GMPLS-Based Optical Circuit Switch with Neighbor Auto-Discovery Mechanism

We propose an optical circuit switching node architecture with automatic neighbor discovery. It implements a trunk module attached to an all optical switching element, which exchanges test messages with neighbor nodes to identify interface addresses of wavelength links of neighbor nodes. By employing a method called "random connection", we completely avoid manual configuration tasks. By developing an analytical model to evaluate the time to finish identifying the interface addresses, we confirmed that automatic neighbor discovery is performed within tens of second assuming a slot is 100 ms in the switch node with twenty of ports, which requires much less time to configure interface addresses of wavelength link than manual tasks.