Patent ID: 7298704

Claim:
A method of routing, along a path between an ingress node and an egress node in a packet network, packetized data corresponding to a new demand, the method comprising the steps of: (a) generating a graph for the packet network integrating logical and optical layers as nodes and links of the graph, wherein each node of the graph accounts for presence or absence of wavelength conversion within the node; (b) modifying the graph, if necessary, based on the new demand and any previously routed demands; (c) determining a route through the modified graph as the path for the new demand; wherein: for step (a), each wavelength of an optical link between a pair of nodes is modeled with a corresponding wavelength link in the graph, and step (b) further comprises the step of replacing a series of wavelength links corresponding to a portion of a provisioned path between a pair of nodes with a cut-through arc; and (d) providing the determined route to one or more nodes in the packet network to enable the routing of the packetized data along the determined route.