More and more attention has been paid to the information security industry, and in this situation, "autonomous control" strategy has become one of the core guidelines for the technology sector of commercial banks. Based on the background of flourish development of the next generation computer network technology, this paper analyzes the network line as a cornerstone of science and technology, and discusses how to build a access layer network which supports the data center, and under the premise of "autonomous control", how to better use the network virtualization technology. In the future, under the trend of the business system by a small machine, and based on the access layer network relying on virtualization technology, this paper discusses that a large number of cluster server groups can achieve safe and reliable method.