Method of detecting large flows within a switch fabric of an SDN switch
US9729442B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 1, 2015 |
| Grant date | Aug 8, 2017 |
| Priority date | — |
| Expiry date | Feb 8, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/35
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method of Software-Defined Networking (SDN) switching. A packet of a flow is received onto a SDN switch via a NFX circuit. The NFX circuit determines that the packet matches a flow entry stored in any flow table in the NFX circuit, counts the number of packets of the flow received, and determines that the number of packets of the flow received is above a threshold value. The NFX circuit then forwards the packet to a NFP circuit in the SDN switch. The NFP circuit determines that the packet matches a flow entry stored in the flow table in the NFX and generates a new flow entry that applies to a relatively narrow subflow of packets that is forwarded to and stored the flow table in the NFX circuit. A subsequent packet of the flow is switched by the SDN switch without forwarding the packet to the NFP.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.