A METHOD FOR AUTOMATICALLY SWITCHED OPTICAL NETWORK HIERARCHY ROUTING CALCULATING AND CONNECTION ESTABLISHING

摘要

A method for automatically switched optical network hierarchy routing calculating and connection establishing, comprises the steps: a), configures each routing area of the optical network and its speaker, forms hierarchy topological relation that can calculate routing by the interaction between the various hierarchies and broadcasting within the routing areas; b) after the entrance network element receives the connection establishing request, sends it to the entrance connection controller CC1 of the routing area RA1;c) each routing area which receives the connection request searches the routing in the routing area by the entrance connection controller, and originates connection establishing, if it is bottom hierarchy routing area, completes the establishment of the optical mark channel in the routing area, proceeds step e), or else, proceeds step d);d) each node connection controller on the routing in the area sends sub network connection establishing request to the corresponding connection controller of the next hierarchy routing area speaker, returns to step c); e) each routing area returns the connection establishing result hierarchy and hierarchy to the entrance network element. The method of the invention makes the signaling interaction process of the routing calculating and the connection establishing hierarchically and consecutively, and is beneficial to complete the connection establishing rapidly.