Patent · US Active

Internet protocol security and security parameter index summarization and data routing

US12375463B2 · kind B2 · utility

0Cited by

2References

20Claims

0Family size

Assignee

Cisco Technology, Inc. · US

Inventors

William Mark Townsley · Nashville, US
Edward A. Warnicke · Austin, US
Jerome Tollet · Paris, FR
Aloys Augustin · Versailles, FR
Andrew Yourtchenko · Blegny, BE
Giles Douglas Yorke Heron · London, GB

Key dates

Filing date	Apr 26, 2023
Grant date	Jul 29, 2025
Priority date	—
Expiry date	Jan 31, 2044

Classification

Technology area (CPC H)Electricity
CPC primaryH04L63/164
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

Techniques for routing Internet Protocol security (IPsec) data packets. An index is assigned to a Security Parameter Index (SPI) header of the IPsec data packet. The index includes information for routing the data packet to a particular Encapsulating Security Payload (ESP) processor. The data packet can be routed using techniques that are analogous to conventional routing protocols such as IPv4 routing protocol. This allows the data packet to be routed using less expensive routing protocols rather than relying solely on more expensive load balancing techniques to route the data packet. This also advantageously allows the data packet to be routed employing routing techniques developed over decades of routing protocol development.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.