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本文对Ｃｌｏｓ 型大规模ＡＴＭ 交换网络的虚连接阻塞特性进行了研究．首先给出了基于虚连接的Ｃｌｏｓ 型ＡＴＭ 交换网络的基本特性，证明了传统Ｃｌｏｓ 型ＡＴＭ 交换网络的虚连接严格无阻塞条件．在指出了传统Ｃｌｏｓ 型ＡＴＭ交换网络在虚连接路由选择操作中存在的问题后，提出了“内部链路分群”的概念，证明了具有内部链路分群结构的Ｃｌｏｓ 型ＡＴＭ 交换网络的虚连接无阻塞条件
In this paper, the clos connection characteristics of Clos type large-scale ATM switching network are studied. First of all, the basic characteristics of Clos type ATM switching network based on virtual connection are given, and the strict non-blocking condition of the virtual connection of the traditional Clos type ATM switching network is proved. After pointing out the problems of traditional Clos type ATM switching network in the virtual link routing operation, this paper proposes the concept of “internal link grouping”, and proves that the virtual connection of Clos type ATM switching network with internal link grouping structure is unimpeded Stuffing conditions