近年来, 越来越多的应用或微服务部署到云端. 虚拟网络是云端部署运行的基本保障. 为了构建面向虚拟机和容器等虚拟实例的虚拟网络, 网卡虚拟化在物理网卡的基础上, 构建虚拟网卡和虚拟网桥等设备, 并对各虚拟设备进行配置和管理. 本文从虚拟网卡和虚拟网桥出发, 调研了网卡虚拟化中目前流行的虚拟技术, 并将这些技术进行了分类和比较, 最后就网卡虚拟化的现状及未来进行了总结和展望.
In recent years, more and more applications or micro services have been deployed to the cloud. The virtual network is the basic guarantee in a cloud environment. Virtual Network Interface Cards (NICs) and virtual network bridges are built based on physical NICs in virtualization of NIC to construct the virtual network for virtual instances such as virtual machines and containers, and these virtual network devices are uniformly configured and managed. From the perspective of the virtual NIC and the virtual network bridge, the current popular virtualization technologies of NICs are sarveyed, classified, and compared in this study. Finally, the current situation and future development in NIC virtualization are analyzed.