The Internet is flat: modeling the transition from a transit hierarchy to a peering mesh

A. Dhamdhere, C. Dovrolis
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引用次数: 190

Abstract

Recent measurements and anecdotal evidence indicate that the Internet ecosystem is rapidly evolving from a multi-tier hierarchy built mostly with transit (customer-provider) links to a dense mesh formed with mostly peering links. This transition can have major impact on the global Internet economy as well as on the traffic flow and topological structure of the Internet. In this paper, we study this evolutionary transition with an agent-based network formation model that captures key aspects of the interdomain ecosystem, viz., interdomain traffic flow and routing, provider and peer selection strategies, geographical constraints, and the economics of transit and peering interconnections. The model predicts several substantial differences between the Hierarchical Internet and the Flat Internet in terms of topological structure, path lengths, interdomain traffic flow, and the profitability of transit providers. We also quantify the effect of the three factors driving this evolutionary transition. Finally, we examine a hypothetical scenario in which a large content provider produces more than half of the total Internet traffic.
互联网是扁平的:建模从传输层次到对等网络的转换
最近的测量和轶事证据表明,互联网生态系统正在迅速从一个主要由传输(客户-提供商)链路构建的多层层次结构演变为一个主要由对等链路形成的密集网格。这种转变将对全球互联网经济以及互联网的流量和拓扑结构产生重大影响。在本文中,我们使用基于代理的网络形成模型来研究这种进化转变,该模型捕获了域间生态系统的关键方面,即域间流量和路由,提供商和对等体选择策略,地理约束以及过境和对等互连的经济性。该模型预测了分层互联网和扁平互联网在拓扑结构、路径长度、域间流量和运输提供商盈利能力方面的几个实质性差异。我们还量化了驱动这种进化转变的三个因素的影响。最后,我们研究了一个假设的场景,其中一个大型内容提供商产生了超过一半的总互联网流量。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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