Research On Key Techniques And Performance Simulation Of MSR/RPR

With the rapid development of Ethernet, SDH and DWDM techniques, the capacity of access and backbone networks has been greatly improved in recent years and the bottleneck of network has gradually transferred to Metropolitan Area Networks (MANs). Therefore, the focus has been put on the technique that can integrate multiple services in the MAN. Based on the project "the simulation of tributary service transport over Multiple Services Ring(MSR) in a MAN and the study of its key techniques", which is funded by the Fiberhome Networks of Wuhan Research Institute of Posts & Telecommunications, this dissertation mainly deals with key techniques of Resilient Packet Ring(RPR) and MSR over RPR, their performance evaluation through simulation and proposals for extending functions of both protocols.On the basic introduction to the principles of RPR/MSR techniques, this dissertation mainly studies the design and implementation of RPR/MSR performance evaluation simulation software in OPNET environment. After that, a detailed study is made on the hybrid services transport performance of RPR and MSR over RPR by changing network configurations. Moreover, some extended functions and improvement suggestions are presented in this dissertation, including the interconnecting mechanism of RPR/MSR multi-rings, the improvement of the tributary protection mechanism in MSR and the scheme of TDM Circuit Emulation (TCE) hybrid tributaries transport. Our work lays a good foundation for the development of RPR/MSR techniques and the practical network operation, therefore it is of academic significance and practical value.