某公司网络建设方案(供参考供参考)供参考前言.........................................................................................................................................1一需求分析.....................................................................................................................1二系统设计原则.............................................................................................................1第一章方案概述.............................................................................................................................21.1先进性、成熟性和系统性能.............................................................................................21.2可靠性和容错性.................................................................................................................21.3网络安全性.........................................................................................................................31.4虚拟网支持.........................................................................................................................31.5第三层交换技术.................................................................................................................31.6网络管理和流量监控.........................................................................................................41.7开放性和标准支持.............................................................................................................41.8可扩展性及系统升级能力.................................................................................................4第二章方案总体设计.....................................................................................................................52.1设计原则.............................................................................................................................52.2核心层设计.........................................................................................................................52.3汇聚层设计...................................................................................................