| 摘要 |
A communication system includes a plurality of forwarding nodes that process a received packet in accordance with a processing rule that determines a matching rule matching a packet and a process to be applied to a packet conforming with the matching rule; and a control apparatus that controls the forwarding nodes using control information. The control apparatus includes a tunnel establishing unit that determines forwarding path(s) for the respective control information for each of the forwarding nodes, and transmits to the forwarding nodes a tunnel establishing message including a processing rule for forwarding the control information to be set in the forwarding nodes in each of the forwarding paths. The respective forwarding nodes give and receive control information with regard to the control apparatus, by holding processing rules for forwarding the control information included in the tunnel establishing message. |
