Distinguishing between link and node failure to facilitate fast reroute
US7986618B2 · kind B2 · utility
8Cited by
7References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 12, 2002 |
| Grant date | Jul 26, 2011 |
| Priority date | — |
| Expiry date | Apr 12, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/50
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Systems and methods for distinguishing a node failure from a link failure are provided. By strengthening the assumption of independent failures, bandwidth sharing among backup tunnels protecting links and nodes of a network is facilitated as well as distributed computation of backup tunnel placement. Thus a backup tunnel overlay network can provide guaranteed bandwidth in the event of a failure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.