Method for creating routing information in an ATM communications network

The relay nodes of communication network from the front rubber area networks, and made of transformer. In a source relay node is connected at least one of the partial area networks and the partial network networkings layout information. The source region relay node exists is arranged on the communication connection with the environment of claim. Are to satisfy the communication environment in aggregate of the layout information, the partial amount of relay node and connection, and extracts to the volume of relay node device. Integrated a routing in, wherein at least one to the target node's the time of a rubber network from the source of relay node, and returning to the partial network the continuation trend. Then forming the routing information from the routing device extracts.