Systems for, and methods of, generating a visual representation of a wavelength division multiplexing (WDM) optical network and nodes thereof. In one embodiment, a system for generating a visual representation of multiple nodes of a WDM optical network includes: (1) a connectivity, pass-through and error identifier configured to identify connectivity and any pass-throughs and termination errors with respect to at least some nodes of the WDM optical network and (2) a connectivity, pass-through and error displayer coupled to the connectivity, pass-through and error identifier and configured to generate the visual representation that indicates the connectivity and the any pass-throughs and termination errors.