Network system control method and network system

The invention discloses a network system control method, comprising the steps of intercepting a flow modification signal on a network protocol path between a switch and a controller, thereby obtaininga new flow item; accessing a flow table of the switch to obtain a plurality of flow entries; embedding at least one redundant flow item according to the new flow item and the plurality of flow entries; carrying out aggregation operation on the new flow item, the plurality of flow entries and the at least one redundant flow item, thereby generating a group of aggregated flow entries; and updatingthe flow table through utilization of the aggregated flow entries. 本发明公开了种网络系统控制方法，包含在交换器及控制器之间的网络协定路径，拦截流程修改信号，从而取得新流程条目；存取该交换器中的流程表，从而取得复数个流程条目；根据该新流程条目及该复数个流程条目，置入至少冗置流程条目；对该新流程条目、该复数个流程条目及该至少冗置流程条目执行聚合操作，从而产生组聚合后流程条目；及使用该组聚合后流程条目，更新该流程表。