Method for rerouting a data stream
US5590118A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 23, 1995 |
| Grant date | Dec 31, 1996 |
| Priority date | — |
| Expiry date | Aug 23, 2015 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04Q2213/13167
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method is described for rerouting a data stream previously routed via a route through a switching network which has now failed. The method includes the steps of detecting the failure on a link (L19) between first (SN1) and second (SN9) switching nodes in one of these switching nodes (SN1); transmitting from this one switching node (SN1) a request message (REQ) with first (IDA) and second (IDB) address fields containing addresses of the first (1) and second (9) switching nodes, respectively; in each switching node having received the request message (REQ) retransmitting it, until an alternative route for the data stream is found between two end switching nodes of said alternative route; and by one of these end switching nodes (SN1) chosen according to a predetermined rule after the alternative route has been found, allocating the data stream to this alternative route and transmitting it thereon.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.