Stateful flow information table method and system for packet inspection system
US8463901B2 · kind B2 · utility
10Cited by
7References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 28, 2010 |
| Grant date | Jun 11, 2013 |
| Priority date | — |
| Expiry date | Feb 8, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L63/1458
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A packet processing system comprises two packet inspection systems for tracking packet flows between a first network and a second network. A memory is accessible by each of the packet inspection systems for storing flow entries. Each of the flow entries includes a flow key characterizing a packet flow associated with flow entry, a flow identifier. State information is further maintained indicating ownership of the flow identifiers among the two packet inspection systems. Using stateful identifiers ensures that two packet processing systems do not become incoherent and properly indicate the status of free flow identifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.