【摘要】 随着数据业务的增长,众多运营商开始研究怎样有效地开展城域数据新业务,以带来更大的业务收入和利润。本文分析了目前城域本地网中传统数据专线DDN的应用、性能和价格,同时提出了采用城域以太虚拟专线出租的新的业务方式,通过与DDN进行比较,证实完全可以采用城域以太虚拟专线代替DDN开展数据专线业务,从而为运营商推荐一种新的业务发展方向。更多还原

【Abstract】 With the development of data services, the operators are interested in new metro data services that can make more profit for them. The traditional DDN application in the metro network is analyzed and the new service "Ethernet Virtual Private Line"(EVPL) is analyzed. The paper shows that VPL can take the place of DDN in metro networks and EVPL can be new service mode for the operators.更多还原