|
With the application of fiber optic technology, the bandwidth of the backbone network has been greatly improved, the stability and security of the data has also been a good guarantee for large-capacity data transmission backbone network to provide a guarantee. With the increase in network operations, especially in recent years, video voice services, IPTV, online games, and high-bandwidth services, the emergence of user access network bandwidth requirements are also increasing, traditional access methods has been difficult to meet the needs of users, the emergence of FTTX technology is a good solution to the problem of insufficient bandwidth PON technology as the mainstream mode of FTTX, to provide users with a high-bandwidth, low-power consumption and less investment in broadband access technology. In PON technology, IEEE 802.3ah Ethernet-based EPON and ITU-T promulgated GPON has started from the pilot phase to begin large-scale deployment. Both PON technology can provide the G bit level bandwidth 10G EPON and WDM technology began in the trial which, PON technology will provide greater bandwidth. With the popularity of the network business integration as well as VoIP, IPTV, VOD business, this is not only the access network bandwidth higher requirements, and these different business requirements of network packet loss, delay, jitter and QoS are not the same, which makes the access network needs the different QoS different business applications as well as quality assurance, which greatly increase the difficulty of network management, forcing the access network management toward more convenient, more intelligent direction. With the scheduling and management of network and business needs, MAN and access network level will gradually evolve to the intelligent, and ultimately the whole network intelligent. At present, the existing intelligent network management mainly in the backbone network and local area network to access network-based intelligent research at home and abroad are still the minority. This topic intelligent optical access network key technologies based on the National Natural Science Foundation of China (60672025), designed to study the the smart access network management and access network-based testing techniques. This article provides an overview of the concept of intelligent access network, and some of the key technology and network characteristics are described in detail. Based on the access network management system to achieve the intelligent management of the ONU, the main achievement of the function: B / S mode remote operation of the management system, and application-based network segmentation, data services, mirroring, users rate control, which further is network management provides convenient operation of the working environment. The test network performance and the key of the analysis is to understand the operation of the network quality and design better network management programs, and network traffic is network performance evaluation metrics. Study analysis through the access network test specifications and to study \Books author graduate student involved in the research and development work of the Research Center of Beijing University of Posts and Telecommunications, communications test technology intelligent access network management system, the author completed the following work: 1. Reading a large number of access network technologies and platform direction key access network technology, intelligent access network characteristics, access network management platform to build, \Analysis then the data network management chip design NMS software structure, \aggregation capabilities. Build a network model of access network test theory and test methods \. This article is a summary of the theory of learning and research experience of the author during the graduate, is also connected to the intelligent network management and test a detailed description of the technical subjects, divided into the following three parts. The detailed description of the first part of the relevant details of the access network technology, key technology and network features intelligent access network, access network management platform to achieve foundation, and then the network testing technology; second part introduces the NMS design and implementation, including demand analysis, overall design, hardware implementation and software implementation; The third part introduces network-based access network testing techniques, including the access network performance testing and analysis, \, and the next job prospects; due to the restrictions of the theoretical level and practical experience, of irregularities in the papers inevitable criticism and urge teachers and experts.
|