With the rapid commercial applications of the WDM technology and the explosive growth of the transmission bandwidth of backbone networks, network survivability has become increasingly more important.
随着波分复用(WDM)技术的迅速商用化，骨干网络传输带宽呈现爆炸式增长的趋势，这使得网络生存性变得越来越重要。
University campus network backbone bandwidth is generally upgraded to Gigabit or even Gigabit, wireless coverage to expand, the export flow increased year by year.
高校校园网网络主干带宽普遍升级到千兆甚至万兆，无线覆盖范围扩大，出口流量逐年增长。
With the evolution of metropolitan transmission network and the bandwidth requirement, DWDM technology will be entered into metropolitan network area from long haul backbone network.
随着城域传输网的演变和对带宽的需求，密集波分复用技术将由长途骨干网进入城域传输网。
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