FIA: Collaborative Research: Architecting for Innovation

互联网创新的平台互联网的结构稳定性对促进新的应用程序和网络技术的发展至关重要，因为它为前者提供了建立在其上的稳定基础，并为后者提供了一套固定的要求来支持。然而，近年来，这种架构稳定性已经成为一种负担，因为有哪些领域越来越重要？最值得注意的是对安全性和可用性的支持不足，缺乏足够的隐私、移动性、中间盒和面向数据的功能机制？原始互联网架构的不足之处。互联网的架构缺陷之所以持续存在，不是因为它们在智力上难以解决，而是因为它们超出了渐进式部署的变化的范围。基于这一观察，研究团队采取了与最近的从头设计不同的方法，不是专注于新的固定架构，而是提供一个平台，通过增量部署的更改来实现架构创新，而不会对基础设施造成大规模中断。在本研究项目中，研究团队重点研究了硬件定义的功能？挑战并提出创新的平台？这使网络基础设施能够支持新的架构，而无需更改底层硬件。特别是，这种方法将使转发硬件能够支持广泛的替代设计。此外，为了在当前设计的同时进行更改，硬件也将能够同时支持多种设计。拟议的平台将使用一种新开发的范例，称为软件定义网络(SDN)，目前体现在OpenFlow和NOX项目中。OpenFlow是一个开放的硬件转发接口。NOx是一个开源软件平台，它为网络管理软件提供全局抽象，并将该软件做出的决策传达给各个转发信箱。这一努力将为开放、全面并能满足长期需求的更通用的SDN设计提供坚实的基础。研究小组还将探索和演示SDN方法的适用性，包括针对不同网络使用领域的抽象和编程模型。其中包括企业、广域网、家庭和无线。为了展示拟议平台支持全新网络机制创新的能力，研究团队将在SDN上部署新颖的原型架构。如果成功，拟议的方法将允许使用文献中目前可用的已知方法和设计建议来解决互联网目前的许多问题，因为这些解决方案将可以逐步部署，而不会对底层基础设施造成重大破坏。此外，目前解决互联网？S缺陷的商业努力是脱节的、专有的和为短期需求量身定做的。下一代SDN技术为协调的长期努力提供了坚实的基础，以满足安全、移动性和支持以内容为中心的应用和服务领域的关键需求。更重要的是，建议的方法将允许互联网通过增量部署修改来满足未来的需求，从而减轻网络设计人员预测这些未来需求的负担。

A Platform for Internet InnovationThe architectural stability of the Internet was crucial in fostering the development of new applications and networking technologies by giving the former a stable base upon which to build and giving the latter a fixed set of requirements to support. However, in recent years this architectural stability has become a liability, as there are areas of increasing importance ? most notably inadequate support of security and availability, lack of adequate mechanisms for privacy, mobility, middleboxes, and data-oriented functionality ? where the original Internet architecture falls short. The persistence of the Internet's architectural deficiencies is not because they are intellectually intractable, but because they are beyond the reach of incrementally deployable changes. Based on this observation, the research team takes a different approach than recent clean-slate designs, focusing not on a new fixed architecture but instead on providing a platform to enable architectural innovation through incrementally deployable changes, without massive disruption in the infrastructure. In this research project, the research team focuses on the ?hardware-defined functionality? challenge and proposes a ?platform for innovation? that allows the network infrastructure to support new architectures without changes to the underlying hardware. In particular, this approach will enable forwarding hardware to support a wide range of alternative designs. In addition, so that changes can be introduced alongside the current design, hardware will also be able to support multiple designs simultaneously. The proposed platform will use a newly developed paradigm called Software-Defined Networks (SDN), currently embodied in the OpenFlow and NOX projects. OpenFlow is an open hardware forwarding interface. NOX is an open-source software platform that provides global abstractions to network management software and in turn communicates the decisions made by this software to the individual forwarding boxes. This effort will provide a solid foundation for more general SDN designs that are open, comprehensive and can meet long-term needs. The research team will also explore and demonstrate applicability of the SDN approach including abstractions and programming model for different domains of network use. These include enterprise, WAN, home, and wireless. To demonstrate the ability of the proposed platform to support innovation in radically new network mechanisms, the research team will deploy prototype novel architectures on SDN. If successful, the proposed approach would allow the use of known approaches and design proposals currently available in the literature to address many of the Internet's current problems, as these solutions would be incrementally deployable, without major disruption to the underlying infrastructure. Furthermore, current commercial efforts to address Internet?s deficiencies are disjointed, proprietary, and tailored for short-term needs. The next generation of SDN technology provides a solid basis for coordinated, long-term efforts to address critical needs in areas of security, mobility and support of content-centric application and services. More importantly, the proposed approach would allow the Internet to meet future requirements as they arise through incrementally deployable modifications, relieving network designers of the burden of predicting what these future requirements might be.