Patent ID: 11902035
Assignee: YOKOGAWA ELECTRIC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A redundancy method implemented in an information processing device that performs communication using a first communication method and using a second communication method whose communication speed is higher than the first communication method, the redundancy method comprising:
performing a first equalization of data and operating condition of an application for processing using the first communication method through a first network interface with respect to a first information processing device in a redundancy system in which redundancy is achieved between the first information processing device and a second information processing device using the first communication method through the first network interface; and
building that includes
performing, after completion of the first equalization, a second equalization of data and operating condition of the application for processing using the second communication method with respect to a third information processing device, and
building a redundancy system in which the second information processing device and the third information processing device are used, and
determining that includes
performing negotiation using the first communication method through the first network interface, and
determining whether or not the third information processing device has adapted the second communication method, wherein

in a case where it is determined that the third information processing device has adapted the second communication method, the second equalization is performed using the second communication method through a second network interface between the second information processing device and the third information processing device, and
in a case where it is determined that the third information processing device has not adapted the second communication method, the second equalization is performed using the first communication method through the first network interface between the second information processing device and the third information processing device.