A study of optical network route selection based on the risk information

摘要

Recently, as IP traffic increases, there has been a growing interest in optical networks that use wavelength multiplexing optical switching and autonomous control protocols. Key issues in the operation of the optical network are the enhancement of wavelength path reliability and the automatic provision of wavelength paths according to the required service grade. This paper discusses a method for extending risk information based on concept of SRLG (Shared Risk Link Groups), and a route selection method for ensuring a required service grade. In conclusion, we propose the possibility of the advanced operation of an autonomously controlled network through risk/cost-prioritized control, which is an extension of risk-avoided route selection technology.