Piggybacking VPN information in BGP for network based VPN architectures
US7274704B1 · kind B1 · utility
28Cited by
2References
22Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 12, 2001 |
| Grant date | Sep 25, 2007 |
| Priority date | — |
| Expiry date | Dec 1, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/4641
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A common BGP framework is provided to achieve VPN information discovery in network based VPNs using modifications to existing BGP-4 multiprotocol extension path attributes. The framework allow each VPN to implement different OSI layer-2 or layer-3 protocols, and to implement different OSI layer-2 or layer-3 protocols from those used by the backbone of the shared network. The extensions added to BGP-4 apply both to Virtual Router (VR) models of VPN systems and to non-VR models.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.