The invention relates to a link damage
perception energy efficiency routing method for distinguishing services in an elastic optical network, and belongs to the technical field of
optical fiber communications. The method designs a path weight formula based on load balancing for comprehensively considering the link
frequency spectrum state and the transmission damage, so as to reduce the nonlineardamage among different channels. Based on the path weight formula, an edge-separated maximum weight path is selected for high-quality services; and an edge-separated shortest energy efficiency path isselected for low-quality services. During spectrum allocation, the spectrum is partitioned according to the ratio of the service rate, and a spectrum allocation mode combining first-time hit and
tail-end hit is adopted to reduce the cross-
phase modulation between the services of different transmission rates. At the same time, in order to reduce the probability that existing services are blocked since the current transmission service causes damage to the existing services in the network, an
optical path reconfiguration mechanism of a physical damage blocking service is designed. The link damage
perception energy efficiency routing method for distinguishing the services in the elastic optical network provided by the invention effectively improves the spectrum
resource utilization rate and reduces the bandwidth blocking rate and the service transmission
energy consumption.