Patent ID: 11888757
Assignee: NEC CORPORATION
Field: Digital communication (Electrical engineering)
Classification: CPC H  G | IPC H

Claim 10:
11. A communication method that is performed by a communication apparatus, the communication method comprising:
communicating with a management apparatus that manages states of a plurality of communication apparatuses of a network directly or via another communication apparatus;
when a failure in communication has not occurred at a side of the management apparatus, transferring to the management apparatus a state change notification transmitted from a first communication apparatus located on the side of the management apparatus, and indicating a state change in the first communication apparatus, by relaying communication between the management apparatus and the first communication apparatus, wherein the state change notification is transferred to the management apparatus so that the management apparatus performs a calculation for state management using the state change notification, such that the communication apparatus does not perform the calculation when the failure has occurred;
when the failure in communication has occurred, performing the calculation for state management that is ordinarily and otherwise performed by the management apparatus but that cannot be performed by the management apparatus due to the state change notification not being transferred to the management apparatus, using the state change notification, and outputting the state change notification without transferring the state change notification to the management apparatus;
when the failure in communication has occurred and once the failure has been resolved, transmitting a result of the calculation to the management apparatus when the failure in communication.