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研究了基于多协议标签交换(MPLS)的虚拟私有网络(VPN)技术原理,给出了基于MPLS VPN的组播模型,同时对该模型涉及到的关键技术包括标签交换的发起方式、信令选择、组播路由协议及对MPLS VPN组播实现技术的影响进行了分析,在解决实际网络应用时,不仅考虑了其技术的可行性和先进性,还考虑了目前网络中采用协议的兼容性。并提出了一种可行的MPLS VPN组播方案。
The principle of Virtual Private Network (VPN) based on Multi-Protocol Label Switching (MPLS) was studied. The multicast model based on MPLS VPN was given. At the same time, the key technologies involved in the model were the initiation mode of label switching, signaling selection , Multicast routing protocol and its impact on MPLS VPN multicast implementation technology. When solving practical network applications, not only the feasibility and advancedness of its technology are considered, but also the compatibility of protocols adopted in current networks. And proposes a feasible MPLS VPN multicast scheme.