Loop detection in virtual extensible local area network overlay
US12132588B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 18, 2022 |
| Grant date | Oct 29, 2024 |
| Priority date | — |
| Expiry date | Jul 18, 2043 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/645
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In an example, a network switch is to receive a loop detect packet from an access netwssork connected to a Data center network (DCN). The DCN includes a VXLAN overlay and the network switch is configured as a VTEP. The network switch compares the VNI of a source VTEP from which the loop detect packet originates with a locally configured VNI. In response to a match, it is determined that the network switch is configured as a peer VTEP. Import RT in the loop detect packet is compared with an export RT of the peer VTEP and the export RT in the loop detect packet is compared with an import RT of the peer VTEP. Based on the comparison, it is determined whether a VXLAN tunnel is configured between the peer and the source VTEPs. In response to the VXLAN tunnel being configured, the switch may determine that a network loop is present.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.