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|1. (WO2018103738) ROUTE ESTABLISHMENT METHOD AND DEVICE|
|Title:||ROUTE ESTABLISHMENT METHOD AND DEVICE|
A route establishment method, comprising: in a network topology, determining a shortest ring link which comprises a source node and a destination node; in the shortest ring link, determining two paths from the source node to the destination node; establishing a working route for the source node and the destination node according to one of the paths, and establishing a protection route for the source node and the destination node according to the other path.