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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.:

US 12255976 B1

PDFFull Text
Date of Patent:
Mar. 18, 2025

Filed:

Jul. 27, 2023

Ethernet virtual private network using segment routing

Applicant:

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

Inventors:

Patrice Brissette, Gatineau, CA;

Clarence Filsfils, Brussels, BE;

Darren Dukes, Ottawa, CA;

Gaurav Dawra, San Jose, CA (US);

Francois Clad, Strasbourg, FR;

Pablo Camarillo Garvia, Madrid, ES;

Assignee:

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

Attorney:

Polsinelli P.C.

Primary Examiner:

Jason E Mattis

Int. Cl.
CPC ...
H04L 69/22 (2022.01); H04L 12/46 (2006.01); H04L 45/00 (2022.01); H04L 45/02 (2022.01); H04L 45/50 (2022.01); H04L 45/74 (2022.01); H04L 45/741 (2022.01); H04L 49/35 (2022.01); H04L 61/5007 (2022.01); H04L 67/10 (2022.01); H04L 67/63 (2022.01); H04L 69/324 (2022.01); H04L 9/40 (2022.01); H04L 43/028 (2022.01); H04L 45/745 (2022.01); H04L 61/2503 (2022.01); H04L 101/00 (2022.01); H04L 101/659 (2022.01);
U.S. Cl.
CPC ...
H04L 69/22 (2013.01); H04L 12/4633 (2013.01); H04L 12/4641 (2013.01); H04L 45/04 (2013.01); H04L 45/14 (2013.01); H04L 45/34 (2013.01); H04L 45/50 (2013.01); H04L 45/74 (2013.01); H04L 45/741 (2013.01); H04L 49/35 (2013.01); H04L 61/5007 (2022.05); H04L 67/10 (2013.01); H04L 67/63 (2022.05); H04L 69/324 (2013.01); H04L 43/028 (2013.01); H04L 45/745 (2013.01); H04L 61/2503 (2013.01); H04L 63/0272 (2013.01); H04L 2101/00 (2022.05); H04L 2101/659 (2022.05); H04L 2212/00 (2013.01);
Abstract

In one embodiment, Ethernet Virtual Private Network (EVPN) is implemented using Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) underlay network and SRv6-enhanced Border Gateway Protocol (BGP) signaling. A particular route associated with a particular Internet Protocol Version 6 (IPv6) Segment Routing (SRv6) Segment Identifier (SID) is advertised in a particular route advertisement message of a routing protocol (e.g., BGP). The SID includes encoding representing a particular Ethernet Virtual Private Network (EVPN) Layer 2 (L2) flooding Segment Routing end function of the particular router and a particular Ethernet Segment Identifier (ESI), with the particular SID including a routable prefix to the particular router. The particular router receives a particular packet including the particular SID; and in response, the particular router performs the particular EVPN end function on the particular packet.

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