PACKET TRANSFER DEVICE, NETWORK CONTROL SERVER, AND PACKET COMMUNICATION NETWORK

摘要

PROBLEM TO BE SOLVED: To transfer a packet by using an entry having the highest selection priority in packet transfer devices even when a plurality of network control servers control the entry rewriting of a table.

SOLUTION: The packet transfer devices 127-129 add a field indicative of the identifier of the network control server describing a entry of a transfer table and a field indicative of the priority for selecting the single entry when a plurality of entries are matched in retrieving the transfer table to the entry of the transfer table through the plurality of network control servers 111-113 installed on a packet communication network in accordance with a control request to the entry of the transfer table.

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