Graceful shutdown of network resources in data networks
US7457248B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 2004 |
| Grant date | Nov 25, 2008 |
| Priority date | — |
| Expiry date | Nov 25, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W48/08
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A technique gracefully shuts down network resources, such as nodes, interfaces and protocols, in a data network in a manner that minimizes network disruption. The technique may be used with both connectionless and connection-oriented networking systems. A node gracefully shuts down a network resource associated with the node by i) notifying other nodes in the network that the resource is being gracefully shutdown, ii) waiting for a condition to occur, and iii) when the condition occurs, shutting down the resource. The condition may include the expiration of a predetermined amount of time and/or monitoring the resource to determine if the resource has reached a certain level of activity. In response to receiving a notification that a resource is being gracefully shutdown, a node takes action to reroute traffic around the resource. If no alternative route is available, the node may continue to route traffic to the resource until it is shut down.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.