Selective protection for ring topologies
US6892329B2 · kind B2 · utility
14Cited by
5References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 3, 2001 |
| Grant date | May 10, 2005 |
| Priority date | — |
| Expiry date | Feb 11, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/437
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method for fault protection in a bidirectional ring network includes transmitting first and second flows of packets around the bidirectional ring network while defining the first flow as a wrapping flow and the second flow as a non-wrapping flow. Upon detection by a node in the network that a segment of the network proximal to the node has failed, the packets in the first flow are wrapped at the node between clockwise and counterclockwise directions on the network so as to avoid the failed segment, while the packets in the second flow are not wrapped.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.