Method and apparatus for filtering ethernet frames
US6381648B1 · kind B1 · utility
6Cited by
3References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 6, 1999 |
| Grant date | Apr 30, 2002 |
| Priority date | — |
| Expiry date | May 6, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/413
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Within a communication node, low level hardware is programmed and provided with filter data to accept broadcast frames. A high level layer of hardware, utilizing the pre-loaded, pre-defined comparison data, checks incoming frame header information. Based on pre-defined filter data or reference values loaded into low level registers, the high-level hardware will reject or accept submitted data communication frames. This method reduces the requirement for software to operate on each incoming frame header, thus reducing load on the processor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.