Method, system and node device for building wavelength cross connection

• Main Author: ZI XIAOBIN
• Format: Patent
• Language: Chinese; English
• Published: 09.07.2014
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; SELECTING

The present invention relates to the network communications field, and specifically discloses a method for establishing a wavelength cross-connection, including: determining, by a first node, a spectrum bandwidth of a wavelength connection, and obtaining a first available center frequency set of a first link according to the spectrum bandwidth; obtaining, by the first node, first available center frequency set information and spectrum bandwidth information, and sending a request message carrying the first available center frequency set information and the spectrum bandwidth information to the neighboring node in the direction from the first node to the second node; and receiving, by the first node, a response message, extracting center frequency information carried in the response message, obtaining a center frequency of the wavelength connection, and establishing a wavelength cross-connection based on a spectrum range determined by the center frequency and the spectrum bandwidth.