Research Of Programming And Designing Of Wide-band Metropolitan Area Network

1.IntroductionThe metropolitan area network is a computer net concept at first, at present discusses the metropolitan area network refers is the city territory ethernet /IP metropolitan area network, is the data network category. The city territory transmission network refers in the city territory scope provides the transmission circuit for each kind of service network the foundation load bearing network, is similar locally in transmits the net, including optical fiber and so on. Along with data equipment and so on service fast growth as well as MSTP/MSPP appearances, both will be able to have certain fusion in the network edge.2.The wide band metropolitan area network whole planWhen makes the wide band metropolitan area network concrete design, should the overall evaluation network architecture, the route agreement and the route strategy, the IP address division and the domain name system, the network management system, the authentication cost and the business management system 5 links; At the same time, the union actual factor, including the user scale, the equipment performance, the service type, wide band network management system function and so on, provides the integrity solution for the operation business which may the operation, be possible to gain.3.The wide band metropolitan area network principle of design and implementsThe Xinpin IP data network to be supposed to be by TCP/The IP agreement is the foundation, Has the large capacity high speed transmission ability, the reliable stable guarantee grade of service transport business level wide band IP network, the entire network technically localization is optics network which IP optimizes, take the optical fiber as the main transmission medium, take IP as the main communication protocol. In the construction, the network system construction will follow the advanced principle, the usable principle carries on the system the plan, the analysis, the design, the development, the maintenance and the project management. Simultaneously"might the operation, be possible to manage, may to develop"and the highest price performance integrates compared to the thought to the design in. This request uses the system structure must be advanced, the opening architecture uses the advanced networking, the criss-crossed cross winding trades the technology, the network management technology, through the intellectualized network equipment and the network management software realization to the computer network system effective management and the control, the real-time monitoring network movement situation, fixes the network breakdown promptly, on prompt adjustment and balance network information current capacity; The usability is can maximum limit satisfy the practical work request, is each information system one system performance which must consider in the construction process, it is the automated system to the user most basic pledge, therefore, looked from the practical application angle, this performance is more important.The city territory data network may divide into the core level, the gathering level, the turning on level and the service control and the business management level. Core level, the gathering level, the turning on level have the obvious level function level, but the service key-course and the business management level completes the service separately the control and the management function, is logical level which comes out abstractly in the first 3 levels, in fact exists in other 3 network level, with each level network equipment close union. In the city territory data network, the core level should use high speed IP Exchange technology; The gathering level uses the intelligent IP end office technology; The turning on level may act according to the service demand and the actual situation, uses the multiplex width, the narrow band synthesis turning on technology nimbly; Service key-course and business management level unification to network each implementation management. Each constructs together supports the wide band metropolitan area network which the end-to-end voice, the data, the image, the special line and each kind of increment service may the operation be possible to manage. According to the above request in the actual implementation XINpin take the SDH transmission network as the to foundation, the exportation uses the high performance SDH The high end router, passes Quidway S8016 PASS SDH 100M connects following 9 areas the route switchboard on 8016, forms a ring net protection, thus thesimplificationnetwork construction reduces the cost,Simultaneously Quidway8016 the routeswitch board has the port density big characteristic, supportedtheservice to be rich, has facilitated the entire metropolitan area network expansion ability.4.The conclusionThrough to Xinpin's wide band metropolitan area network plan and the design, draws following conclusion:(1)Links to the XIN Pinxian reality, conducts the research to the wide band metropolitan area network turning on technology key technologies, proposed the XIN Pinxian wide band metropolitan area network construction, carries on the discussion to this metropolitan area network feasibility, has determined the network security security and the management plan.(2)Has analyzed the development wide band metropolitan area network importance, when makes the wide band metropolitan area network concrete design, overall evaluation network architecture, route agreement and route strategy, IP address division and domain name system, network management system, authentication cost and business management system 5 links; At the same time, the union actual factor, including the user scale, the equipment performance, the service type, wide band network management system function and so on, provides the integrity solution for the operation business which may the operation, be possible to gain.(3)Has studied the network principle of design as well as the implementation method. This principle basis different grouping size to the network performance influence, uses the mature network technology reduction investment risk and the network design standardization request carries on the design. Causes the Xinpin IP data network entire network technically localization is optics network which IP optimizes, take the optical fiber as the main transmission medium, take IP as the main communication protocol. Achieves one by TCP/IP agreement for the foundation, has the large capacity high speed transmission ability, the reliable stable guarantee grade of service transport business level wide band IP network. According to the Xinpin IP data network scale, the service type, the user distribution and so on the selection reasonable technologies, and the full consideration and the service level disposition relations, consider two stratification planes the coordinations. Simultaneously displays the network management system formidable ability, realizes in truly the metropolitan area network the nimble electric circuit dispatch and the end-to-end management. Caused Sinpin's wide band metropolitan area network structure to suit the service development to need as well as the network development need.