基于VxLAN和SDN 的电子政务云

电子政务云属于大规模私有云，其整体架构可采用软件定义数据中心（SDDC）架构。围绕软件定义网络的问题，本文介绍了电子政务云的主要特征以及对于网络提出的挑战，提出基于VxLAN和SDN的网络解决思路；针对电子政务云的特点，提出了网络Overlay 的具体组网方案，并对其优点进行了总结；最后，本文提出了SDN控制器与异构云管理平台的对接方案，并以Openstack为例，描述了SDN控制器与云管理平台的配置流程。

An E-government Cloud Based on VxLAN and SDN

E-government cloud is a kind of big scale private cloud data center. It takes the SDDC as the architecture. For the softwaredefined network, this paper firstly introduces the main characters of the e-government cloud and the challenges of the network,and then offers a solution based on VxLAN and SDN. It also gives a network overlay solution for the e-government cloud, and summarizesits advantages. It provides a scheme to connect the SDN controller to the heterogeneous cloud management platform. Atlast, taking Openstack as an example, the configuration process of SDN controller and cloud management platform are described.