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Bandwidth maximization in IP over WDM path networks

The emerging IP over WDM will be a new layer structure with a help of MPLS and OXC. To use WDM's large transmission capacity effectively, we design IP over WDM networks that reconfigure IP routing and lightpaths every day or month. Using integer linear programming, we formulate a problem that maximizes the network throughput; that is, the sum of the bandwidths allocated to an end-to-end node pair. This formulation is applicable to a network that is composed of twenty nodes and eight wavelengths. In such a network, we show maximization level of the network throughput derived from our formulation.