Scaling BFD sessions for neighbors using physical / sub-interface relationships
US8289839B2 · kind B2 · utility
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14References
19Claims
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Key dates
| Filing date | Jul 5, 2007 |
| Grant date | Oct 16, 2012 |
| Priority date | — |
| Expiry date | Oct 1, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L41/0631
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, an apparatus includes a physical port and a plurality of logical sub-interfaces under the physical port. The physical port and the logical sub-interfaces are configured as a Bidirectional Forwarding Detection (BFD) neighbor group. The physical port being configured to run BFD sessions to detect failures at a first rate that is substantially faster as compared to a second rate of BFD sessions to detect failures on the logical sub-interfaces. The physical port notifies the logical sub-interfaces of a BFD failure at the physical port, with the logical sub-interfaces shutting down responsive to the notification.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.