N+1 protection using a processor-based protection device
US8059526B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 12, 2009 |
| Grant date | Nov 15, 2011 |
| Priority date | — |
| Expiry date | Dec 29, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/28
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In an N+1 protection scheme for a router in a data or telecommunications network, a processor-based protection unit has a replica device handle, corresponding to each of the N working units, stored in the protection unit's local memory. Each replica device handle is an image of the connections provided by the corresponding working unit. In one implementation, upon detection of a failure of one of the working units, the router's controller unit sends a single command to instruct the protection unit to reconfigure itself using the corresponding locally stored replica device handle to assume the routing functions of the failed working unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.