Studies On The Management Technology Of IP/WDM Optical Networks Based On Traffic Classification

The optical network that based on WDM techonolgy provides enormouse bandwidth for the increasingly rich network applications and the booming volum of data that need to be transported. IP over WDM optical network is the evolving trend of next generation Optical Internet, which promising better transport efficiency, simplified management and lower operation cost by eliminating the intermedia layers. However, the issues of configuring the network resources dynamicly and providing traffic classification to ensure the QoS requirement of different traffics arise in such two-layer architecture. It is proposed in this dissertation that the management and control module of the network should have the intelligence to differ the data flow of different types of traffic and to provide different transport quality guarantee. Throgh classifying the traffic and adopting different transport policy, the performance demand of network application asked by the user can be met. At the same time, the transport characteristic of the links in physic layer should be taken into account to make the QoS guarantee reasonable and effectively, since transmitte impairment is not negligible anymore in nowdays high speed WDM network.The focus of this dissertation is on the study of the main functionality of IP/WDM node management model. With the comprehensive conclusions drawn from the impairment evaluation model, the network resource dynamic allocation algorithm is redesigned. After analysis the network application performance features from the user's viewpoint and then from the paramenter that measuring the transport quality, a new traffic classification model that considers transmite impairment, delay and block integratively, along with a novel RWA theory is proposed. According this model, GUI-based simulation software is developed, which can implement the simulation of resource dynamic allocation, traffic classification and link impairment calculation. The simulation result shows this model can provide effective QoS guarantee to different types of traffic. The model given in this dissertation shed light on the development of the management and control system for netx generation Optical Internet.