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:
May. 03, 2022

Filed:

Nov. 25, 2020
Applicant:

Level 3 Communications, Llc, Broomfield, CO (US);

Inventors:

William Hopkins, Brighton, CO (US);

Joelle T. Maslak, Golden, CO (US);

Assignee:

Level 3 Communications, LLC, Broomfield, CO (US);

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 61/4511 (2022.01); H04L 67/63 (2022.01); H04L 67/1021 (2022.01); H04L 101/69 (2022.01);
U.S. Cl.
CPC ...
H04L 61/1511 (2013.01); H04L 67/1021 (2013.01); H04L 67/327 (2013.01); H04L 61/609 (2013.01);
Abstract

A method of generating a routing table containing information as to the weighted distance between client's that use a resolver and each rack gateway, taking into account how traffic to each client can egress from the CDN AS. The routing table is generated from matrix multiplication of two matrices. One matrix contains information as to the proportion of each client's use of each resolver in a first autonomous system. The second matrix contains information as to the distance between each client and each rack, with respect to an egress gateway, in a second autonomous system. The resulting routing table is used to identify a gateway from which to serve content to a client.


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