FIELD: radio engineering, communication.
SUBSTANCE: invention relates to communication engineering. The method comprises steps of computing an end-to-end route for a recently added service according to network topology and a wavelength constraint, and assigning a wavelength for the route; computing the performance of each existing service and performance of the recently added service in the network according to physical impairment information collected in the network, wherein the physical impairment information includes a gain reference spectrum of each optical amplifier in the network; and performing impairment check on the performance of each service, and performing route selection for the recently added service according to the result of the impairment check.
EFFECT: faster data transmission.
11 cl, 5 dwg
