Abstract: The present invention relates to a node of an optical network, methods and service edge hub devices attachable to an optical network carrying data traffic comprising data information on a number of optical wavelength channels in one or more optical fibres. said hub device comprising one or more optical ports connectable to one or more service equipment arrangements for digital processing the received data information, the hub comprising a wavelength switching means configured to connect each channel to the ports, wherein the wavelength switching means comprises an optical splitter arrangement for spreading and directing the channels to the different ports, in one direction, and network ports, in the other direction.