Combined with authenticity of traditional test bed technology and the scale of network simulation technology

fusion of virtual and physical networks emulation technology is becoming the mainstream technology of current network reappearance research

but lacking of the whole consideration of the flexibility of link simulation

there are still many deficiencies in the actual emulation effect

so arbitrary and flexible emulation method to access virtual and physical networks is proposed. Analyze on access end device and emulation platform in the framework of fused virtual and real networks emulation system

and focus on description of key technology and function implementation. With flexible interface

the access device can be arbitrarily and flexibly connected to the network

so the arbitrary switching of communication between different links can be realized. An experiment of virtual and real network topology is constructed

and the ping command experiment and web application between different links are respectively implemented

according to the experimental results and its analysis

the feasibility and validity of the method are proved.