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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Path protection ： ウィキペディア英語版 Path protection Path protection in Telecommunications is an end-to-end protection scheme used in connection oriented circuits in different network architectures to protect against inevitable failures on service providers’ network that might affect the services offered to end customers. Any failure occurred at any point along the path of a circuit will cause the end nodes to move/pick the traffic to/from a new route. Other techniques to protect telecommunications networks against failures are: Channel Protection, Link Protection, Segment-Protection, and P-cycle Protection == Path Protection in Ring Based Networks == In Ring Based networks topology where the setup is to form a closed loop among the Add Drop Multiplexers, there is basically one path related ring protection scheme available in Unidirectional Path-Switched Ring〔(Unidirectional Path Switched Ring (UPSR) ).〕 architecture. In SDH networks, the equivalent of UPSR is Sub-Network Connection Protection (SNCP). Note that SNCP does not assume a ring topology, and can also be used in mesh topologies. In UPSR, the data is transmitted in both directions, clock and counter clock wise, at the source ADM. At the destination then, both signals are compared and the best one of the two is selected. If a failure occurs then the destination just needs to switch to the unaffected path. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Path protection」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.