摘要： 针对OpenStack云平台不能准确仿真虚拟链路性能参数的问题,提出高逼真链路仿真方法。通过多粒度虚拟化技术仿真虚拟网络节点,基于软件定义网络构建虚拟网络节点间的虚拟链路。根据虚拟网络节点间通信所处的计算节点位置不同,分别实现宿主机内和跨宿主机间的链路仿真,从而支持虚拟链路中带宽、延时、丢包率性能参数的灵活配置与自动化部署。实验结果表明,该方法能够准确地对虚拟链路性能参数进行仿真,并且提高链路仿真的逼真度。

关键词: 云平台, 网络仿真, 链路仿真, 差分补偿, 自动化部署

Abstract: Aiming at the problem that the performance parameters of the virtual links cannot be emulated accurately in the OpenStack cloud platform,a method of high-fidelity link emulation is proposed.The virtual network nodes are emulated by multi-granularity virtualization technology,and the virtual links between virtual network nodes are constructed based on Software Defined Network(SDN).According to the location of the compute nodes where the virtual network nodes communicate,the intra-host link emulation and the inter-host link emulation are achieved respectively,so that the flexible configuration and automatic deployment of the virtual link performance parameters(bandwidth,delay and packet loss rate) are supported.The experimental results show that the method can accurately emulate the performance parameters of virtual links and improve the fidelity of link emulation.

Key words: cloud platform, network emulation, link emulation, differential compensation, automatic deployment

中图分类号: 

• TP393