Hierarchical control in software-defined network (SDN)
US9197569B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 6, 2013 |
| Grant date | Nov 24, 2015 |
| Priority date | — |
| Expiry date | Jun 10, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/64
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
System and method of providing SDN network service management by use of a distributed control system that comprises a hierarchy of controllers. The distributed control system includes regional controllers and one or more root controllers. A respective regional controller is configured to control a set of network devices and maintain regional network map related thereto. A respective root controller is configured to control a group of regional controllers and maintain a global network map across regions of the SDN. The root controllers can synchronize the global network map with each other and its subordinate controllers. A root controller may not be activated for packet transmission route determination unless its subordinate regional controller is unequipped with sufficient information to determine a requested route.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.