A network management apparatus includes a processor, and a storage. The storage that stores an operation type indicating a rollback operation method by associating with attributes held by a command defining network settings. The processor executes extracting a difference between a command forming current setting information and a command forming previous setting information when the setting information set by the command is brought back to the previous setting information and acquiring the operation type corresponding to extracted command attributes from the storage unit, to generate a rollback command defining the rollback operation in accordance with the acquired operation type.