This article proposes a new fault location mechanism in optical network. In this mechanism, a network alarm packet format with time-stamp is introduced to implement fast restoration. In locating the fault, the existing schemes are usually complex and inaccessible when solving the multifailure location problem. For multifailures, the proposed mechanism using time-stamps is more efficient in locating the fault and decreasing computational complexity.
ZHENG Yan-lei ,HUANG Shan-guo,ZHANG Xian,GU Wan-yi School of Telecommunication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China
