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Architecture, performance, and implementation of the tandem banyan fast packet switch

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3 Author(s)
Tobagi, F.A. ; Stanford Univ., CA, USA ; Kwok, T. ; Chiussi, F.M.

The authors propose a new space-division fast packet switch architecture based on banyan interconnection networks, called the tandem banyan switching fabric (TBSF). It consists of placing banyan networks in tandem, offering multiple paths from each input to each output, thus overcoming in a very simple way the effect of conflicts among packets (to which banyan networks are prone) and achieving output buffering. From a hardware implementation perspective, this architecture is simple in that it consists of several instances of only two VLSI chips, one implementing the banyan network and the other implementing the output buffer function. The basic structure and operation of the tandem banyan switching fabric are described, and its performance is discussed. The authors propose a modification to the basic structure which decreases the hardware complexity of the switch while maintaining its performance. An implementation of the banyan network using a high-performance BiCMOS sea-of-gates on 0.8-μm technology is reported

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Selected Areas in Communications, IEEE Journal on  (Volume:9 ,  Issue: 8 )