Transient loop prevention in ethernet virtual private network egress fast reroute
US12355660B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 17, 2020 |
| Grant date | Jul 8, 2025 |
| Priority date | — |
| Expiry date | Aug 19, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/507
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A method by a network device functioning as a provider edge (PE) in an ethernet virtual private network (EVPN) to prevent transient loops between multi-home peer PEs. The method includes advertising a first EVPN label to one or more PEs that are multi-home peer PEs of the PE, advertising a second EVPN label to one or more PEs that are not multi-home peer PEs of the PE, receiving first traffic for a CE that is encapsulated with the first EVPN label as opposed to the second EVPN label, and discarding the first traffic in response to determining that a link between the PE and the CE is not operational and the first traffic for the CE is encapsulated with the first EVPN label.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.