To obtain an optical network for for dynamically controlling the establishment and the release of an optical path.
An edge switch 3 has a traffic measurement processing part 36 for measuring the traffic 32 of a frame of the Ethernet (R) for each address of a transmitting-side edge switch 3 attached to the frame of the Ethernet (R), and a path control means for comparing the traffic 32 of a measuring procedure with a first threshold, establishing an optical path 5 to a receiving-side edge switch 3 corresponding to the traffic 32 that exceeds the first threshold and comparing the traffic 32 of the measurement procedure with a second threshold and releasing the optical path 5 to the receiving-side edge switch 3 corresponding to the traffic 32 that falls below the second threshold.
KURIMOTO TAKASHI
INOUE ICHIRO
Next Patent: IMAGE-ADJUSTING DEVICE AND IMAGE DISPLAY SYSTEM