Fast convergence on link failure in multi-homed Ethernet virtual private networks
US9787573B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 31, 2014 |
| Grant date | Oct 10, 2017 |
| Priority date | — |
| Expiry date | Mar 15, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/245
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Techniques are described for providing fast convergence in the event of a link failure in an all-active multi-homed Ethernet virtual private network. A provide edge (PE) network device may pre-configure an interface next hop and secondary next hops. The secondary next hops may be logical links to other PE network devices in the same Ethernet segment. In the event of a link failure in the interface next hop between the PE network device and a customer edge (CE) network device, the PE network device may be configured to forward data traffic to the CE network device using the secondary next hops. In the event of a link failure between the PE network device and a core network, the PE network device may be configured to send an out-of-service message to the CE network device that instructs the CE network device to stop sending traffic to the PE network device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.