| 摘要 |
Provided is a communication system comprising: a network comprising both a first switch learning a packet output destination based on a source address of an incoming packet and determining a destination of a next incoming packet based on a result of the learning and a second switch outputting a packet in accordance with a preset path; and a control apparatus. The control apparatus is connected to the network and comprises: a switch control unit controlling the second switch; a path examination unit determining whether communication from an arbitrary source connected to the network uses a plurality of paths; and an erroneous learning prevention processing unit executing, when a merging point of the plurality of paths is the first switch, a predetermined erroneous learning prevention process. Occurrence of a loop or route flapping is prevented in a network environment including both a switch having an address learning function and a switch without such function. |
