Abstract:

The hierarchical routing infrastructure in intelligent optical network (ION) is researched. Two algorithms called dynamic hierarchical balancing routing algorithm (DHBR) and dynamic hierarchical routing algorithm based on optimized gateways (DHROG) are proposed in which the resource coordination, the balance for interdomain links and the gateway nodes are considered based on fixed alternate hierarchical routing. Simulation shows that the average block probability of the network can be reduced effectively with acceptable time performance by these algorithms.

Key words: hierarchical Routing, intelligent optical network, inter-domain routing, fixed alternate routing, routing and wavelength assignment