摘要
Open Flow是软件定义网络(SDN)的核心协议,能实现网络系统控制与转发的分离,加速网络数据的传输。NFV作为SDN的一种实现思路,是解决媒体数据基于OTT传输的低延迟与可扩展性的可靠手段。本设计首先采用Flow Visor对传输网络进行虚拟网络层的构建,分析了一种满足Qo S需求的采用Open Flow协议与SDN控制器产生Flow-table实现数据快速传输的机制,最后给出一种用于媒体数据快速传输的NFV-SDN框架。实验结果表明提出的NFV-SDN框架能较大程度地缩短流媒体端到端传播的延迟时间,且减少跳点数与服务负载,提升了网络数据传输的流畅性。
Open Flow is the core protocol of software defined network（ SDN）,which can separate the control and forwarding of network system and accelerate the transmission of network data. NFV（ Network Function Virtualization）,as an implementation of SDN,is a reliable method to solve the low latency and scalability of media data transmission based on OTT（ Over the Top）. This paper discusses how to build virtual network layer using Flowvisor for transmission network,analyzing the produce of Flow-table to realize fast data transmission mechanism which meets the Qo S requirements by using the openflow protocol and SDN controller,and proposing an NFV-SDN framework for network transmission. The experimental results show that the proposed NFV-SDN framework can significantly reduce the delay time on media data for efficient living from end to end,reduce the number of hops and service load,and improve the performance of transmission in network.
出处
《东莞理工学院学报》
2016年第3期49-53,共5页
Journal of Dongguan University of Technology
