According to an embodiment, an information processing apparatus includes: a receiving unit that receives a fragment packet; an extracting unit that extracts checksum information of which packet has not been subjected to the fragmentation process, and causes the checksum information to be stored in a checksum storage unit; a calculating unit that performs a checksum calculation on each of the plurality of received fragment packets, integrates a calculation result of each fragment packet, and causes an integrated calculation result to be stored in a calculation result storage unit; and a determining unit that determines whether or not there is an error in a packet obtained as a result of combining based on the integrated calculation result stored and the checksum information stored.