Methods and apparatus for switching between Metro Ethernet networks and external networks
US7633937B2 · kind B2 · utility
0Cited by
5References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 19, 2003 |
| Grant date | Dec 15, 2009 |
| Priority date | — |
| Expiry date | Jan 2, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/354
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
According to the present invention, methods and apparatus are provided to allow efficient switching of frames for transmission between a Layer 2 Virtual Local Area Network such as a Metro Ethernet Network and an external network. Reserved inner tags are used to identify particular services. In one example, inner tags allow mapping of frames associated with a particular subnetwork onto a particular virtual circuit associated with an ATM network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.