NeTS-NBD: Generating Realistic Network Traffic and Topologies

提高全球计算和通信基础设施的安全性、鲁棒性和性能的主要限制因素之一是难以大规模地使新协议、应用和服务经受现实网络条件。 仿真技术的最新进展使得能够在现有硬件和操作系统上运行未经修改的应用程序。这些应用程序可以准确地服从于由数万个路由器和每秒10兆比特的聚合带宽组成的拓扑的广域通信特性。 鉴于这些进步，进行现实的大规模实验的主要挑战在于模仿什么，而不是如何模仿。社区目前缺乏以下能力：i）生成反映互联网的重要特性的拓扑，ii）用链路容量、时延和丢失率来注释拓扑，以及iii）使给定拓扑服从真实的背景业务水平。该提议的目标是开发用于创建真实的网络拓扑的统一基础设施，和往返时间。 此外，将有可能使各个拓扑链路经受真实的分组到达过程。 更广泛的影响：总的来说，该提案的组成部分有可能影响社区进行受控实验的能力发生质的变化，这些实验准确地反映了当前和未来的各种网络场景。 这种能力将大大加速

One of the primary limiting factors to improving the security, robustness, and performance of the global computation and communication infrastructure is the difficulty of subjecting novel protocols, applications, and services to realistic network conditions, at scale. Recent advancements in emulation technology enable running unmodified applications on stock hardware and operating systems. These applications can be accurately subject to the wide-area communication characteristics of topologies consisting of tens of thousands of routers and 10 Gigabits per second of aggregate bandwidth. Given these advancements, the principal challenge in carrying out realistic large-scale experiments lies in what to emulate rather than how to emulate it. The community currently lacks the ability to: i) generate topologies that reflect important characteristics of the Internet, ii) annotate the topologies with link capacities, latencies, and loss rates, and iii) subject a given topology to realistic levels of background traffic.The goal of this proposal is to develop a unified infrastructure for creating realistic network topologies and to accurately annotate them with appropriate distributions for bandwidths, latencies, and round trip times. Further, it will be possible to subject individual topology links to realistic packet arrival processes. Broader Impact: Taken together, the components of this proposal have the potential to effect a qualitative change in the community's ability to conduct controlled experiments that accurately reflect a variety of both current and future network scenarios. Such ability will then dramatically accelerate the