宽带IP城域网组网的设计.docVIP

摘 要 宽带IP城域网是IP骨干网在城域范围内的延伸和覆盖，是覆盖城市、郊区及其所辖的县市和地区，提供城域多业务的网络。宽带IP城域网承担集团用户、商用大楼、智能小区的业务接入和电路出租任务，具有覆盖面广、投资量大、接入技术多样和接入方式灵活的特点。 关键词：宽带IP城域网 主干网 IPv4 弹性分组环RPR Abstract Broadband IP intracity networks is IP backbone in metro within the scope of the extension and cover,is covering city,suburbs and the virtue of counties and regions, providing more business network metro. Broadband IP intracity networks bear group users, commercial buildings, intelligent community business access and circuit rent task, have coverage, amount invested large,access technology diverse and access the characteristics of flexible mode. IP man bounded littered backbone or provinces nets and user stations nets or end-user between, will enterprise and individual customers various business connected to the backbone. This specification mainly provides the Chinese broadband IP based on IPv4 construction.this network structure, network organization, routing protocols, routing strategies, nets, network performance between interconnected, quality of service, network management, network security, transmission technology, business, Numbers scheme, address assignment device configuration principle, the engine room design, etc. The development of broadband IP intracity networks because its application complexity, the emergence of a diversity of the situation. In fiber net direct architecture auspicious bits Ethernet (the future is 10GbE) broadband IP intracity networks are become mainstream. Elastic grouping ring into new standard RPR will develop. These will be widely used for competitive operators.More from the SDH evolution will be more business platform for the traditional operators used the tools to IP business transition. The original more business platform based on ATM will gradually to withdraw from the field. For Tb/s more broadband metro core nets,will use the light switch by DWDM (wavelength router) constitute light much business platform. Operators construction broadband metropolitan design