/Method for restoring in optical internet using optical burst switching

摘要

PURPOSE: A method for protecting and recovering an error in an OBS(Optical Burst Switch)-based optical Internet is provided to quickly recover the error in the OBS-based optical Internet by recovering the error through a temporary LSP(Link-State Packet) composed for protecting a path level non-protection traffic. CONSTITUTION: After detecting an error, a node instantly generates an informing message, and transmits the informing message to a node which performs a recovery switching. The node, which detects the error, generates a control packet for composing a temporary LSP, using information of a shortcut path reached to a node(OPML) for unifying a traffic, and transmits the generated control packet to the shortcut path, for recovering the error through an original replacing path and the newly composed temporary LSP. After the error is recovered, the temporary LSP composed for protecting a path level non-protection traffic is instantly removed.