基于SDN的虚拟网络映射技术的研究与实现

The research and implementation of virtual network mapping based on SDN

基于SDN技术的虚拟租户网络(VTN)能够使得数据中心网络向多个租户提供互相隔离的虚拟网络。VTN提供了VLAN映射、端口映射用于将虚拟网络节点与物理网络节点进行映射。其中VLAN映射需要对每个主机配置VLAN id,增加了映射的复杂性;端口映射时一旦出现交换机端口故障便不能成功映射。为解决上述问题,本文提出了基于MAC地址映射方法 ,即通过主机的MAC地址直接与虚拟节点进行映射。通过搭建Open Daylight实验平台验证了该方法的可行性。结果表明,该方法能够解决以上映射中的不足,简化了VTN网络与底层网络映射配置,提高了VTN的性能。

Virtual tenant network（VTN）based on SDN technology enables data center network provides isolated virtual networks for multiple tenants. VTN provides VLAN mapping and port mapping for virtual network and physical network node mapping. VLAN mapping requires each host configure with VLAN id which increase the complexity of VTN mapping. Port mapping can not work once the switch port is fault. In order to solve the shortcomings of VLAN mapping and port mapping, this paper presents a mapping based on the MAC address of a host. By setting up Open Daylight experimental platform to verify the feasibility of this method, the results show that this method can solve the above mapping deficiencies, simplifies VTN mapping and improves the performance of VTN.