Method and apparatus for accelerating forwarding in software-defined networks
US9071529B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 8, 2012 |
| Grant date | Jun 30, 2015 |
| Priority date | — |
| Expiry date | Jun 13, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/64
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network element acting as a forwarding plane within a software-defined network to reduce negative effects of slow-path packet processing is described. The network element, upon receiving a first packet, determines whether it matches any flow entry within a set of flow tables. When the first packet does not match any flow entry of the set of flow tables, the network element performs a miss procedure including inserting at least a portion of the first packet into a packet miss table of the network element, which is accessed by a controller. The controller may access the packet miss table using a pull mechanism. The miss procedure may also include accessing a configurable default rule table of the network element, which includes rules enabling limited forwarding for those packets that do not match any entry of the set of flow tables.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.