An installation is disclosed having a plurality of components which are connected to one another via an Ethernet network, with at least a first of the components having a device for reading data that is intended for that component from a sum frame via a sum frame protocol, as well as a device for reading the sum frame from the data part of an Ethernet MAC frame, with at least one of the components of the installation having a device for embedding the sum frame in the data part of an Ethernet MAC frame, and having a device for transmission of the Ethernet MAC frame via the Ethernet network, and with at least one of the components having a device for insertion of an identifier into the Ethernet MAC frame, which identifier indicates whether the data part of the Ethernet MAC frame contains a sum frame.