Design And Implementation Of Alarm Module In EPON Network Element Management System

With the development of network technology and equipment, Optical Access Network (OAN) has become a tendency of Access Network. As one of the most effective communications technologies of Access Network, EPON has the advantages of low cost, high bandwidth, flexibility and wild range of services. The usage and development of EPON technology and equipment lead to the new requirements and subject of EPON equipment management. The EPON standard is a part of the Ethernet standards. The EPON equipment supports SNMP and can be managed as a kind of IP equipments. But EPON equipment is different from ordinary IP equipments because of its own characteristics. The main point of this article is to design and implement the fault manage module of EPON network element manage system.The standard of requirements and actual requirements of fault manage module are analyzed in detail. The processes of the module, connections between all the functions and some necessary arithmetic are well designed. According to the functions, fault manage module is divided into four sub modules, including fault collection sub module, real-time display sub module, display filtration sub module and event disposal sub module. The fault manage module is divided into four layers. Fault collection sub module belongs to the collection layer. Real-time display sub module, display filtration sub module and event disposal sub module belong to server layer. GUI user interface is used in the display layer. On database layer, Hibernate is used to support different kinds of databases. To guarantee the performance, stability and expansibility of fault manage module, a lot of advanced patterns and ways of design, such as Inversion of Control, Observer pattern, MVC pattern, are used in this module. Correlated data tables are used to reduce the computer space used to save the data. Callback from server to client is used to ensure the synchronization of data between different clients. XML file is used as the configuration file in client. In the end of this article, the ways to improve this fault manage module are been discussed.