Method to check health of automatically discovered controllers in software defined networks (SDNs)
US9667524B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 2015 |
| Grant date | May 30, 2017 |
| Priority date | — |
| Expiry date | Jul 9, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/15
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method to check health of automatically discovered controllers comprises the steps of: (a) a first controller generating a first Controller-Advertisement message carrying the information required to identify and access the first controller when a new switch port becomes active; (b) the first controller sending the generated first Controller-Advertisement to a first switch having the newly activated port; (c) the first controller receiving at least a second Controller-Advertisement message from at least a second controller; (d) the first controller generating a third unsolicited Controller-Advertisement message with its access information to check health of the second controller; (e) the first controller receiving at least a fourth Controller-Advertisement message from the second controller indicating health information of the second controller, wherein the health information is stored in first controller's Controller Information Base (CIB).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.