NeTS: Small: Parallax -- Leveraging the Perspective of Ten Million Peers

该奖项是根据2009年美国复苏和再投资法案（公法111-5）资助的。互联网的大部分增长发生在当前测量技术和平台无法触及的域中，例如NAT盒和防火墙后面，或公共BGP源未暴露的互联网区域。这项工作的动机是观察到，集体，在大型P2P系统的同行有一个独特的和有价值的角度对网络条件，一个今天的研究人员，运营商和用户有限制或没有访问。P2P系统是访问这些视图的理想工具，是最大的服务之一，覆盖了大部分互联网。作为互联网的被动监视器，不同的P2P系统可以在部分重叠的空间和时间域上提供不同的、互补的网络视图。这项工作的目标是探索重用这种有价值的视图的潜力，研究收集，共享和利用它的技术。工作重点是：识别由这些对等体收集的关于网络状况的有用度量，并评估它们的重用潜力（随着时间的推移和跨多个系统的视角），设计用于维护该信息并使其以分散的方式可被其他大规模分布式系统访问的方法，同时保护参与对等体的隐私，并探索可以从这些信息中受益的潜在应用。访问网络的终端主机视图将有助于理解和描述底层网络，并满足新出现的互联网服务和应用的需求。

This award is funded under the American Recovery and Reinvestment Act of 2009 (Public Law 111-5).Much of the Internet's growth occurs in domains beyond the reach of current measurement techniques and platforms, such as behind NAT boxes and firewalls or in regions of the Internet not exposed by public BGP feeds. This work is motivated by the observation that, collectively, peers in large-scale P2P systems have a unique and valuable perspective on network conditions, one to which today's researchers, operators and users have limited or no access. P2P systems are an ideal vehicle for accessing these views, being among the largest services and covering most of the Internet. As passive monitors of the Internet, different P2P systems can provide different, complementary views of the network, over partially overlapping space and time domains. The goal of this effort is to explore the potential for reusing such valuable view, investigating techniques for gathering, sharing, and exploiting it. The work focuses on: identifying useful metrics regarding network conditions collected by these peers and evaluating their potential for reuse (over time and across multiple systems' perspectives), designing approaches for maintaining this information and making it accessible to other large-scale distributed systems in a decentralized manner while preserving the privacy of the participating peers, and exploring potential applications that could benefit from this information. Access to end-host views of the network will help in the understanding and characterization of the underlying network and address the needs of new emergent Internet services and applications.