| 摘要 |
PROBLEM TO BE SOLVED: To provide a network management device capable of more accurately suppressing interference of signals.SOLUTION: A storage section 101 stores network information indicating a transmission wavelength which is a wavelength of a signal used in respective nodes in a network. An input section 102 accepts a registration request indicating an additional wavelength to be registered as the transmission wavelength. A wavelength information calculation section 103 determines whether a specific wavelength as the transmission wavelength, in a state that a difference to the additional wavelength is within a specific wavelength range, is present in the transmission wavelength based on a network information and the registration request. A display section 104 issues a warning if the specific wavelength is present. |
