A bottleneck path prediction/storage unit predicts a bottleneck path, that is, a logic circuit whose transmission rate is limited by a cell switching unit other than a predetermined cell switching unit, the logic circuit being one of the logic circuits which use a predetermined physical circuit in the predetermined cell switching unit. An ER computation unit sets an ER value in a resource management cell transferred through the physical circuit based on a state (number of active logic circuits) of the logic circuit which uses the physical circuit and information about the bottleneck path predicted by the bottleneck path prediction/storage unit.