Robust fast re-routing for label switching packets
US10044603B1 · kind B1 · utility
8Cited by
2References
20Claims
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Key dates
| Filing date | Mar 30, 2016 |
| Grant date | Aug 7, 2018 |
| Priority date | — |
| Expiry date | Jun 22, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L49/602
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A fast reroute (FRR) implementation utilizes an optimized FRR table to implement a fast switchover to a backup link upon detecting a primary link failure on a label switched path (LSP). The switchover can be performed in a negligible amount of time (close to zero milliseconds) based on a backup indicator flag which can be dynamically updated. The FRR table stores pre-determined backup egress interfaces and FRR labels corresponding to primary egress interfaces to minimize the switchover time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.