Exposing a Nation-Centric View on the German Internet - A Change in Perspective on AS-Level
Exposing a Nation-Centric View on the German Internet - A Change in Perspective on AS-Level
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DOI：
10.1007/978-3-642-28537-0_20
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发表时间：
2012-03
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影响因子：
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通讯作者：
Matthias Wählisch;T. Schmidt;Markus de Brün;Thomas Häberlen
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文献类型：
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作者：
Matthias Wählisch;T. Schmidt;Markus de Brün;Thomas Häberlen
互联网已经发展成为许多国家的关键基础设施。路由的国家重要性促使我们研究与一个国家相关的AS级子图。在本文中，我们报告的方法和工具链识别和分类的“国家互联网”，并评估详细的结果德国的例子。我们的贡献（a）确定AS是重要的国家，（B）将这些AS分类到功能部门，（c）构建AS路由图的一个国家，以及特定部门的子图，（d）分析关键参与者之间的结构依赖关系。我们的方法表明了检查各个组织持有的各个IP块的重要性，因为与只查看前缀相比，这揭示了25%的利益相关者。我们量化的AS的中心相对于特定部门和通信社区的鲁棒性。我们的研究结果表明，部门组的成员往往避免直接对等，但通过一小部分常见的ISP互连。即使适用于德国在这里，所有的方法都设计得足够一般，适用于大多数国家，以及。
The Internet has matured to a critical infrastructure in many countries. The national importance of routing motivates us to study the AS-level subgraph that is relevant for a country. In this paper, we report on a methodology and tool chain for identifying and classifying a ’national Internet’, and evaluate detailed results for the example of Germany. Our contribution (a) identifies the ASes that are important for the country, (b) classifies these ASes into functional sectors, (c) constructs the AS routing graph of a country as well as subgraphs of specific sectors, and (d) analyzes structural dependencies between key players. Our methods indicate the importance of examining individual IP-blocks held by individual organizations, as this reveals 25% more stakeholders compared to only looking at prefixes. We quantify the centrality of ASes with respect to specific sectors and the robustness of communication communities. Our results show that members of sectoral groups tend to avoid direct peering, but inter-connect via a small set of common ISPs. Even though applied for Germany here, all methods are designed general enough to work for most countries, as well.