Method for conducting redundancy checks in a chain network
US8184527B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 2009 |
| Grant date | May 22, 2012 |
| Priority date | — |
| Expiry date | Sep 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L12/40169
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a method for conducting redundancy checks in a chain network, wherein the two ends of the chain network are equipped with a first switch and a second switch respectively, and a port of the first or second switch used for communicating with an external network is set to be blocked, so that when an link failure happens to any switch of the chain network, the two switches close to the link failure port sends control packets to the first and second switches respectively to forward the port that is originally blocking, thus making the network to return to normal state quickly. Besides, as the first and second switches are used to connect other chain networks, external network devices or external redundant network architectures, it allows more network nodes to be included in single network architecture and provides flexibility and compatibility in use by including different redundancy mechanisms.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.