FAILURE RECOVERY SYSTEM, FAILURE RECOVERY METHOD, AND BACKUP NETWORK SLICE CREATION PROGRAM FOR MULTIPLE NETWORK SLICES

摘要

PROBLEM TO BE SOLVED: To provide a failure recovery system and method for multiple network slices that can ensure amounts of resources of nodes and links of a backup configuration switched at the time of occurrence of a failure and stably recover in a short time from the occurrence of the failure in a multiple network slice-environment by network slicing.;SOLUTION: A failure recovery system for multiple network slices has the same topology as a physical network, generates a plurality of backup configurations used when a failure occurs in a node or link, and includes backup network slices to which an amount of resources is allocated for communication by a bypass route that does not use a faulty part in the backup configurations. In network slices affected at the time of the failure, a configuration not using a faulty part is selected from a virtual backup configuration corresponding to each of the backup configurations, and communication is performed by the bypass route using resources of the backup network slices.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2021,JPO&INPIT