Protecting multi-segment pseudowires
US8081563B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 2006 |
| Grant date | Dec 20, 2011 |
| Priority date | — |
| Expiry date | Jun 13, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/68
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The protection of multi-segment pseudowires by utilizing pre-computed backup paths is disclosed herein. Disclosed embodiments include methods that establish at least one backup path for multi-segment pseudowires, the establishing being performed prior to detection of failure in the primary path. Upon detecting a path failure, the detected failure is signaled to the head-end, a pre-computed backup path is chosen, and the chosen backup path is signaled to the tail-end. In other disclosed embodiments, apparatus are configured to establish, prior to detection of failure in the primary path, at least one backup path for the multi-segment pseudowire. Networks can be configured to signal a detected failure to the head-end; choose a pre-computed backup path; and signal the backup path to the tail-end.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.