Josep Batalle, J. Riera, E. Escalona, J. A. G. Espín
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引用次数: 75
摘要
网络功能虚拟化(Network Function Virtualization, NFV)是运营商提出的一种方案,旨在提供网络服务,并在软件中实现网络功能,这些功能可以位于数据中心、网络节点甚至虚拟机中。NFV理论上适用于任何网络功能,旨在简化异构硬件平台的管理。本文以网络路由器提供的一种网络功能为基础,以虚拟化的方式介绍了路由功能的分析、设计和第一个实现。考虑到当前IPv4和IPv6共存以及启用openflow的基础设施带来的可能性,本文描述了虚拟化路由协议的设计,实现了简单的管理并避免了控制平面级别的信令消息开销,并考虑了验证虚拟化功能的不同场景。从本质上讲,手稿描述了功能性NFV概念的第一个实现之一,通过OpenFlow网络上的路由功能虚拟化。本文中验证的不同场景用于演示nfv支持的实现在实际生产环境中的适用性。
On the Implementation of NFV over an OpenFlow Infrastructure: Routing Function Virtualization
Network Function Virtualization (NFV) has emerged as an operator proposal for offering network services with network functions implemented in software, which may be located in Data Centers, network nodes or even in a virtual machine. NFV is theoretically applicable to any network function and aims at simplifying the management of heterogeneous hardware platforms. Using as a basis one of the network functions offered by network routers, this article presents the analysis, design, and the first implementation, in a virtualized manner, of the routing function. Considering the current co-existence of IPv4 and IPv6 and the possibilities brought into the arena by OpenFlow-enabled infrastructures, the article describes the design of the virtualized routing protocol, enabling a simple management and avoiding signaling messages overhead in the control plane level, and the different scenarios considered to validate the virtualized function. In essence, the manuscript describes one of the first implementations of the functional NFV concept, through the virtualization of the routing function over an OpenFlow network. The different scenarios validated in the article are used to demonstrate the applicability of the NFV-powered implementation proposed into actual production environments.