A ROUTING DEVICE AND METHOD ORIENTED TO DISTRIBUTED OPTICAL NETWORK OF MULTI-LAYERS AND MULTI-DOMAINS

摘要

A routing device and method oriented to distributed optical network of multi-layers and multi-domains are provided, wherein the device is provided with two more units, which are a whole domain service database and an intra-domain service database, on the foundation of traditional routing modules, and a topology abstract method merged with the service information is used to realize the implementation of the system architecture oriented to service under the distributed optical network of multi-layers and multi-domains. The routing algorithm of service orientation used by the invention is better than the traditional algorithm of destination orientation, and can improve the success rate of the service and the usage rate of the resource. The invention replaces the global optimization of the whole domain routings with the partial optimization of the inter-domain routings, optimizes the routing algorithm, and reduces the complexity of routing calculating. The invention uses the distributed routing algorithm and the parallel signaling, and it is able to greatly reduce the time for setting up links and improve the usability of the network. The invention is used in distributed optical network.