Network management system, and network management method

A network management method performed by a first server unit connected to a first communication node included in a plurality of communication nodes, the communication nodes connected to a network and a plurality of base stations each of which covers corresponding one of a plurality of communication areas, the method comprising:

• for disconnecting an abnormal flow from each of a self-covered region that is a region covered by a management server included in the first server unit, and one or more primary adjacent regions that are one or more regions adjacent to the self-covered region in a state that a mobile object that transmits the abnormal flow has moved to the corresponding region,
• transmitting a first disconnection setting request for disconnecting the abnormal flow to the communication node connected to the self-covered region;
• and
• transmitting a second disconnection setting request for disconnecting the abnormal flow to each of one or more second server units that cover the one or more primary adjacent regions,
• wherein each of the plurality of regions includes two or more communication areas each of which is covered by corresponding one of two or more base stations connected to an identical communication node.

A non-transitory computer-readable medium storing a computer program executed by a computer that functions as a management server included in a first server unit connected to a first communication node included in a plurality of communication nodes, the communication nodes connected to a network and a plurality of base stations each of which covers corresponding one of a plurality of communication areas, under the program the computer executes:

• for disconnecting an abnormal flow from each of a self-covered region that is a region covered by a management server included in the first server unit, and one or more primary adjacent regions that are one or more regions adjacent to the self-covered region in a state that a mobile object that transmits the abnormal flow has moved to the corresponding region,
• transmitting a first disconnection setting request for disconnecting the abnormal flow to the communication node connected to the self-covered region;
• and
• transmitting a second disconnection setting request for disconnecting the abnormal flow to each of one or more second server units that cover the one or more primary adjacent regions,
• wherein each of the plurality of regions includes two or more communication areas each of which is covered by corresponding one of two or more base stations connected to an identical communication node.