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现有IP组播路由协议在MPLS中会碰到一些问题,文中先介绍了几种目前提出的在MPLS中支持组播的方案,对它们的工作原理和优缺点做了较详细的分析和比较,并对今后还需要改进的方面进行了论述。
Existing IP multicast routing protocols encounter some problems in MPLS. In the first part, several schemes for multicast support in MPLS are introduced first, and their working principles, advantages and disadvantages are analyzed and compared in detail , And discussed the aspects that need improvement in the future.