Route control apparatus and route control method

A route control apparatus, comprising:

• a memory;
• and
• a processor coupled to the memory and the processor configured to:
• acquire a traffic volume of a path between each pair of nodes in a data transmission route from a plurality of nodes, the data transmission route being formed utilizing a network including the plurality of nodes;
• determine on basis of the acquired traffic volume whether the data transmission route is to be changed;
• identify, upon determining that the data transmission route is to be changed, a first pair of nodes and a second pair of nodes on basis of the acquired traffic volume and candidate information, the first pair of nodes being to be newly connected to each other in the network, the second pair of nodes being to be disconnected from each other in the network, the candidate information being indicative of candidates for a pair of nodes to be connected to each other among the plurality of nodes;
• transmit an addition request to at least one node of the first pair of nodes, the addition request requesting to add a first path between the first pair of nodes to the data transmission route;
• and
• remove, after the first path is added, a second path between the second pair of nodes from the data transmission route by transmitting a change request to one node of the first pair of nodes and one node of the second pair of nodes, the change request requesting to change a current connection relationship between each pair of nodes in the network.

A route control method, comprising:

• acquiring, by a computer, a traffic volume of a path between each pair of nodes in a data transmission route from a plurality of nodes, the data transmission route being formed utilizing a network including the plurality of nodes;
• determining on basis of the acquired traffic volume whether the data transmission route is to be changed;
• identifying, upon determining that the data transmission route is to be changed, a first pair of nodes and a second pair of nodes on basis of the acquired traffic volume and candidate information, the first pair of nodes being to be newly connected to each other in the network, the second pair of nodes being to be disconnected from each other in the network, the candidate information being indicative of candidates for a pair of nodes to be connected to each other among the plurality of nodes;
• transmitting an addition request to at least one node of the first pair of nodes, the addition request requesting to add a first path between the first pair of nodes to the data transmission route;
• and
• removing, after the first path is added, a second path between the second pair of nodes from the data transmission route by transmitting a change request to one node of the first pair of nodes and one node of the second pair of nodes, the change request requesting to change a current connection relationship between each pair of nodes in the network.