Industrial Ethernet is the successor of the conventional Ethernet, known from the office and is primarily used for data communication in industrial production. There are good reasons for this: It offers a seamless network infrastructure and that in real time. The areas of application are diverse and reach from the field and control level to the MES/ERP level, the Manufacturing Execution System (MES) for order coordination and Enterprise Resource Planning (ERP) for material planning. Industrial Ethernet technology includes a large address space for participants. With IPV6 addressing, networks with practically unlimited numbers of participants can be implemented. Large data volumes can be transmitted simultaneously and at high speeds of up to 40 Gbit/s via copper. This also applies to data communication over long distances: Distances of up to 80 km can be bridged using fiber optic cables. Networks can be easily expanded and segmented via switches and routers.