NFV开源技术

doi:10.11959/j.issn.1000-0801.2017105

Abstract

Abstract:

NFV is a core component of the operator network reconstitution,and open source is an important driving force to accelerate the development of NFV.How to use open source technology to promote the application of NFV in telecom network is a major issue faced by operators.NFV open source technology system was surveyed comprehensively according to the NFV reference framework proposed by ETSI,and the background,core technology and development trend of mainstream open source projects of NFVI,VNF and MANO was analyzed.Finally,some critical problems (such as technical bottlenecks,decoupling obstacles and operational difficulties) and corresponding solutions were presented to help operators to make better use of open source technology of NFV.

Key words: network function virtualization, open source, decoupling architecture, network reconstitution

CLC Number:

TP393

Feng WANG,Huiling ZHAO. Open source technology of NFV[J]. Telecommunications Science, 2017, 33(4): 48-55.

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References 8

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方案	优点	缺点
硬件层虚拟化部署VNF	虚拟化技术日益成熟，计算方面的功能和性能接近物理机；虚拟化降低资源管理复杂度，支持按需交付和动态缩放	x86架构虚拟化在网络方面的性能支持欠佳；虚拟机高级操作（例如热迁移），对组网要求较高
操作系统层虚拟化部署VNF	系统部署较便捷，避免硬件虚拟化开销，性能更优；系统的按需交付和动态缩放能力更强；可通过“微服务”加速VNF创新	VNF资源间的隔离性、安全性不如Hypervisor；基于“微服务”的VNF研发部署与现有软件的差别较大
分布式集群部署VNF	与物理机、虚拟机、容器等部署方案相结合，可降低单点压力，提升整体性能	需要分布式中间件协同调度应用与资源，对现有软件架构有挑战；分布式部署组网具有挑战
系统内核实现VNF	在内核中支持虚拟/物理网络功能的按需组网；性能高，能够充分利用系统的软硬件优势	虚拟交换机等比较成熟，但高级网络功能支持方面有待成熟

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Open source technology of NFV

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