System and method for measurement of flow statistics
US9692705B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 6, 2013 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Jun 1, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/54
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Overlapping flow rules are included in a ternary content addressable memory (TCAM), while still enabling a hardware counter to increment each of the overlapping rules when a packet matching each of the overlapping rules is transmitted through the TCAM. In a given set of flow specifications, a first flow specification is identified that overlaps with a second flow specification. Rules are determined corresponding to the first flow specification, the second flow specification, and an intersection of the first and second flow specifications. Priorities are assigned to each of the rules, wherein the rule corresponding to the intersection is assigned a higher priority than the rules corresponding to the first and second flow specifications. Such rules are stored in the TCAM.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.