VPN composing method, interwork router, packet communication method, data communication apparatus, and packet relaying apparatus
US6633571B1 · kind B1 · utility
87Cited by
8References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 1999 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Sep 9, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/4641
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method serves to compose a VPN (Virtual Private Network) over a plurality networks each of which is managed by different Internet Service Providers (ISP). When a packet with a first capsule header used for composing a VPN in a first ISP network is transmitted to a second ISP network, a route for outputting packet to the second ISP network is determined based on the information both in the capsule header and in the IP header. In addition, a second capsule header used for composing a VPN in the second ISP network is determined based on the above information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.