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比较了IP直接传输和通过ATM网络传输IP业务的特点 ,详细描述了下一步以IP为核心业务的三种可能的传输网络结构 :DWDM线路系统组成的SONET环、DWDM线路系统连接的交叉连接系统构成的网状网和无交叉连接设备的DWDM光纤网 ,以及各种结构中主要管理功能的实现 ,并对各种传输网络结构的性能和成本进行了具体分析
The characteristics of IP direct transmission and IP service transmission over ATM network are compared. The three possible transmission network structures with IP as the core business are described in detail: SONET ring composed of DWDM line system and cross connection system connected with DWDM line system Structure of the network and non-cross-connected devices DWDM optical network, and a variety of structures in the main management functions to achieve, and a variety of transmission network structure of the performance and cost of a specific analysis