| In recent years,science and technology have developed rapidly,and academic research on optical networks has continued to deepen.The development of optical network technology has reached a mature stage.As optical networks become more widely used in life,the explosion of data services continues to grow,optical networks will become more flexible and large,and people have more requirements for the capacity,viability and robustness of the next generation intelligent optical network.The survivability technology of optical networks is a barrier to ensure the normal operation of optical networks and support the smooth transmission of data services.Therefore,research on the survivability of optical networks has always been a core issue in the field of optical networks.At the same time,for a complex optical network carrying many kinds of large-scale services,the comprehensive performance evaluation of the network is an obj ective evaluation of the rationality of the network planning and the efficiency of the service transmission,and is also an effective monitoring of network failures.This paper focuses on the research of optical network survivability,and has completed the following five tasks:(1)Discuss and analyze the basic theoretical knowledge of the conceptual significance,key technology,fault recovery process,protection and recovery algorithm,and multi-layer optical network survivability.(2)The Optical Network Node Rank(ONNR)algorithm is proposed for the faulty node recovery problem in the optical network survivability.This algorithm can give an effective node recovery sequence when the optical network occurs in a large-scale node failure.Recover as many services as possible in the shortest time to reduce the harmful effects of optical network failures.(3)The Optical Network Comprehensive Evaluation(ONCE)algorithm is proposed,which can combine the performance of optical network node capacity,average transmission bandwidth and connection rate to comprehensive performance of optical network.Evaluate and realize the evaluation and monitoring of the network to promote the optimization and improvement of the network.(4)Describe the application of the Optical Network Comprehensive Evaluation algorithm in the optical network performance evaluation system.This software was developed by my classmates and me.The application of the ONCE algorithm in the optical network performance evaluation system has improved the evaluation module of the software.(5)Introduce the characteristics and basic functions of the optical network performance evaluation system.The optical network performance evaluation system is a professional optical network planning software that integrates various functions such as resource management,network planning,performance evaluation,and anti-destruction simulation. |
