NODE ARCHITECTURE AND MANAGEMENT SYSTEM FOR OPTICAL NETWORKS

摘要

An optical transport switching system having an all-optical switch (200) can be selectively configured to provide cross-connection (240, 245) and add/drop multiplexing (230, 235) functions. In a further aspect, a hierarchical and distibuted control architecture (280, 250, 410) for managing an optical communications network is provided. In further aspect, a Line Card Manager (LCM) (410) and Node Manager (250) architecture are used at an optical communications network, where the node manager (250) manages line cards (420) at the optical switch. In a further aspect, a hierarchical network management system (NMS) (5910) where a plurality of NMS managers (5910), each responsible for different portions or aggregations of a communications network, are logically arranged in atree structure. In a further aspect, a protection switching capability is achieved in an optical communications network having at least one optical switch (5225) connected to a network access device (5140).