Inter-ring protection for shared packet rings
US7602706B1 · kind B1 · utility
9Cited by
8References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2003 |
| Grant date | Oct 13, 2009 |
| Priority date | — |
| Expiry date | Oct 15, 2025 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/4637
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for providing inter-ring protection in shared packet rings includes identifying an active node which is connected to a ring interconnect node on the same ring as the active node and connected to a peer node on a different ring with a ring interconnecting link. When the active node is in active mode and receives notification of a failure of the ring interconnecting link or peer node, the active node sends a message to the ring interconnect node so that the ring interconnect node switches from standby mode to active mode. The active node is then changed to standby mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.