| 摘要 |
Disclosed are methods and system for accessing a virtual network (VN). One method comprises: a BN-NVE accepting an access of a broadband user terminal to the VN in a data center, generating a VN forward table and entries corresponding thereto; the BN-NVE and an NVE of the VN accessed exchanging information on the forward table, forming information synchronization of the VN forward table; the BN-NVE searching the VN forward table on the basis of a destination address of a packet of the broadband user terminal, and packaging the packet via a tunnel then forwarding to a destination NVE in the VN, forwarding to a destination VM via the destination NVE, and completing the access of the broadband user terminal to the VN. Another method comprises: a VN service launching and management entity in the data center accepting a request of the broadband user terminal for accessing the VN in the data center, selecting one NVE of the VN to serve as an access NVE of the VN; the access NVE of the VN establishing a secure tunnel to the broadband user terminal, and completing the access of the broadband user terminal to the VN via the secure tunnel. The present invention solves the problem that a gateway of the data center becomes a bottleneck when Internet users access the VN in the data center. |
