RESERVATION PROTOCOL SIGNALING EXTENTIONS FOR OPTICAL SWITCHED NETWORKS

摘要

Variable (Photonic Burst Switched) time WDM (Wavelength-Division Multiplexed) that the slot is provided PBS schematic of the light path in the network-architecture and method for performing reserved grain is disclosed. This method uses an extension to the RSVP-TE signaling protocol, which uses various messages to reserve resources. Resource reservation request is the resource reservation request is passed between nodes during downstream transmission of the optical path route connecting to the destination node to the source node via one or more switching nodes, each node transmits the resource (that is available for the duration of the next scheduling receives the query as to whether the segment having the optical path). Use the information included in the corresponding label, each lightpath segment made available to the soft request fall. If all the segments of the optical path for the selected route is available, the response message is transmitted to the reservation station at the receiving node to the source node along that route. When receiving the response, the soft reservation is changed to hard reservation in each node.