An apparatus, comprising: an optical device configured to be optically coupled to a plurality of servers via a plurality of ports of the optical device, after being connected to a port from the plurality of ports of the optical device, each server from the plurality of servers being associated with at least one wavelength from a plurality of wavelengths, based on an identifier of the port from the plurality of ports, wherein each server from the plurality of servers includes a wavelength-tunable optical transceiver , each server from the plurality of servers is configured to detect the port of the optical device upon being connected to the optical device via an optical fiber from a plurality of optical fibers, and each server from the plurality of servers is configured to retrieve at least one wavelength value corresponding to the at least one wavelength from the plurality of wavelengths that is associated with the port of the optical device using the identifier of the port, and to tune the wavelength-tunable optical transceiver to the at least one wavelength value corresponding to the at least one wavelength from the plurality of wavelengths that is associated with the port of the optical device, the optical device configured to be optically coupled to each switch from a plurality of switches within a switch fabric , wherein the optical device, when operative and optically coupled to the plurality of servers and the plurality of switches, is configured to: wavelength demultiplex optical signals received from each switch from the plurality of switches, and send, for each wavelength from the plurality of wavelengths, optical signals for that wavelength to the server from the plurality of servers associated with that wavelength from the plurality of wavelengths. an optical device configured to be optically coupled to a plurality of servers via a plurality of ports of the optical device, after being connected to a port from the plurality of ports of the optical device, each server from the plurality of servers being associated with at least one wavelength from a plurality of wavelengths, based on an identifier of the port from the plurality of ports, wherein each server from the plurality of servers includes a wavelength-tunable optical transceiver , each server from the plurality of servers is configured to detect the port of the optical device upon being connected to the optical device via an optical fiber from a plurality of optical fibers, and each server from the plurality of servers is configured to retrieve at least one wavelength value corresponding to the at least one wavelength from the plurality of wavelengths that is associated with the port of the optical device using the identifier of the port, and to tune the wavelength-tunable optical transceiver to the at least one wavelength value corresponding to the at least one wavelength from the plurality of wavelengths that is associated with the port of the optical device, the optical device configured to be optically coupled to each switch from a plurality of switches within a switch fabric , wherein the optical device, when operative and optically coupled to the plurality of servers and the plurality of switches, is configured to: wavelength demultiplex optical signals received from each switch from the plurality of switches, and send, for each wavelength from the plurality of wavelengths, optical signals for that wavelength to the server from the plurality of servers associated with that wavelength from the plurality of wavelengths. <EOS>