A growable interconnect fabric cell switch module including a plurality of first cell switches for interconnecting cells; a plurality of second cell switches for interconnecting the cells outputted from the first cell switches; a plurality of third cell switches for interconnecting the cells outputted from the second cell switches; and a path arbitrating device for making a decision on cell transfer permission and on which second cell switch ought to be used in a cell transfer, based on a demanded cell number, which indicates a number of the cells which demand to be transferred from each first cell switch to each third cell switch.