Collaborative Research: FIND: NetSerV - Architecture of a Service-Virtualized Internet

合作研究：FIND：NetServV - 服务虚拟化互联网架构

• 批准号: 0831912
• 负责人: Henning Schulzrinne
• 金额: $ 87.25万
• 依托单位: Columbia University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2009
• 资助国家: 美国
• 起止时间: 2009-01-01 至 2014-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0831912&HistoricalAwards=false
• 关键词: Collaborative; Research; FIND; NetSerV; Architecture

PROJECT SUMMARYDespite or because of the Internet?s great success, it has shown itself to be very resistant again attempts to add new functionality to the network core. This dilemma lead to the recent trend in networking to implement services using overlay networking; overlay networking provides an opportunity for end systems to collaborate with others to achieve enhanced functions without having to modify routers. However, since overlay networks operate at the application layer, they cannot effectively use the resources that are available to network services.To address the limitations of services in the current Internet, this work presents a clean slate Internet architecture, called NetServ, based on the concepts of service virtualization. NetServ strives to break up the functions provided by Internet services and to make these functionalities available as modular building blocks for network services. A building block effectively encapsulates a network resource or function realized by a network node, such as link monitoring data or routing tables, and provides tunable parameters for easy configurability. These building blocks form a foundation for the implementation of full-fledged network services, which can then be used by applications. Furthermore, the new framework handles aspects of service discovery, distribution and management, thereby making new services more readily deployable.This project addresses five major research challenges in the new service architecture: i) the definition of requirements for a service-virtualized Internet architecture, ii) the design of an architectural framework for modular, virtualized services, iii) the identification of an initial set of key building blocks, which together can provide a foundation for common network services, iv) the development of mechanisms and protocols for service discovery and service distribution, and v) the design and implementation of a content distribution service based on the NetServ architecture.The feasibility of the NetServ approach will be demonstrated by building the prototype of a content distribution service. This service will interwork with two other services that are crucial for a variety of applications: a generalized naming service and a network monitoring service. The naming service is capable of naming a variety of network entities (like content, users, services, and devices), while obeying policy constraints. The network monitoring service provides makes network performance data available to applications. Overall, the objective of this work is to develop an architecture that provides an efficient and extensible architecture for core network services, to implement a prototype of the new architecture, design and implement a prototype of a content distribution service to demonstrate the feasibility of NetServ, and to evaluate the new architecture in a simulation environment as well as on a GENI-like test bed.Intellectual Merit: NetServ fully decouples service execution from packet forwarding on a network node. A service only assumes that a node provides packet transport and possibly offers building blocks that can be used to access resources. The new architecture for next-generation Internet services, therefore, provides an efficient and flexible foundation for network services, makes the future Internet highly evolvable, and decouples services from a specific technology.Broader Impact: This work will make the Internet service-centric and enable services to directly utilize network resources as building blocks. NetServ can serve as an excellent container for integrating other ongoing FIND work at other institutions. This project will also contribute to both the graduate and undergraduate experimental and theoretical networking curriculum, and involve under-represented groups within its research efforts.

项目总结尽管或因为互联网？的巨大成功，它已经表明自己是非常抵制再次尝试添加新的功能，以网络核心。这种困境导致最近的趋势，在网络实现服务使用覆盖网络，覆盖网络提供了一个机会，终端系统与其他人合作，以实现增强的功能，而不必修改路由器。然而，由于覆盖网络运行在应用层，因此无法有效地利用网络服务可用的资源。为了解决当前互联网中服务的局限性，本文提出了一种基于服务虚拟化概念的全新互联网架构，称为NetServ。NetServ致力于分解Internet服务提供的功能，并使这些功能作为网络服务的模块化构建块。构建块有效地封装由网络节点实现的网络资源或功能，诸如链路监视数据或路由表，并且提供可调参数以便于配置。这些构建块构成了实现成熟网络服务的基础，然后可以由应用程序使用。此外，新架构处理服务发现、分发和管理方面的问题，从而使新服务更易于部署。本项目解决新服务架构中的五个主要研究挑战：i）定义服务虚拟化互联网架构的需求，ii）设计模块化虚拟化服务的架构框架，iii）识别关键构建块的初始集合，其一起可以为公共网络服务提供基础，iv）开发用于服务发现和服务分发的机制和协议，基于NetServ体系结构的内容分发服务的设计与实现，并通过构建一个内容分发服务的原型来验证NetServ方法的可行性。该服务将与其他两个对各种应用程序至关重要的服务交互工作：通用命名服务和网络监控服务。命名服务能够命名各种网络实体（如内容、用户、服务和设备），同时遵守策略约束。网络监控服务使网络性能数据可供应用程序使用。总的来说，这项工作的目标是开发一个架构，为核心网络服务提供一个有效的和可扩展的架构，实现一个新架构的原型，设计和实现一个内容分发服务的原型，以证明NetServ的可行性，并在仿真环境中以及在类似GENI的测试床上评估新架构。NetServ将服务执行从网络节点上的数据包转发完全分离。服务仅假设节点提供分组传输，并且可能提供可用于访问资源的构建块。因此，下一代互联网服务的新架构为网络服务提供了一个高效、灵活的基础，使未来的互联网具有高度的可演进性，并将服务从特定的技术中分离出来。更广泛的影响：这项工作将使互联网以服务为中心，并使服务能够直接利用网络资源作为构建块。NetServ可以作为一个优秀的容器，用于集成其他机构正在进行的其他FIND工作。该项目还将有助于研究生和本科生的实验和理论网络课程，并在其研究工作中涉及代表性不足的群体。