Patent ID: 6542473
Filing Date: 2003-04-01
Classification: H04L,H04Q

Abstract:
A method for choosing a route in a hierarchical transmission system that includes a plurality of interconnected nodes, the method comprising the steps of:generating local routing tables, in which routes between nodes on a same hierarchical level are saved; generating global routing tables, in which routes between nodes on a different hierarchical level are saved; and choosing a route between a source node and a destination node, among the plurality of interconnected nodes, from the local and global routing tables in response to a connection request between the source node and the destination node; wherein the global routing table on a first hierarchical level is caused to depend on a local routing table on the first hierarchical level and on at least one global routing table on a second hierarchical level, the second hierarchical level being a lower hierarchical level than the first hierarchical level.