Aimed at the new-generation computer network architecture of SDN (Software Defined Network) and network virtualization technology,in order to provide experiments of computer network course with reality and forefront,an experiment teaching platform is proposed and implemented.The Mininet is used as the simulation platform,Floodlight as the controller and OpenVirteX as the virtual layers,a virtualizing network is realized for multiple tenants.The connectivity for hosts in the same virtual network and the isolation for hosts in different virtual network are realized,and the forwarding control separation technology of the SDN is tested through the observtation of flowtable.The experiment teaching platform can help students to deeply understand and master the technology of the SDN and network virtualization.It also reduces the cost of laboratory construction under ensuring the reliability of the experiment,ensuring students' experiment.%为提供具有前沿性和真实性的计算机网络课程实验,针对新一代计算机网络架构SDN(软件定义网络)和网络虚拟化技术,提出并实现了以Mininet为仿真平台,以Floodlight为控制器,以OpenVirteX为网络虚拟化层,可开展多租户的SDN网络虚拟化实验教学方案.验证了同一租户虚拟网络内主机间的连通性和不同租户虚拟网络内主机间的隔离性,并通过流表验证了SDN控制转发分离技术.该方案在保证学生们开展新型SDN网络和OpenFlow协议实验的同时,帮助学生深刻地理解和掌握SDN及网络虚拟化的技术,还在确保实验真实性的前提下大幅度降低实验室建设成本.
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