Physical device and virtual network communication method and system based on SDN (Software Defined Network)

Abstract

The invention discloses a physical device and virtual network communication method and system based on an SDN (Software Defined Network). The communication method comprises the following steps that physical device nodes are registered, and virtual node information is synchronized; physical devices which access for the first time are authenticated, thereby enabling the physical devices to access data; a controller issues flow tables to a physical network SDN switch and a virtual network switch and instructs a communication process of the physical devices and virtual machines; the physical devices send request data packets, wherein destination IP addresses and destination MAC addresses are the virtual machines; the physical network SDN switch receives the request data packets from the physical devices, matches the flow tables, packages the request data packets into VXLAN (Virtual Extensible Local Area Network) tunnels and forwards packaged data packets to the virtual network SDN switch corresponding to the virtual machines; and the virtual network SDN switch receives the packaged data packets through utilization of the VXLAN tunnels, matches the flow tables and forwards the request data packets to corresponding interfaces of the virtual machines. According to the method and the system, the physical devices and the virtual machines are located in the same subnetwork, and the access of the physical devices to layer 2 and layer 3 networks through utilization of a virtual network is supported.

Description

technical field [0001] The present invention relates to the computer field, in particular to an SDN-based method and system for communicating between a physical device and a virtual network. Background technique [0002] With the rapid development of virtualization technology, the function of realizing a large number of virtual machines based on physical hosts has been realized, and these virtual machines can be used as physical machines in essence. But currently in the data center, not all services run on virtual machines, so there is a need for physical devices to access virtual networks. [0003] Software-defined network (Softwae Defined Network, SDN) is a rising and popular technology in recent years. The main technical idea is to separate the control plane and the forwarding plane, abstract the distributed control of the original traditional network as the control plane, and use SDN The controller centrally controls the entire network equipment to reduce the complexity...

AI Technical Summary

Problems solved by technology

However, the existing VXLAN technology cannot be directly applied to the virtual devices at the same logical layer and the physical devices in the same subnet, and it is difficult to realize virtualization services to support physical device access

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