System and method for using active and standby routers wherein both routers have the same ID even before a failure occurs
US6490246B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 6, 2000 |
| Grant date | Dec 3, 2002 |
| Priority date | — |
| Expiry date | Jan 6, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/40
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A multiplex router device, having a multiplex configuration, is instrumental in reducing internal and external traffic flows for a routing protocol process that occurs at a time of system switchover. A data base integration module, in a route calculation unit in the active mode, stores network link-state information collected by a routing protocol packet transmission-reception module in a link-state data base, and at the same time sends the information to a route calculation unit, but does not send routing protocol information collected. In the route calculation unit in the standby mode, a data base integration module that received the network link-state information stores its contents into its own link-state data base. When a failure occurs in the route calculation unit in the active mode, the route calculation unit performs the routing protocol process by using the stored link-state data base.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.