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Abstract

A high capacity network increases its capacity by adding switching modules at the core side. Network expansion is achieved by incrementally adding one plane of switches to each core node so as to form virtual parallel plane (VPP) networks, one wavelength to each VPP network to achieve full interconnection, and by making corresponding upgrades to WDM equipment at each point-of-presence (POP) switch. An optical distribution unit (ODU) is used to control the connectivity of the VPP networks. The expansion of the network capacity is performed without increasing the number of hops. By using wavelength multiplexing, several VPP networks, and logical traffic distribution, the present invention provides for a wide range of network capacities coverage and allows to dynamically reconfigure the connections to accommodate increased traffic demands.

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First Claim