Implications For Routing and Control Plane Design
Additional state information will be required by the routing algorithm for each type of impairment that has the potential of being limiting for some routes, e.g., DPMD(k), L(k), G(k), nsp(k) and X dB, or in some aggregated fashion.
The specific constraints required in a given situation will depend on the design and engineering of the domain of transparency; for example it will be important to know whether chromatic dispersion has been dealt with on per-link basis, and whether the domain is operating in a linear or nonlinear regime.