1、毕业设计（论文）毕业设计（论文） I 摘摘 要要 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。IP 城域网界于全国骨干网或省网和用户驻地网或终端用户之间，将 企业和个人客户的各种业务连接到骨干网中。 本规范主要规定了基于 IPv4 的我国宽带 IP 城域网的网路结构、网路组织、路由协 议、路由策略、网间互联、网络性能、服务质量、网络管理、网络安全、传送技术、业 务、编号方案、地址分
2、配设备配置原则、机房设计等。 宽带 IP 城域网的发展由于其应用的复杂性，出现了多样性的局面。在光缆网上直 接架构吉位以太网（将来是 10GbE ） 宽带 IP 城域网正在成为主流。弹性分组环 RPR 将发展成新标准。这些将为竞争的运营商广泛采用。而从 SDH 演化的多业务平台将更多 为传统运营商用做向 IP 业务过渡的工具。原有基于 ATM 的多业务平台将逐渐退出这一 领域。对于 Tb/s 以上的宽带城域核心网，将采用由 DWDM 和光交换机（波长路由器）构 成的光多业务平台。运营商建设宽带城域网采用何种方案、设备取决于它的市场定位， 服务对象要求以及它所拥有的资源情况，进行综合分析做出选择
3、。 关键词：关键词：宽带宽带 IPIP 城域网城域网 主干网主干网 IPv4IPv4 弹性分组环弹性分组环 RPRRPR 毕业设计（论文）毕业设计（论文） II 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. Broadb
4、and 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 s
5、tations 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, net
6、work 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 mai
