Communication Node Communication System Packet Processing Method And Program

Abstract: The purpose of the present invention is to enable a communication node of a centralized control type network to change an instruction (control information) given from a control device without querying a control device at such time or having to arrange beforehand in a flow table an alternate flow entry at the time of a malfunction. The communication node is provided with the following: a packet processing section for processing a reception packet by referencing a first table in which is stored matching conditions for verifying a reception packet and an entry for which processing content applied to a packet which conforms to such matching conditions is stipulated; and an autonomous operation section for rewriting in accordance with an event that has occurred the entry in the first table by referencing a second table in which are associated an event and change content applied to the entry stored in the first table when the occurrence of such event is detected.

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