Method and apparatus for controlling route in network

A route controlling method of a route controlling apparatus provided on a center side in a network in which the center side and a base side are connected by a plurality of different carriers, the route controlling method comprising:

• creating a new entry in a load distribution table when data is received by a host on the center side from a host on the base side, wherein the new entry a carrier selected for transmission of the data by a router on the base side is associated with an address of the host on the base side;
• referring to a load-distribution inapplicability table when data is to be transmitted from the host on the center side to the host on the base side;
• and
• selecting, as a route through which the data is to be transmitted, the carrier in the new entry when the address of the host on the base side is not registered in the load-distribution inapplicability table, while otherwise selecting a carrier that is set in advance for the host on the base side.

A route controlling apparatus provided on a center side in a network in which the center side and a base side are connected by a plurality of different carriers, the route controlling apparatus comprising:

• a load distribution table;
• a load-distribution inapplicability table;
• and
• a controlling unit
• configured to create a new entry in the load distribution table when data is received by a host on the center side from a host on the base side, wherein in the new entry a carrier selected for transmission of the data by a router on the base side is associated with an address of the host on the base side,
• configured to refer to the load-distribution inapplicability table when data is to be transmitted from the host on the center side to the host on the base side, and
• configured to select, as a route through which the data is to be transmitted, the carrier in the new entry when the address of the host on the center side is not registered in the load-distribution inapplicability table, while otherwise to select a carrier that is set in advance for the host on the center side.

A route controlling apparatus provided on a center side in a network in which the center side and a base side are connected by a plurality of different carriers, the route controlling apparatus comprising:

• a load distribution table;
• a load-distribution inapplicability table;
• and
• a controlling unit
• configured to create a new entry in the load distribution table when data is received by a host on the center side from a host on the base side, wherein in the new entry a carrier selected for transmission of the data by a router on the base side is associated with an address of the host on the base side,
• configured to refer to the load-distribution inapplicability table when data is to be transmitted from the host on the center side to the host on the base side, and
• configured to select, as a route through which the data is to be transmitted, the carrier in the new entry when the address of the host on the center side, the address of the host on the base side, and a port number to be used for transmission of the data are not registered in the load-distribution inapplicability table, while otherwise to select a carrier that is set in advance for the host on the base side.