Route selection apparatus and method of route selection for multi-service recovery

摘要

An apparatus for re-routing multiple traffic in an optical network of automatic switching, ASON, characterized in that the apparatus comprises: a calculating unit path and a unit intake path traffic, the calculation unit path is configured : to forward (305), the unit incorporating traffic path, a notification message received route calculation that includes information about a plurality of failed traffic connections; and to forward (308) to the unit intake path traffic, route query request sent by a node header failed connection traffic during a consultation period traffic error; the unit intake path traffic is configured: to receive the notification message path computation forwarded by the calculating unit path for incorporating (306) the plurality of traffic connections failed to obtain, from the calculation unit path, available routes with respect to the plurality of failed traffic connections as incorporated, and store records available routes; and based on the query request received route forwarded by the calculation unit path, to find records to find a corresponding route available, and to return (311), through the calculation unit path, the available route found the head node requesting restoration route, where the unit intake path traffic comprises a storage module, a module restoration path and query module, wherein the storage module is configured to separate from the notification message route calculation, information about all connections of failed traffic and store traffic connections failed in a table hashing function with nodes of origin and destination traffic connections failed as key values; module restoration path is configured to extract key values ​​from the table hashing function, and execute respectively the following processing for each key value: to request the calculation unit path that returns a route available that includes all wavelengths available to assign to each traffic connection failed wavelength, and to fill the available route in a record field of restoration of each connection path failed traffic table hashing function; the query module is configured to search the table hashing function according to the query request route returned by the calculation unit path, and when a corresponding connection failed traffic is to return, through the trajectory calculation unit, an available path corresponding to the failed traffic connection to the corresponding header nodes; unit incorporating traffic path is further configured to incorporate traffic connections failed in at least one group, each traffic connections with the same path group.