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.

Date of Patent:
Sep. 17, 2024

Filed:

Nov. 09, 2021
Applicant:

Cisco Technology, Inc., San Jose, CA (US);

Inventors:

Ahmed Refaat Bashandy, Milpitas, CA (US);

Clarence Filsfils, Brussels, BE;

Assignee:

Cisco Technology, Inc., San Jose, CA (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 45/74 (2022.01); H04L 101/604 (2022.01); H04L 101/659 (2022.01); H04L 101/672 (2022.01);
U.S. Cl.
CPC ...
H04L 45/74 (2013.01); H04L 2101/604 (2022.05); H04L 2101/659 (2022.05); H04L 2101/672 (2022.05);
Abstract

In one embodiment, packets are forwarded in a network based on multiple compact forwarding identifiers represented in a single 128-bit Internet Protocol Version 6 (IPv6) address, such as, but not limited to being in the destination address field of the IPv6 header (e.g., possibly in an extended IPv6 header). One embodiment follows the forwarding order of these multiple compact forwarding identifiers by respectively placing them in the single IPv6 address from high-order to lower-order bit positions. In one embodiment, a compact forwarding identifier prefix is part of the address represented by each compact forwarding identifier, typically with the compact forwarding identifier prefix stored in the highest-order bit positions. One embodiment uses a longest prefix matching operation to match the compact forwarding identifier to be used in determining how to next process the packet.


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