Ciena Corporation
Systems and methods for achieving best effort home route capacity on protection paths during optical restoration

Abstract:

Systems and methods of optical restoration include, in an optical network with a photonic service operating between two nodes via an associated optical modem at each node, wherein each modem is capable of supporting variable capacity, C.sub.1, C.sub.2, . . . , C.sub.N where C.sub.1>C.sub.2> . . . >C.sub.N, detecting a fault on a home route of the photonic service while the photonic service operates at a home route capacity C.sub.H, C.sub.H is one of C.sub.1, C.sub.2, . . . , C.sub.N-1; downshifting the photonic service to a restoration route capacity C.sub.R, C.sub.R is one of C.sub.2, C.sub.2 . . . , C.sub.N and C.sub.R<C.sub.H; switching the photonic service from the home route to a restoration route while the photonic service operates at a restoration route capacity C.sub.R; and monitoring the photonic service during operation on the restoration route at the restoration route capacity C.sub.R for an upshift.