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OSRP (Optical Signaling & Routing Protocol)

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OSRP is an optical routing protocol similar to PNNI (Private Network-to-Network Interface) and MPLS (Multiprotocol Label Switching), which was developed for ATM networks. Through OSRP, switches can exchange information about the network and the status of switches and links. OSRP works in an environment of switches that handles multiple wavelengths of light as circuits, automatically provisioning entire wavelengths or fractions of wavelengths available on a fast-switched basis. An alternative optical routing protocol is FSPF (Fabric Shortest Path First), which was developed by Brocade.

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