Virtual network system, virtual network control method, virtual network function database, integrated control device, control device, control method and control program therefor

摘要

A system according to this invention is directed to a virtual network system that selects a virtual network function of an appropriate version and prevents a malfunction of a virtual network when an operator is to provide a virtual network service based on virtual network functions. The virtual network system includes an instructor that instructs activation or change of a virtual network function preregistered and providing one of functions included in a virtual network service, a confirmation unit that confirms that the virtual network function instructed to be activated or changed is appropriate, based on version information added at a time of registering the virtual network function, and a setting unit that sets, when the confirmation unit confirms that the virtual network function instructed to be activated or changed is appropriate, the instructed virtual network function as the one of the functions included in the virtual network service.