Collaborative Research: NeTS-NBD: An Evolvable Architecture for Next-Generation Internet Services

拟议的研究计划将开发和催化下一代互联网架构的核心组件，该架构将极大地增强互联网面对现代应用需求的功能能力、健壮性、灵活性和异构性。我们的方法有两个相互关联的推动力。第一个问题是解决以下问题：下一代全球网络基础设施的正确架构是什么？因为提出一种从头开始的设计，或将这个问题作为一个思维实验，几乎没有实际影响的机会，第二个推动力是建立研究基础设施，使我们能够发现、评估和部署这种体系结构。具体地说，覆盖网络最近作为一种有前途的技术出现在互联网中，将颠覆性技术引入互联网。这种对覆盖功能的关注留下了一个最关键的问题：它背后隐藏着什么？什么是合适的最小的、普遍共享的环境来覆盖覆盖图？支持日益多样化的覆盖图机会的参考图的核心在于三个关键要素。首先，必须有一些通过覆盖了解底层互联网的信息发现和传播的手段，即所谓的信息平面。其次，将覆盖提升为一流对象特别强调以经济上连贯的、计算实用的方式将复杂的网络资源集合(例如，带宽、存储、计算周期、共享信息)协调分配给竞争覆盖。这需要一个资源分配的经济框架。第三，还有一个相辅相成的问题，即如何界定资源的基本单位，以及通过虚拟手段执行资源分配决策方面的挑战。这些要素结合在一起，形成了覆盖的操作环境的关键核心；覆盖功能世界所必需的通用子结构。这三个要素在这个研究计划中起着关键作用：它们既是一个关键目标(输出)，同时也是建立一个可扩展的广域试验台的关键，使研究人员能够在现实世界条件下评估新想法。

The proposed research program will develop and catalyze the core component of a next-generation Internet architecture that greatly increases the functional capabilities, robustness, flexibility, and heterogeneity of the Internet in the face of modern application requirements.Our approach has two inter-related thrusts. The first is to address the following question: What is the right architecture for the next generation of global networking infrastructure? Because proposing a clean-slate design, or treating this question as a thought experiment, has little chance of practical impact, the second thrust is to build the research infrastructure that allows us to discover, evaluate and deploy this architecture.Specifically, overlay networks have recently emerged as a promising technique for introducing disruptive technology into the Internet. This focus on overlay functionality has left unanswered the single most critical question: What lies underneath? What is the appropriate minimal, universally shared environment to underlay the overlays?The core of an underlay that supports an increasing multiplicity of overlay opportunities lies in three key elements. First, there must be some means of information discovery and dissemination through with overlays learn about the underlying Internet; a so-called Information Plane. Second, elevating overlays to first-class objects places special emphasis on the coordinated assignment of complex collections of network resources (e.g., bandwidth, storage, computational cycles, shared information) to competing overlays in an economically coherent, computationally practical fashion. This requires an Economic Framework for resource allocation. Third, there is a complementary question of how to define the basic unit of resource, and the challenges in the implementation of decisions made in resource allocation by means of Virtualization. Combined, these elements form the critical core of an operating environment for overlays; the necessary universal substructure for an overlay-enabled world. These three elements play a pivotal role in this research program: they are both a key objective (output), and at the same time, essential for building a scalable wide-area testbed that allows researchers to evaluate new ideas under real-world conditions.