The present application relates to the next generation information network,
fiber broadband access network,
industrial internet network operation and maintenance, communication network fault diagnosis, digital
information transmission and
digital data processing technology field in the new generation
information technology industry, especially relates to a communication network wiring fault diagnosis method and
system. The method generates and locks the binding relationship between the service link identifier, the link node sequence, the wiring resource version and the reference
fingerprint according to the maintenance batch; the sending
optical power and the receiving
optical power of the two ends of the service link are synchronously collected, and the bidirectional attenuation differential
fingerprint is generated; when the bidirectional attenuation differential
fingerprint and the reference fingerprint corresponding to the current wiring resource version exist matching deviation, the historical wiring resource version is retrieved, and the wiring misconnection diagnosis result is generated when the matching condition is met. The present application can improve the wiring misconnection identification accuracy and reduce the risk of error maintenance state
pollution reference fingerprint.