A ready to assemble cabinet includes a first panel that has a first side that corresponds to a base panel and a second panel that has a second panel that corresponds to the second side of that base panel. The two additions are separated by a stage for shearing the fibrous suspension. Also included is a method comprising obtaining a wavelength assignment information comprising a wavelength set, a supplemental wavelength assignment information, a wavelength assignment method selection, a traffic parameter, or combinations thereof, and forwarding the wavelength assignment information along a path.