An information processing apparatus includes a plurality of offload devices each of which offloads and executes a relay process of a virtual switch, each of the plurality of offload devices including a memory that stores port conversion information, the port conversion information associating virtual port identifiers for identifying virtual ports before and after a virtual port to which a virtual machine executed by the information processing apparatus is connected is moved between the offload devices, and a processor coupled to the memory and that converts an input virtual port identifier for identifying an input virtual port into which a packet is input based on the port conversion information, searches an output virtual port identifier for identifying an output virtual port of the packet by using the converted input virtual port identifier, and converts the searched output virtual port identifier based on the port conversion information.