Hardware-friendly mechanisms for in-band OAM processing
US10904152B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 20, 2019 |
| Grant date | Jan 26, 2021 |
| Priority date | — |
| Expiry date | Mar 20, 2039 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W28/0284
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
In one illustrative example, a network node (e.g. a router or switch) may receive a data packet and timestamp a copy of the data packet. The node may also compute a signature for the copy and insert the signature in a header of the copy. The node may send the copy to a controller for correlation with one or more other timestamped data packet copies of the data packet from one or more other network nodes having the same signature and for the computation of delay. The original data packet may be forwarded to a next network node without any timestamp or other metadata added to it. The processing of the data packets may be performed as part of a function for punting the timestamped data packet copy and forwarding, or as a function for forwarding and punting the timestamped data packet copy.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.