【摘要】 基于广电有线电视网络现状,从广电有线电视网络体制选择、广电城域网组网技术选择和组网方案比较分析等方面对广电宽带城域网改造提出一些看法,认为目前广电IP城域网组建方案主要有两种:采用高速路由器为核心的组网方案和采用高速LAN交换机为核心的方案,而采用高速路由器为核心的组网方案比采用高速LAN交换机为核心的组网方案更优秀,但由于高速大容量路由器的造价比高速LAN交换机高得多,组网时应根据具体情况选择最适合的方案。更多还原

【Abstract】 Based on the present situation of CATV,this paper gives some suggestions on the city-level broadcast television broadband network transformation from several aspects,such as the system selecting of CATV,the selecting of networking technology and the comparative analysis of networking schemes.The paper holds that there are two networking schemes.One adopts the high-speed router as the core,another adopts the high-speed LAN switch as the core.Though the former is better than the latter,it is also more expensive.So the networking scheme should be chosen according to the specific situation.更多还原