Traceroute for overlays using dynamic filters
US11405298B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 11, 2020 |
| Grant date | Aug 2, 2022 |
| Priority date | — |
| Expiry date | Oct 22, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L2101/622
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
The disclosure describes processing packets in connection with a traceroute session in an overlay network that includes detecting traceroute probes using static and dynamic rules and using the time to live (TTL) value in a received traceroute probe to compute an outer TTL value. The TTL value (inner TTL) of the received probe is updated based on the number of underlay routers (hops) comprising the underlay network that are detected during the traceroute session. The received probe with its updated TTL value is encapsulated in an outer frame that includes the computed outer TTL value. The number of hops is updated each time an underlay router sends an ICMP time exceeded message.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.