| With the rapid development of Internet services, higher and higher requirements of network bandwidth are needed. Since the backbone has already the adequate ability to sustain the broadband, access network bandwidth becomes the bottleneck of the whole network. As a solution for access network, EPON (Ethernet Passive Optical Network) has mature technology and broad application of Ethernet. It has a Point-to-Multipoint architecture and provides Multi-Service basing on Ethernet. It combines the advantage of Pon technology and Ethernet technology.With its features of high bandwidth, low cost and being used and updated easily. EPON is the best solution for access network. With EPON international standard—IEEE802.3ah being released in 2004, the industry alliance of EPON has appealed many manufactures to participate actively. Now in North America and Japanese FTTH has been developed in a large scale, and in China the experiment of FTTH has been started in some places.In order to guarantee EPON to operate steadily and efficiently, it is important to provide a reliable network management system.The main aspect of EPON network management system is the design of the software, which is called EMS (Element Management System).The proxied devices of EPON is very large, and network management software runs in embedded board,so the"simple and shortcut"SNMP (Simple Network Management Protocol) is used to develop EPON's EMS. But the SNMP which is the protocol of the application layer requires lower layer working normally and managed devices transmitting IP frames right, so the conventional SNMP has been difficult to match the need of the management of the access network.Base on the above reason, IEEE802.3 committee adds a suite of OAM (Operations Administation Maintenance) protocols which achieve management goal of the data link layer of the access network. In this thesis, we propose design schemes of manager and proxy agent base on SNMP and OAM.The programme based on OAM protocol is the... |
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