Trace routing in virtual networks
US10904123B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 31, 2019 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | May 31, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L45/586
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A route tracing request packet is generated comprising a time-to-live value, a source address of a source of the route tracing request packet, and an address of a destination of the route tracing request packet. The source and destination are in the virtual network; the route tracing request packet is usable to identify the virtual appliance, and the virtual appliance is configured to examine the route tracing request packet for a time-to-live value indicating that the route tracing request packet has expired and sending a time-to-live exceeded message to the source address. The time-to-live exceeded message comprises an identifier for the virtual appliance. The route tracing request packet is forwarded to the destination. The time-to-live exceeded message is received. Data is extracted to determine network virtual appliances that were traversed by the route tracing request packet prior to expiration of the time-to-live. The network virtual appliances are reported.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.