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:
Jul. 08, 2025

Filed:

Sep. 17, 2020
Applicant:

Telefonaktiebolaget Lm Ericsson (Publ), Stockholm, SE;

Inventors:

Jiang He, Beijing, CN;

Zhe Zhou, Beijing, CN;

Xianmin Li, Beijing, CN;

Haifeng Qu, Beijing, CN;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H04L 45/28 (2022.01); H04L 45/02 (2022.01); H04L 45/18 (2022.01); H04L 45/50 (2022.01); H04L 12/46 (2006.01); H04L 45/00 (2022.01);
U.S. Cl.
CPC ...
H04L 45/28 (2013.01); H04L 45/04 (2013.01); H04L 45/18 (2013.01); H04L 45/50 (2013.01); H04L 12/4641 (2013.01); H04L 45/22 (2013.01);
Abstract

A method by a network device functioning as a provider edge (PE) in an ethernet virtual private network (EVPN) to prevent transient loops between multi-home peer PEs. The method includes advertising a first EVPN label to one or more PEs that are multi-home peer PEs of the PE, advertising a second EVPN label to one or more PEs that are not multi-home peer PEs of the PE, receiving first traffic for a CE that is encapsulated with the first EVPN label as opposed to the second EVPN label, and discarding the first traffic in response to determining that a link between the PE and the CE is not operational and the first traffic for the CE is encapsulated with the first EVPN label.


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