Intelligence- defined optical tunnel network system controller and control method thereof

A network system controller, configured to control a plurality of optical switches and a plurality of top rack switches to build optical tunnels, the network system controller comprising:

• a shared memory;
• a topology transformer, coupled to the shared memory, configured to calculate a routing path table, and store the routing path table to the shared memory;
• a tunnel scheduling module, coupled to the shared memory, configured to build an optical tunnel network according to the routing path table, and to transfer a control command according to an optical tunnel network configuration of the optical tunnel network;
• a configuration managing module, coupled to the tunnel scheduling module, configured to convert the control command into a control signal and to output the control signal to the optical switches and the top rack switches;
• and
• a bandwidth usage monitor, coupled to the shared memory and the tunnel scheduling module, configured to receive flow statistics from the top rack switches, to calculate dataflow rates and bandwidth usage rates according to the flow statistics, and to transfer a load notification to the tunnel scheduling module according to the bandwidth usage rates, the tunnel scheduling module configured to replan the optical tunnel network according to the bandwidth usage rates and the optical tunnel network configuration.