Network controller, cluster system, and non-transitory computer-readable recording medium having stored therein control program

Abstract

A network controller including a virtual network setter that sets a virtual communication interface; a dummy packet generator that obtains communication progress information representing a communication progress state of communication of the second processing device with the connection destination device by causing the virtual communication interface to process a dummy packet that causes a receiver of the dummy packet to falsely recognize that the dummy packet is transmitted from the connection destination device; a reset packet generator that generates a reset packet containing the communication progress information; and a reset packet processor that removes, based on the reset packet, connection record information of the second processing device and the connection destination device, the connection record information being stored in the second processing device. This configuration prevents congestion when a processor is switched to another in a cluster system from occurring.