Network Management System Based On JAVA And FLASN

Along with the rapid development of communication technology, users requirements of bandwidth become higher and higher. The Ethernet Passive Optical Network (EPON) based on mature Ethernet technology uses point-to-multipoint structure, passive optical transmission, and provides a wide range of business on the Ethernet. It combines the advantages of passive optical network technology and Ethernet technology, has following characteristics: low-cost, compatibility, maturity, easy to maintain, operational flexibility and so on. It becomes one of the best schemes of the next generation broadband access network.The thesis aims at satisfying customer, focuses on implement the best performance and operation of EPON system, and studies and designs the Optical Line Terminal (OLT), including OLT architecture, main service model, Element Management System (EMS) and so on. The contents of the studies of this thesis are as follows:Firstly, this thesis starts from the architecture of EPON, analyzes the working principle and technical features of EPON system, determines the requirements and system layout of OLT. Secondly, according to China Telecom's technical requirements of EPON equipments, this thesis proposes a set of OLT architecture, service model, and the main module is implemented too.Thirdly, according to the analysis of various kinds of network management protocol, software architecture and development tools, this thesis implements a OLT device Element Management System (EMS) of EPON, which uses Browser/Server structure and MVC design pattern. This system is based on Flash, PHP and Java, and includes configuration module, performance module, security module and so on. Clients can access network elements conveniently by using browser. Every module of this system is independent and has a strong portability.