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:
Feb. 28, 2017

Filed:

Feb. 05, 2016
Applicant:

International Business Machines Corporation, Armonk, NY (US);

Inventors:

Benjamin J. Fletcher, London, GB;

Andrew J. Stanford-Clark, Isle of Wight, GB;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G06F 15/16 (2006.01); H04L 12/58 (2006.01); H04L 12/26 (2006.01); H04L 29/08 (2006.01);
U.S. Cl.
CPC ...
H04L 51/043 (2013.01); H04L 43/0811 (2013.01); H04L 43/10 (2013.01); H04L 67/16 (2013.01); H04L 67/24 (2013.01); H04L 67/2819 (2013.01);
Abstract

A device for enabling a first computer network device to determine whether a second computer network device has an online status or an offline status includes a memory device with instructions for execution by a processor to: receive a request from the first computer network device for the status of the second computer network device; determine whether the second computer network device is online or offline; in response to a determination that the second computer network device is online, return a first network address to the first computer network device; and in response to a determination that the second computer network device is offline, return a second network address to the first computer network device, wherein the second network address is a known bad address that will not provide a response to the first computer network device.


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