Systems and methods for modifying network packets to use unrecognized headers/fields for packet classification and forwarding
US8842672B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 28, 2012 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Jun 15, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/16
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods are disclosed for modifying network packets to use unrecognized headers/fields for packet classification and forwarding in packet processing systems, such as network tool optimizer (NTO) devices. The packet modifications described allow standard switch or routing integrated circuits (ICs) to process, classify, and forward packets based upon data that is not typically recognized by the hardware capabilities of the standard packet routing circuitry for packet processing. Input packets are modified so that unrecognized data becomes recognized data for purposes of packet processing, classification, and forwarding by the packet routing circuitry. These modifications are then removed after packets are processed to reform the original packets. The original packets are then provided to destination devices based upon packet classification and forwarding control information. As such, packet processing, classification, and forwarding is provided in packet processing systems using headers/fields that are not supported for processing by standard switch or routing integrated circuits (ICs).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.