Operating method for a computer network comprising a plurality of ports, - wherein a number of production machines connected to some of the ports communicate in each case with at least one virtual user interface assigned to the respective production machine via the computer network, - wherein the production machines furthermore communicate with a higher-ranking facility via the computer network, - wherein the virtual user interfaces and the higher-ranking facility are arranged outside the production machines, - wherein a monitoring component monitors designated ports of the computer network for the connection of a further production machine, - wherein, whenever the monitoring component identifies the connection of the further production machine to any one of the designated ports of the computer network, a commissioning service is activated automatically, - wherein, as a result of the activation, the commissioning service automatically at least -- assigns a virtual user interface to the further production machine, -- re-initialises an individual virtual computer network within the computer network and -- connects the further production machine to the virtual user interface assigned thereto via the re-initialised virtual computer network, so that a communication from the further production machine isolated from other communications taking place via the computer network is implemented with the virtual user interface assigned thereto, - wherein the isolated communication from the further production machine with the virtual user interface assigned thereto is retained until an operator specifies a release command, - wherein, as a result of the specification of the release command, an integration service is activated and - wherein, as a result of the activation, the integration service automatically -- re-initialises at least one virtual router, -- connects the re-initialised virtual router via the re-initialised virtual computer network to the further production machine and -- configures the re-initialised virtual router so that the further production machine communicates with the higher-ranking facility via the re-initialised virtual router. - wherein a number of production machines connected to some of the ports communicate in each case with at least one virtual user interface assigned to the respective production machine via the computer network, - wherein the production machines furthermore communicate with a higher-ranking facility via the computer network, - wherein the virtual user interfaces and the higher-ranking facility are arranged outside the production machines, - wherein a monitoring component monitors designated ports of the computer network for the connection of a further production machine, - wherein, whenever the monitoring component identifies the connection of the further production machine to any one of the designated ports of the computer network, a commissioning service is activated automatically, - wherein, as a result of the activation, the commissioning service automatically at least -- assigns a virtual user interface to the further production machine, -- re-initialises an individual virtual computer network within the computer network and -- connects the further production machine to the virtual user interface assigned thereto via the re-initialised virtual computer network, so that a communication from the further production machine isolated from other communications taking place via the computer network is implemented with the virtual user interface assigned thereto, -- assigns a virtual user interface to the further production machine, -- re-initialises an individual virtual computer network within the computer network and -- connects the further production machine to the virtual user interface assigned thereto via the re-initialised virtual computer network, - wherein the isolated communication from the further production machine with the virtual user interface assigned thereto is retained until an operator specifies a release command, - wherein, as a result of the specification of the release command, an integration service is activated and - wherein, as a result of the activation, the integration service automatically -- re-initialises at least one virtual router, -- connects the re-initialised virtual router via the re-initialised virtual computer network to the further production machine and -- configures the re-initialised virtual router so that the further production machine communicates with the higher-ranking facility via the re-initialised virtual router. -- re-initialises at least one virtual router, -- connects the re-initialised virtual router via the re-initialised virtual computer network to the further production machine and -- configures the re-initialised virtual router so that the further production machine communicates with the higher-ranking facility via the re-initialised virtual router.