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继１９９３年ＩＢＭ公布了它的ＡＴＭ策略后，１９９５年９月ＩＢＭ又推出它的交换虚拟网络（ＳＶＮ）策略。文中简要介绍ＳＡＮ的策略目的、ＳＮＡ模型、实施ＳＶＮ的三个阶段以及ＳＮＡＡＴＭ集成等．
Following IBM’s announcement of its ATM strategy in 1993, IBM introduced its Exchange Virtual Network (SVN) strategy in September 1995. The article briefly describes the strategic objectives of the SAN, SNA model, the implementation of the three stages of SVN and SNAATM integration.