Optical path design device, optical path design method, and optical path design program

An optical path design method in which an optical path design device setting an optical path, the optical path design method comprising:

• setting an optical path connecting one fixed node which is a fixed endpoint to a plurality of switching nodes which are endpoints to be switched at different times by the optical path design device;
• calculating a route of an optical path including a route obtained by collecting common routes of a plurality of optical paths, for a route of the optical path for each of the switching nodes connecting the fixed node and each of the switching nodes;
• and
• reserving communication resources used by an optical path whose period of use and wavelength used are designated on the route of the optical path calculated, and opening an optical path that uses a reserved wavelength in a reserved period of use.

A non-transitory computer readable medium storing instructions of an optical path design program that, upon execution by a computer, causes the computer to perform operations of an optical path design device, the operations comprising:

• setting an optical path connecting one fixed node which is a fixed endpoint to a plurality of switching nodes which are endpoints to be switched at different times by the optical path design device;
• calculating a route of an optical path including a route obtained by collecting common routes of a plurality of optical paths, for a route of the optical path for each of the switching nodes connecting the fixed node and each of the switching nodes;
• and
• reserving communication resources used by an optical path whose period of use and wavelength used are designated on the route of the optical path calculated, and opening an optical path that uses a reserved wavelength in a reserved period of use.