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近几年来,随着社会信息化进程的加快,社会网络化应用开始向纵深发展,外联网、存储网络、局域网互连、高速数据传送、VOD点播、会议电视等新旧业务和应用的需求不断丰富,进而对网络带宽产生更高的需求。目前,骨干网带宽已经比较丰富,宽带接入手段多样化,带宽的瓶颈在城域网表现得最为突出。因此,迫切需要构建更高带宽的IP城域网络。
In recent years, with the acceleration of social informationization, the application of social networking started to develop in depth. The demand for new and old businesses and applications such as extranet, storage networking, LAN interconnection, high-speed data transmission, VOD, , Which in turn has a higher demand for network bandwidth. At present, the bandwidth of the backbone network is already abundant. Broadband access means are diversified. The bandwidth bottleneck is most prominent in the MAN. Therefore, there is an urgent need to build a higher bandwidth IP MAN network.