Optimizing fault synchronization in a bidirectional data network
US9485171B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 30, 2013 |
| Grant date | Nov 1, 2016 |
| Priority date | — |
| Expiry date | Feb 6, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for optimizing fault synchronization in a bidirectional data network are provided. In an example, a downstream endpoint of the data network receives a first Alarm Indication Signal (AIS). The first AIS indicates a first FLI of an upstream interface having an interface fault. The downstream endpoint transmits, to an upstream endpoint of the data network, a second AIS including a Remote Defect Indication (RDI) and a second FLI identifying the downstream endpoint. An upstream endpoint of the data network receives the second AIS and determines that the AIS is an AIS-RDI (AIS-RDI) from the presence of the second FLI. The presence of the AIS-RDI triggers the upstream endpoint to initiate tunnel failure synchronization with the downstream endpoint.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.