Trusted path accommodation design apparatus and method

Performing accommodation design wavelength paths and sub λ path in a communication network. Based on the search result of the wavelength paths existing in the logical path of the single-hop, it is accommodated in the optical path when it is capable of accommodating the sub λ path. Further, based on the search result of the wavelength paths existing in the logical path of the multi-hop, where possible accommodate the sub-λ path, to determine the logical path based on the wavelength path, for accommodating the sub-λ path in this wavelength path . Further, the sub-λ explore the physical path to be accommodated a path, if wavelength paths set by the logical path of the single-hop assign free wavelength capable of housing, to accommodate the sub-λ path in this wavelength path. Furthermore, based on the start and end points node pair information for a few minutes redundant path, it determines a route taking into account the overlap and availability of the node management links.