Hfc Broadband Access Snmp-based Network Management System Research And Development

HFC access network is the one of the three most important networks in the world. And because of the indeed broadband capability and the low cost, HFC has gained great advantage in the competition of the network. But the HFC network of our country was set up comparatively late. Now the management of CATV is mainly depending on the limited management capability of the devices, and this will not adapt to the development of the HFC network any longer. So, we need a more consolidated, and more effective HFC management system to solve this problem.This article is started with the network management concepts, intentions, and functions. Then, it expatiated the importance of the network managemet and some development in this field. Referenced the progress which Tele-Communication and Internet management has achieved, I brought forward a HFC access network management system based on TMN model and SNMP protocol. With the success TMN has done in the Tele-Communication network and the rapid development of SNMP, 1 think it's a feasible, easy way to realize the HFC management. And this may have great value in the progress of HFC network.SNMP management system is based on the manager-agent model. Because of most of the HFC access devices do not support SNMP protocol now, we must first expand an agent that SNMP can realize. And then we should embed this agent software into the HFC devices. After that, this device will become an equipment managed based on SNMP protocol. It is required to develop a useful HFC access network management system software works on Windows or other familiar operation system such as Linux and so on.Nowadays, there are many good network management platforms in the world. HP OpenView is one of these platforms. The most advantage of HP OpenView is the wide acceptance by the third part devices development companies. HP OpenView NNM SDK provides abundant SNMP APIs named OVSNMP API. By using these APIs, users may develop powerful management software in short time.The fifth charpter is the key charpter of this article. This charpter explicates how to use the OVSNMP API to realize the SNMP basic functions (such as get, trap and set). And it also introduces the method how to define the HFC device MIB and then integrate it into HP OpenView system. Based on the user defined MIB and the basic operation (get, set and trap), I developed a HFC network management system software. With the cooperation of the agent, we can examine the status of the devices timely, and the software is a useful tool in practice.