Clos型大规模ATM交换网络的虚连接无阻塞特性研究

Researches on Non Blocking Properties of Large Scale Clos Type ATM Switching Fabrics with Virtual Connection Routing

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

The characteristics of virtual connection blocking of large scale Clos type ATM switching fabrics are studied.Firstly,the basic properties of Clos type ATM switching fabrics with virtual connection routing are described,and then its strictly nonblocking condition of traditional Clos type ATM switching fabrics is deduced.Finally,the disadvantages of traditional Clos type ATM switching fabrics are pointed out,and the concept“internal links partitioning”is proposed while the strictly nonblocking condition of the Clos type ATM switching fabrics with internal links partitioning structure is also deduced.