Core router capable of securing the output router of an autonomous system
US8223629B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 25, 2007 |
| Grant date | Jul 17, 2012 |
| Priority date | — |
| Expiry date | Mar 20, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A core router adapted to back up a nominal output router. This kind of core router of a first autonomous subsystem is connected to a nominal output router of the first autonomous system adapted to route traffic whose destination is a second autonomous system, the first autonomous system further including a back-up output router adapted to route traffic whose destination is the second autonomous system. The core router includes means for identifying a router of the first autonomous system, adapted to identify a router adapted to route traffic whose destination is the second autonomous system in the event of a failure affecting traffic to said nominal output router, the identified router being either the back-up output router or a protector router of the first autonomous system, this protector router being adapted to redirect traffic whose destination is the second autonomous system via said back-up output router; means for detecting a failure affecting routing of traffic to said nominal output router; and means for redirecting traffic whose destination is the second autonomous system in a predetermined route in a tunnel to the identified router, said tunnel not passing through the n…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.