网络,技术,业务——构筑新一代城域传输网络平台

Network, Technology, Service Building the next generation metro transport network platform

城域网已经成为网络建设的重点之一。本文从城域传输网络对网络结构和组网设备的要求出发,提出网络层次的扁平化将是城域网络建设的发展趋势,并且网络拓扑结构将逐渐从现在的环网为主向网格状的网络发展,同时伴随着网络设备的高速化和智能化,以及对多业务的支持能力,将构筑起新一代的城域传输网络平台。

Metro networks is becoming one of the focuses of the transport network construction. This paperanalyses the requirements of networking architectures and network elements of metro transport networks,and draws the conclusions that the network layers flattening is the trend of the metro networks architecture;the mesh topology will be the mainstream of metro networks replacing the traditional ring topology. Moreover,the next generation metro transport platform will be accomplished via the high-speed, intelligent andmultiservice supported network elements.