A switch system comprising: an Open Flow functioning section adapted to: a) configure an OpenFlow table by logically combining a plurality of tables (124, 125, 126 and 127), each of which defines processing for a predetermined reception packet based on a condition and a processing content which are defined in each table, and b) refer to said OpenFlow table to determine the processing content for the reception packet; and an action functioning section adapted to execute processing to said reception packet based on the determined processing content; wherein said OpenFlow functioning section comprises: an L2/L3/other table search functioning section adapted to search an L2 table, an L3 table and the other table of said plurality of tables based on the reception packet, and to output an entry corresponding to the reception packet as a search result; a TCAM (Ternary Content Addressable Memory) search functioning section adapted to search the TCAM of said plurality of tables based on the reception packet, and to output an entry corresponding to the reception packet as a search result; and an Open Flow processing solving section which defines priorities of the TCAM, the L2 table, the L3 table and the other table, and which is adapted to receive the search results from said L2/L3/other table search functioning section and said TCAM search functioning section, and determine the entry to be adopted based on the priorities, and determine the processing content to the reception packet. an Open Flow functioning section adapted to: a) configure an OpenFlow table by logically combining a plurality of tables (124, 125, 126 and 127), each of which defines processing for a predetermined reception packet based on a condition and a processing content which are defined in each table, and b) refer to said OpenFlow table to determine the processing content for the reception packet; and a) configure an OpenFlow table by logically combining a plurality of tables (124, 125, 126 and 127), each of which defines processing for a predetermined reception packet based on a condition and a processing content which are defined in each table, and b) refer to said OpenFlow table to determine the processing content for the reception packet; and an action functioning section adapted to execute processing to said reception packet based on the determined processing content; wherein said OpenFlow functioning section comprises: an L2/L3/other table search functioning section adapted to search an L2 table, an L3 table and the other table of said plurality of tables based on the reception packet, and to output an entry corresponding to the reception packet as a search result; a TCAM (Ternary Content Addressable Memory) search functioning section adapted to search the TCAM of said plurality of tables based on the reception packet, and to output an entry corresponding to the reception packet as a search result; and an Open Flow processing solving section which defines priorities of the TCAM, the L2 table, the L3 table and the other table, and which is adapted to receive the search results from said L2/L3/other table search functioning section and said TCAM search functioning section, and determine the entry to be adopted based on the priorities, and determine the processing content to the reception packet. an L2/L3/other table search functioning section adapted to search an L2 table, an L3 table and the other table of said plurality of tables based on the reception packet, and to output an entry corresponding to the reception packet as a search result; a TCAM (Ternary Content Addressable Memory) search functioning section adapted to search the TCAM of said plurality of tables based on the reception packet, and to output an entry corresponding to the reception packet as a search result; and an Open Flow processing solving section which defines priorities of the TCAM, the L2 table, the L3 table and the other table, and which is adapted to receive the search results from said L2/L3/other table search functioning section and said TCAM search functioning section, and determine the entry to be adopted based on the priorities, and determine the processing content to the reception packet.