面向SDN和NFV融合机制的标准化业务链平台研究

Standardized Service Chain Platform Toward the Integration of SDN and NFV

业务链作为软件定义网络(SDN)和网络功能虚拟化(NFV)的创新业务模式,近年来已成为学术界和工业界的研究热点. SDN和NFV通过水平分层增强厂商采购时的议价能力,使网络功能无需依赖专有的硬件设备,进而能够实现新业务的即时部署.本文首先分析了传统业务链平台存在的问题,然后通过引入SDN和NFV的融合机制,基于MANO架构设计了一种标准化的业务链平台.基于此架构,对控制平面和数据转发平面进行了全新设计,提出了基于多控制器的控制平面和基于源MAC的数据转发平面,从而彻底解决了控制平面的可靠性问题以及数据平面的可扩展性问题.最后,对该业务链平台进行了功能和性能验证,结果证明了该方案的可行性.

Service chain is an innovative model toward the integration of Software Defined Network( SDN) and Network Function Virtualization( NFV),which has become a hot research topic in academia and industry in recent years. SDN and NFV can enhance the bargaining power of vendors and make network equipment no longer rely on proprietary hardware,thus realize rapid development and deployment of new services. First,the paper analyzes the problems existing in the traditional service chain platform,and then designs a standardized service chain platform based on MANO architecture by introducing SDN and NFV. Based on this platform,the control plane and data forwarding plane are re-designed,based on multi-controller model and the source MAC mechanism,and thus the reliability of control plane and the extensibility of data plane are thoroughly solved. Finally,the function and performance of the service chain platform is verified,and the result proves the feasibility of the solution.