Patent ID: 9160660
Filing Date: 2015-10-13
Classification: H04L

Abstract:
1. A router apparatus connecting a first network and a second network, the router apparatus comprising: a storage unit which stores association information, the association information associates an address of one of a plurality of second router apparatuses, having different addresses from each other, with an address of a corresponding one of a plurality of server apparatuses, each of the server apparatuses is assigned the same address, where the second router apparatuses are connected, on one hand, to the first network and, on the other hand, to the server apparatuses via respective third networks; a receiving unit which receives a packet transmitted from a terminal apparatus and transferred via the first network; a processor which encapsulates a packet received from the terminal apparatus and transferred, via the second network and one of the third networks, to one of the server apparatuses, into a packet which is transmitted, via the second network, to one of the second router apparatuses and has a destination address corresponding to an address of that second router apparatus associated with an address of the packet received from the terminal apparatus, based on the association information; and a transmitting unit which transmits the packet encapsulated by the processor to the first network.