GRE tunneling with reduced packet encryption at intermediate routers using loose source routing
US11323361B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 28, 2020 |
| Grant date | May 3, 2022 |
| Priority date | — |
| Expiry date | Sep 28, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L69/22
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A network node may receive a packet having an inner internet protocol (IP) header and an outer IP header. The inner IP header may be encrypted. A loose source routing (LSR) field of the outer IP header may identify a recipient address. The network node may determine, based on the recipient address identified in the LSR field, a tunnel endpoint associated with a receiving network node. The network node may update the outer IP header of the packet to obtain an updated packet with an updated outer IP header. A source address of the updated outer IP header may be updated to a tunnel endpoint associated with the network node, and the destination address of the updated outer IP header may be updated to a tunnel endpoint associated with the receiving network node. The network node may route the updated packet according to the updated outer IP header.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.