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本文首先分析了DDN专线方式组建VPN网络的缺点,然后利用电信运营商组建的MPLS骨干网,从用户的角度设计了基于IP城域网的MPLS VPN模型。
This paper first analyzes the shortcomings of establishing DDN private line VPN network, and then uses the MPLS backbone network set up by telecom operators to design MPLS VPN model based on IP MAN from the user’s perspective.