Systematic and efficient GMPLS-based recovery mechanism with soft-protection using enhanced LMP  

作　　者：HUANG Shan-guo LI Bin DENG Yu ZHANG Jie GU Wan-yi 

机构地区：[1]Key Laboratory of Optical Communications and Lightwave Technologies, Beijing University of Posts and Telecommunications, Beijing 100876, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2008年第1期106-111,共6页中国邮电高校学报（英文版）

基　　金：the National Natural Science Foundation of China（60372096）;the Program for Century Excellent Talents in University（NCET-05-0112）;the Hi-Tech Research Development Program of China （2006AA01Z244）.

摘　　要：generalized multi-protocol label switching （GMPLS- based） protection and restoration technologies will play significant role in next-generation broadband IP network to ensure the survivability. In this article, a systematic GMPLS-based recovery mechanism is proposed using enhanced link management protocol （LMP）, which can support bidirectional fault notification relay more effectively. The major contributions and propositions in this article involve： 1） Soft-protection configuration for higher resource utilization with optimized routing; 2） Intelligent Shift from protection manner to restoration manner for the reduction of recovery latency; and 3） Toggleable revertive mode to increase restoration flexibility and to reduce loss of stability. Additionally, by leveraging valuable legacy including shared risk link group （SRLG） processing and fast reroute technique, the proposed recovery mechanism achieves higher resource utilization, fast and robust operation, satisfactory stability and flexibility, and is convenient in the apphcation over heterogeneous transport networks.generalized multi-protocol label switching （GMPLS- based） protection and restoration technologies will play significant role in next-generation broadband IP network to ensure the survivability. In this article, a systematic GMPLS-based recovery mechanism is proposed using enhanced link management protocol （LMP）, which can support bidirectional fault notification relay more effectively. The major contributions and propositions in this article involve： 1） Soft-protection configuration for higher resource utilization with optimized routing; 2） Intelligent Shift from protection manner to restoration manner for the reduction of recovery latency; and 3） Toggleable revertive mode to increase restoration flexibility and to reduce loss of stability. Additionally, by leveraging valuable legacy including shared risk link group （SRLG） processing and fast reroute technique, the proposed recovery mechanism achieves higher resource utilization, fast and robust operation, satisfactory stability and flexibility, and is convenient in the apphcation over heterogeneous transport networks.

关 键 词：GMPLS LMP soft-protection bi-directional fault notification relay intelligent shift toggleable revertive mode 

分 类 号：TN929.11[电子电信—通信与信息系统]