Software Service Defined Network: Centralized Network Information Service

Jiafeng Zhu, Weisheng Xie, Li Li, Min Luo, Wu Chou
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引用次数: 7

Abstract

Software-defined networking (SDN) is fast evolving as a new paradigm for next generation data networking. In SDN, controller is a central piece of its networks, which provides a logically centralized control of the network. Different from the previous studies on Northbound APIs and Southbound APIs of SDN, in this paper, we propose a service oriented network architecture for east-west network expansions in SDN. In particular, we present the software service defined network (SSDN), a network infrastructure to support east-west network expansion and network services federation across multiple domains. SSDN is based on a highly extensible service computing framework, which differs from the traditional BGP/PCE based inter-domain approaches. We describe the network software-service layer (NSSL) in SSDN, its use cases, its controller and service backup mechanisms, and the new business opportunities under the context of SSDN. It is shown that the proposed approach enhances the development efficiency, enables controller agility, improves scalability, achieves separate life-cycle management, enables inter- and intra-domain communication between different controllers, and enhances the network resiliency.
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软件服务定义网络:集中式网络信息服务
软件定义网络(SDN)作为下一代数据网络的新范式正在快速发展。在SDN中,控制器是其网络的中心部分,它提供了对网络的逻辑集中控制。与以往对SDN北向api和南向api的研究不同,本文针对SDN的东西网络扩展,提出了一种面向服务的网络架构。特别是,我们提出了软件服务定义网络(SSDN),这是一种支持东西网络扩展和跨多个域的网络服务联合的网络基础设施。SSDN基于一个高度可扩展的业务计算框架,不同于传统的基于BGP/PCE的跨域方法。我们描述了SSDN中的网络软件服务层(NSSL),它的用例,它的控制器和服务备份机制,以及在SSDN背景下的新商机。结果表明,该方法提高了开发效率,提高了控制器的灵活性,提高了可扩展性,实现了独立的生命周期管理,实现了不同控制器之间的域间和域内通信,增强了网络的弹性。
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