The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 06, 2026
Filed:
Nov. 15, 2022
Cisco Technology, Inc., San Jose, CA (US);
Eric Levy- Abegnoli, Valbonne, FR;
Pascal Thubert, Roquefort les Pins, FR;
Cisco Technology, Inc., San Jose, CA (US);
Abstract
Disclosed herein are systems, methods, and computer-readable media for forwarding packets between parallel IPv4 networks that includes encapsulating an IP packet to include an outer header and an inner header. The IP packet is routed to a shaft spanning a subset of addresses within the source realm. Upon reaching the shaft in the source realm, a first swap of the inner header and the outer header of the IP packet is performed. The IP packet is forwarded inside the shaft from the source realm to the destination realm. Upon reaching the destination realm, a second swap of the inner header and the outer header of the IP packet is performed. The IP packet is forwarded in the destination realm to the destination node.