Management of redundant addresses in standby systems
US8510402B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 20, 2008 |
| Grant date | Aug 13, 2013 |
| Priority date | — |
| Expiry date | Jul 6, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L61/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Aspects of the invention provide apparatuses, systems, and computer readable media for supporting redundant network management. When the primary device (101, 103) fails, its Ethernet IP address is transferred or controlled by a backup Ethernet device. System information is provided to a network adapter so that programmable logic controllers are in agreement about the mode of operation. A central processing unit (201, 203) determines a calculated mode of operation from the operational statuses of the programmable logic controller and the mated programmable logic controller. The central processing unit provides an address indication (503) based on the calculated mode of operation and a selection indication (501) that is indicative of a selected address criterion. The corresponding network adapter determines the assigned network address from the selection indication and the address indication.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.