Active-fault-alarm based pre-restoration mechanism in MPLS-TP optical network  

作　　者：BAI Hui-feng, LU Yue-ming, JI Yue-feng Key Laboratory of Information Photonics and Optical Communications, Ministry of Education, Beijing University of Posts and Telecommunications, Beijing 100876, China 

出　　处：《The Journal of China Universities of Posts and Telecommunications》2010年第3期97-103,共7页中国邮电高校学报（英文版）

基　　金：supported by the Hi-Tech Research and Development Program of China (2009AA01z255);the National Basic Research Program of China (2007CB310705);the National Natural Science Foundation of China (60772024, 60711140087);SRFDP (200800130001);ISTCP (2006DFA11040) and the PCSIRT of China (IRT0609)

摘　　要：The newly developed multi-protocol label switching transport profile （MPLS-TP） fails to actively alarm the fault in advance when conducting restoration in network, or to avoid the false-alarm when equipped with the active-fault-alarm （AFA） to support carrier-grade reliability. In order to solve this problem, a new AFA based pre-restoration mechanism （AFABPRM） is proposed for MPLS-TP controlled optical network, along with the three levels quality-of-service （QoS） based shortest path first rerouting algorithm （TQ-SPF） in this article. The AFABPRM takes full advantage of the AFA technologies, and can solve the false-alarm problem. Analytical and experimental results suggest the better performances of the new mechanism when compared restoration mechanism with or without AFA function, and show that the AFABPRM can solve the false-alarm problem efficiently.The newly developed multi-protocol label switching transport profile （MPLS-TP） fails to actively alarm the fault in advance when conducting restoration in network, or to avoid the false-alarm when equipped with the active-fault-alarm （AFA） to support carrier-grade reliability. In order to solve this problem, a new AFA based pre-restoration mechanism （AFABPRM） is proposed for MPLS-TP controlled optical network, along with the three levels quality-of-service （QoS） based shortest path first rerouting algorithm （TQ-SPF） in this article. The AFABPRM takes full advantage of the AFA technologies, and can solve the false-alarm problem. Analytical and experimental results suggest the better performances of the new mechanism when compared restoration mechanism with or without AFA function, and show that the AFABPRM can solve the false-alarm problem efficiently.

关 键 词：MPLS-TP RESTORATION AFA 

分 类 号：TN929.1[电子电信—通信与信息系统]