Taizhou Netcom Ip Broadband Metropolitan Area Network Design

Metropolitan Area Networks (MAN) have emerged as a key network build-out point. In recent years, the bandwidth in Local Area Networks (LAN) has increased rapidly, driven by the widespread adoption of Gigabit Ethernet (GbE), while bandwidth capacity in wide area networks (WAN) has exploded, driven by the proliferation of Dense Wave Division Multiplexing (DWDM) technology and high-speed 0O48/192 links. As a result, the new bottleneck is in the MAN, the traffic intersection of the LAN and WAN and the natural home for much of the world's bandwidth and next-generation network services.Broadband metropolitan area networks is now focuses on communications networks development. First, the paper presents conceptions, characteristics and structures of broadband metropolitan area networks, then presents main construction plan for broadband metropolitan area networks such as IP over ATM, IP over GE , IP over DWDM, finally take the construction plan of CNC s broadband metropolitan area networks in Taizhou for example , presents the principle for construction plan .