System and method of implementing transition from IPv4 (Internet Protocol Version4) to IPv6 (Internet Protocol Version6) based on SDN (Software Defined Network)

Abstract

The invention discloses a system and a method of implementing a transition from an IPv4 (Internet Protocol Version4) to an IPv6 (Internet Protocol Version6) based on an SDN (Software Defined Network), relating to the field of SDNs. Hardware of the system comprises a controller and a switch, software modules of the system are all developed on an application layer of a linux operating system, and the controller comprises a first OpenFlow interface module, a first configuration management module, a first flow table management module and a first address management module; the switch comprises a second OpenFlow interface module, a second configuration management module, a second flow table management module, a second address management module, a tunnel module and a network address translation NAT module. The system and the method have the advantages of capabilities of setting a technology of carrying out the transition from the IPv4 to the IPv6 on the switch flexibly and simply, implementing flexible control of network flow and supporting the conventional switch, convenience for extension, good portability and easiness in redevelopment.

Description

technical field [0001] The present invention relates to the field of SDN, in particular to a system and method for realizing transition from IPv4 to IPv6 based on SDN. Background technique [0002] The network has experienced decades of development, and now it plays a huge role in people's production and life. The global network topology is intricate and composed of many self-made systems. A data packet is sent from a PC (Personal Computer) in China to access a host computer in the United States. It needs to go through a series of routing and forwarding, and the network topology nodes passed through are dominated by layer-by-layer gateways and routers, which is difficult to control. Some organizations, when setting up their own scalable and large-scale network environment, also encounter the problem of complex topology and difficult maintenance. [0003] If the physical topology of the network can be separated, the network resources can be virtualized, the complexity of th...

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Problems solved by technology

[0006] At present, the pure SDN technology has been realized, and the pure IPv4-to-IPv6 transition technology can also be realized, but at this stage, the IPv4-to-IPv6 transition technology has not been realized in the SDN environment

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