Collaborative Research: NeTS-NBD: Traffic Engineering in an Uncertain World

互联网已经成为现代社会的关键基础设施，承载着许多任务关键型应用的流量。因此，互联网主干网络的效率和可靠性具有重大的社会影响。由于不可预测的网络事件和流量变化而产生的不确定性，以及互联网的竞争性和分散性，是提高互联网的效率、可靠性和可用性的主要挑战。该项目开发了有效和新颖的技术，以在存在不确定性的情况下实现高效和可靠的流量工程。它的研究包括三个主要技术部分：1)COPE：带惩罚包络的共例优化；2)SITE：共生域间流量工程；3)COPE和SITE的集成。它们共同提供了一个完整的流量工程解决方案。广泛的影响：这项研究极大地推进了流量工程的最新水平。这些技术和工具包加深了对流量工程的理解，对改进实际IP网络运营具有重要的实用价值。此外，解决不确定性的技术设计背后的一般原则也适用于流量工程以外的领域。

The Internet has become a critical infrastructure of the modern society, carrying the traffic of many mission-critical applications. As a result, the efficiency and reliability of the backbone networks of the Internet have major societal impacts. Uncertainties, which arise due to unpredictable network events and traffic variations, and the competitive, decentralized nature of the Internet, are major challenges to improve the efficiency, reliability, and availability of the Internet.This project develops effective and novel techniques to enable efficient and reliable traffic engineering in the presence of uncertainties. Its research consists of three major technical components: 1) COPE: Common-case Optimization with Penalty Envelope;2) SITE: Symbiotic Inter-domain Traffic Engineering; and 3) Integration of COPE and SITE. Together, they provide a complete traffic engineering solution.Broader Impacts: The research significantly advances the state of the art in traffic engineering. The techniques and toolkit resulted from the research deepens the understanding of traffic engineering and provides significant practical values in improving real IP network operations. In addition, the general principles behind the technical designs for addressing uncertainties have applications beyond traffic engineering.