ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,771,642, issued on Oct. 20, was assigned to Cisco Technology Inc. (San Jose, Calif.).

"Encrypted tunnel migration" was invented by Grzegorz Boguslaw Duraj (Vancouver, Canada), Leonardo Rangel Augusto (Burnaby, Canada) and Kyle Andrew Donald Mestery (Woodbury, Minn.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Techniques for load balancing encrypted traffic based on security parameter index (SPI) values of packet headers and sets of 5-tuple values of the packet headers are described herein. Additionally, techniques for including quality of service (QOS)-type information in SPI value fields of packet headers are also described herein. The QoS-type infor...