Packet classification device for storing groups of rules
US7933282B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 5, 2007 |
| Grant date | Apr 26, 2011 |
| Priority date | — |
| Expiry date | Jun 6, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F16/90339
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A packet classification device includes a CAM device, an SRAM device, and a control circuit that controls and coordinates the operations of the CAM and SRAM devices. For some embodiments, a first CAM block stores unique entries for each packet header field, a RAM block coupled to the first CAM block stores field labels for the unique packet header fields, a second CAM block stores group labels consisting of unique combinations of concatenated field labels, and a second RAM block coupled to the second CAM block stores a group identification (ID) for each group label, wherein each group ID identifies a corresponding one of the groups of rules.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.