VLAN server
US7420979B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 26, 2004 |
| Grant date | Sep 2, 2008 |
| Priority date | — |
| Expiry date | Jun 9, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/4645
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
One physical VLAN server provides a plurality of VLANs with services. VLANs #1 to #3 are connected to the VLAN server though a switching hub. The VLAN server includes server processes #1 to #3 corresponding to the VLANs #1 to #3, respectively, for providing the VLANs with services. The server processes #1 to #3 each have internal IP addresses N1, N2, and N3. The VLAN server has external IP addresses G1, G2, and G3 for the VLANs #1 to #3, respectively. When a client #1-1 on the VLAN #1 issues data to the VLAN server with the destination IP address being set to G1, a receiving-VLAN-tag-NAT processing section of a device driver in the VLAN server changes the destination IP address from G1 to N1 with the use of a VLAN tag V1, and the server process #1 receives the data
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.