Method of operating a network
US7978615B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2007 |
| Grant date | Jul 12, 2011 |
| Priority date | — |
| Expiry date | Apr 30, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/52
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques are provided for operating a network where router devices forward received data packets towards a destination node. Each router maintains a routing table, indicating the next hop to choose in respect of different ultimate destinations m accordance with a routing protocol. Periodic communications between neighboring routers are used as confirmation that they are still able to communicate with one another. Each router compares the time since it last communicated in this way with each of its neighbors with a router dead interval and determines that the respective neighboring router, or the currently designated route thereto, has gone down if the comparison indicates that the router dead interval has elapsed without such a communication having been received. Each router performs an adaptive algorithm to modify the or each corresponding router dead interval dynamically in accordance with one or more properties of the network as measured by the router.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.