CAREER: Adaptive Reliable and Self-Managed Networks

职业：自适应可靠和自我管理网络

• 批准号: 0448287
• 负责人: Dina Katabi
• 金额: $ 40万
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2005
• 资助国家: 美国
• 起止时间: 2005-03-01 至 2011-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0448287&HistoricalAwards=false
• 关键词: CAREER; Adaptive; Reliable; Self; Managed

This project develops protocols that allow a network to use multiple paths to deliver traffic demands between any two points, adaptively balancing the load across these paths. The project studies load balancing in both wired and wireless networks taking into account the characteristics of each environment. The work combines theory with practice providing easy-to-implement solutions that are provably stable. The contributions of this work are multifold. First, the developed protocols allow the ISPs to cope with unanticipated changes in traffic demands. Current traffic engineering mechanisms react only to a subset of anticipated events such as single-link or two-links failures, for which they have pre-computed alternate routes. In contrast, the new protocols rebalance the load in realtime to cope with unanticipated changes in traffic demands caused by outages involving multiple links and routers, major BGP reroutes, or network attacks. Second, this work provides the first implementation of multipath routing in an operational wireless access networks. It improves the network throughput and increases the community understanding of how to build better 802.11 access networks. Finally, the work compares end-system multipath routing using overlays and multi-homed domains, and in-network multipath traffic engineering, and provides valuable insights into the interaction between TCP congestion control and the control loop of adaptive multipath load balancers.

该项目开发的协议允许网络使用多条路径在任意两点之间传递流量需求，自适应地平衡这些路径上的负载。该项目研究有线和无线网络中的负载平衡，同时考虑到每个环境的特点。这项工作将理论与实践相结合，提供了易于实施的解决方案，这些解决方案可证明是稳定的。这项工作的贡献是多方面的。首先，开发的协议允许ISP科普流量需求的意外变化。当前的流量工程机制仅对诸如单链路或双链路故障的预期事件的子集做出反应，对于这些事件，流量工程机制已经预先计算了替代路由。相比之下，新协议实时重新平衡负载，以科普因涉及多个链路和路由器、主要BGP重路由或网络攻击的中断而导致的流量需求的意外变化。其次，这项工作提供了第一个实现多路径路由在一个可操作的无线接入网络。它提高了网络吞吐量，并增加了社区对如何构建更好的802.11接入网络的理解。最后，工作比较使用覆盖和多宿主域的端系统多路径路由，并在网络中的多路径流量工程，并提供了有价值的见解TCP拥塞控制和自适应多路径负载均衡器的控制回路之间的相互作用。