INFORMATION SYSTEM, CONTROL DEVICE, COMMUNICATION METHOD AND PROGRAM

摘要

According to the present invention, an information system in which a control apparatus controls a plurality of physical nodes can achieve efficient broadcast communication. The information system includes: a plurality of physical nodes each processing a packet supplied from an external node in accordance with a processing rule in which a matching rule that determines a flow and a processing content that is applied to a packet matching the matching rule are associated with each other; and a control apparatus setting the processing rule in the plurality of physical nodes and causing the plurality of physical nodes to operate as virtual nodes on a virtual network that can be used by the external node. The control apparatus includes a broadcast range management unit managing a broadcast range configured by physical nodes corresponding to a previously-selected virtual node group on the virtual network and interface information about the physical nodes. The control apparatus refers to a network topology established by a connection relationship among the physical nodes and sets a processing rule realizing broadcast communication within the broadcast range in physical nodes on a path(s) of the broadcast communication.