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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 10116738 B1

PDFFull Text
Date of Patent:
Oct. 30, 2018

Filed:

Nov. 30, 2015

Detecting anomalous conditions in a name server network

Applicant:

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

Inventors:

Paul E. Stolorz, Los Altos, CA (US);

John K. Salmon, Chappaqua, NY (US);

Michael S. Warren, Santa Fe, NM (US);

Jeffrey G. Koller, Oxnard, CA (US);

Aric Hagberg, Santa Fe, NM (US);

Maksim Yevmenkin, Thousand Oaks, CA (US);

Mark Brady, Thousand Oaks, CA (US);

David Pfitzner, College Park, AU;

Ted Middleton, Moorpark, CA (US);

Assignee:

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

Attorney:
Primary Examiner:

John B Walsh

Int. Cl.
CPC ...
G06F 15/173 (2006.01); H04L 29/08 (2006.01); H04L 29/06 (2006.01); H04L 29/12 (2006.01); H04L 12/24 (2006.01); H04L 12/26 (2006.01); H04W 4/02 (2018.01); H04W 4/021 (2018.01); H04W 4/20 (2018.01);
U.S. Cl.
CPC ...
H04L 67/1034 (2013.01); H04L 29/06 (2013.01); H04L 29/12066 (2013.01); H04L 29/12783 (2013.01); H04L 41/069 (2013.01); H04L 41/0631 (2013.01); H04L 41/0893 (2013.01); H04L 41/22 (2013.01); H04L 43/00 (2013.01); H04L 43/04 (2013.01); H04L 61/1511 (2013.01); H04L 61/35 (2013.01); H04L 67/1002 (2013.01); H04L 67/1008 (2013.01); H04L 67/1021 (2013.01); H04L 67/1023 (2013.01); H04L 67/1029 (2013.01); H04L 67/1036 (2013.01); H04L 67/18 (2013.01); H04L 67/26 (2013.01); H04W 4/02 (2013.01); H04W 4/021 (2013.01); H04W 4/20 (2013.01); H04L 43/045 (2013.01); H04L 43/06 (2013.01); H04L 43/0811 (2013.01); H04L 43/0817 (2013.01); H04L 43/0852 (2013.01); H04L 43/10 (2013.01); H04L 43/12 (2013.01); H04L 67/02 (2013.01); H04L 67/1031 (2013.01); H04L 69/329 (2013.01);
Abstract

A method includes monitoring the operational status of at least some name servers in a name server network. Based on the monitoring, when an error or anomalous condition is detected at a particular name server, creating a policy to indicate the status of the particular name server. The policy is taken into account when resolving hostnames using the name server network.

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