An information processing apparatus configured to detect congestion caused by a plurality of flows passing through a network, the network including a plurality of switch devices, the information processing apparatus includes a memory, and a processor coupled to the memory and configured to receive first information from a first switch device included in the plurality of switch devices, the first information indicating that the congestion occurs in the first switch device, receive second information from a second switch device that is included in the plurality of switch devices and receives a packet from the first switch device, the second information indicating at least one flow included in the plurality of flows which pass through the first switch device, and based on the first information and the second information, identify, from the at least one flow which passes through the first switch device, a specific flow which causes the congestion.