Multi-homing using controlled route leakage at a backup service provider
US7953103B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Nov 24, 2009 |
| Grant date | May 31, 2011 |
| Priority date | — |
| Expiry date | Nov 24, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/033
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one embodiment, a network node of a secondary network receives a message from a multi-homed network. The message includes a block of network addresses allocated to the multi-homed network. It is determined that a primary network has advertised an aggregated route including the multi-homed network's allocated block of network addresses. Advertisements of the multi-homed network's allocated block of network addresses are suppressed, after a determination that the primary network has advertised an aggregated route including the multi-homed network's allocated block of network addresses. It may be later be determined that the multi-homed network has lost network connectivity via the primary network. Advertisements of the multi-homed network's allocated block of network addresses are unsuppressed, after a determination that the multi-homed network has lost network connectivity via the primary network.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.