| 摘要 |
With existing technology, inner tag information (VLAN ID information before being subjected to QinQ at the entrance to an openflow network (OF-NW)) attached to packets flowing through the OF-NW cannot be identified by a switch. Accordingly, an OF-NW configured by only one VLAN cannot deal with a plurality of VLANs. In the present invention, specifically, a controller deals with a plurality of VLANs in the OF-NW having only one VLAN, by mapping inner tag information attached to packets flowing through the OF-NW and flow cookie information indicating flow entries corresponding to the packets flowing through the OF-NW. More specifically, a flow entering the OF-NW is transferred from the switch to the controller, and the controller which receives the transferred flow learns the VLAN ID information at the entrance to the OF-NW, and maps the VLAN ID and the flow cookie information indicating flow entries corresponding to the packets in the OF-NW, to thereby deal with a plurality of VLANs. |
