（TCP-Africa），它允许在大型未充分利用的链路中进行可扩展的，积极的行为，但一旦链路被充分利用并且拥塞迫在眉睫，就会退回到更保守的TCP-Reno算法。通过ns2模拟，我们论证了TCP-Africa的安全性、效率和公平性。
High capacity data transfers over the Internet routinely fail to meet end-to-end performance expectations. The default transport control protocol for best effort data traffic is currently TCP, which does not scale well to 100 Mbps and higher networks over long distances. In congestion avoidance, TCP is not swift enough to fully utilize resources over paths with a high delay bandwidth product. First attempts to alleviate this problem by equipping TCP with increased aggressiveness have shown the disadvantage of poor fairness with the ubiquitous standard TCP-Reno, or in some cases, even among two connections running over the same path. We propose a new delay sensitive-congestion avoidance mode (TCP-Africa) that allows for scalable, aggressive behavior in large underutilized links, yet falls back to the more conservative TCP-Reno algorithm once links become well utilized and congestion is imminent. Through ns2 simulations we argue for the safety, efficiency, and fairness of TCP-Africa.