Research of improved mechanisms for virtual router data plane

In order to solve physical nodes virtualization, the industries introduce the system virtualization technology. Through we in-depth research on the shortcomings of virtual routers which implement by the system virtualization technology, we find that competition of I/O resources greatly affect the overall performance of the virtual router. This paper presents an improved mechanism for virtual router data plane. The program adopts rewrite packet header processing mechanism to optimize packet processing path in the virtual router forwarding plane and reduce the I/O resources time occupied by forwarding a message, which thereby reduces the competition of I/O resource among the virtual router data planes. Through the analysis of its performance, the program not only meets the basic principles of virtual routers, but also has much advantages in forwarding the packet rate and resource utilization.