NeTS: Small: Collaborative Research: Towards Principled Network Troubleshooting via Efficient Packet Stream Processing

NetS：小型：协作研究：通过高效的数据包流处理实现有原则的网络故障排除

• 批准号: 1218092
• 负责人: Jun Xu
• 金额: $ 30.6万
• 依托单位: Georgia Tech Research Corporation
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2012
• 资助国家: 美国
• 起止时间: 2012-08-01 至 2016-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1218092&HistoricalAwards=false
• 关键词: NeTS; Small; Collaborative; Research; Towards

Troubleshooting undesirable network events, such as poor connectivity or performance, is difficult at best. The high-speed link techniques that work on LANs, such as dumping packets and analyzing the detailed traffic, are impossible due to massive data volume. This project will explore mathematical techniques and network tools that will reduce the amount of data that has to be captured and stored while still allowing network operators to troubleshoot their networks. The project's objective is to extract from high-speed packet streams on individual network links an approximate and highly compressed representation of the link traffic that is orders of magnitude smaller in size than the raw traffic stream but which permits almost the same degree of troubleshooting as the raw data. The project will develop the algorithms and mathematical theory needed to design intelligent sampling algorithms for compressing network traffic. Specific areas to be studied for purposes of developing sampling techniques include identifying what constitutes the representative flows for troubleshooting purposes and investigating how to best encode and decode the sampled data, and how the samples can be gracefully shrunk over time so as to reclaim space for new data as they arrive.Broader Impact:The project will provide research experience for undergraduates. Undergraduates at Georgia Tech, Denison and other institutions will be recruited via undergraduate workshops and research symposiums. Additionally, the project will integrate education and research via inclusion of the research into courses. In addition to publishing in appropriate scientific venues, the PIs will expand the Wikipedia entries on topics related to data streaming algorithms as part of the process of disseminating general information about the topic area to the scientific community. In terms of commercial impact, the project will lead to better methods for the diagnosis of large-scale networks, thereby reducing the cost to maintain and operate them. As part of the transfer of research findings into commercial practice the PIs will collaborate with members of AT&T's Network Management and Engineering Department.

排除不良网络事件(例如连接不良或性能不佳)充其量也是困难的。在局域网上工作的高速链路技术，如丢弃分组和分析详细的流量，由于数据量大而不可能实现。该项目将探索数学技术和网络工具，以减少必须捕获和存储的数据量，同时仍允许网络运营商对其网络进行故障排除。该项目的目标是从各个网络链路上的高速数据包流中提取链路流量的近似和高度压缩表示，其大小比原始流量流小一个数量级，但允许与原始数据进行几乎相同程度的故障排除。该项目将开发设计用于压缩网络流量的智能采样算法所需的算法和数学理论。为了开发抽样技术，需要研究的具体领域包括确定什么构成故障排除的代表性流程，调查如何最好地对抽样数据进行编码和解码，以及如何随着时间的推移优雅地缩小样本，以便在新数据到达时为其腾出空间。广泛影响：该项目将为本科生提供研究经验。佐治亚理工学院、丹尼森学院和其他机构的本科生将通过本科生研讨会和研究研讨会招聘。此外，该项目将通过将研究纳入课程来整合教育和研究。除了在适当的科学场所出版外，作为向科学界传播关于该主题领域的一般信息的过程的一部分，私营部门还将扩大与数据流算法有关的主题的维基百科条目。在商业影响方面，该项目将带来更好的大规模网络诊断方法，从而降低维护和运营成本。作为将研究成果转化为商业实践的一部分，私人投资机构将与AT&P；T；的网络管理和工程部成员合作。