Optical path establishing method for automatically exchanging optical network

Abstract

The present invention belongs to the field of optical communication technology. The method of establishing optical path includes sending out by the first client equipment node the request of establishing optical path; calculating the route in the optical cross-linking equipment node based on the request and transferring the request to the next client equipment node; checking optical resource state by the local network management system; sending out the establishment response by the second client equipment node after receiving the request and transmitting the inforamtion to the first client equipment node; and finishing the optical path establishment after the first client equipment node receives the resource distribution confirmation. Capable of establishing optical path fast in case of lacking of network resource, the method of the present invention is suitable for use in the next generation of autoamtic exchange optical network.

Description

technical field [0001] The invention relates to a method for establishing an optical channel in an automatic switching optical network, belonging to the technical field of optical communication. Background technique [0002] Compared with the traditional optical network, the automatically switched optical network (hereinafter referred to as ASON) has the advantages that it can flexibly and dynamically allocate optical bandwidth resources according to business needs; it can realize rapid network restoration and protection; it has stronger operability . It represents the direction of optical network development. [0003] In the public proposal of the International Telecommunication Union, a framework definition is given to the automatic establishment of an optical path, and a basic process is given. The Optical Internet Forum once proposed corresponding methods for the establishment of optical channels, mainly using CR-LDP or RSVP-TE protocols to realize dynamic management o...

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Problems solved by technology

[0010] The purpose of the invention is to overcome the shortcomings of the existing optical network to quickly establish the optical channel protocol, propose a method for establishing the optical channel in the automatic switching optical network, and overcome the long time of the serial method optical channel in the prior art on the one hand. problems, and also overcome the shortcomings of the parallel method, when the network resources are tight, the optical channel can be quickly established

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