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.:
Date of Patent:
Feb. 02, 2021
Filed:
Oct. 20, 2017
Applicant:
Nec Corporation, Tokyo, JP;
Inventor:
Yohei Umezawa, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/24 (2006.01); H04L 12/26 (2006.01); G06F 11/20 (2006.01); H04L 29/08 (2006.01); H04L 29/14 (2006.01);
U.S. Cl.
CPC ...
H04L 41/0663 (2013.01); G06F 11/20 (2013.01); H04L 43/08 (2013.01); H04L 43/0894 (2013.01); H04L 43/10 (2013.01); H04L 43/16 (2013.01); H04L 67/10 (2013.01); H04L 69/40 (2013.01);
Abstract
In a cluster system having two server apparatuses that operate as an in-use type or a standby type, a first server apparatus is provided with: a heartbeat transmission/reception part that transmits and receives heartbeat packets to and from a corresponding second server apparatus; and a corresponding node monitoring part that adjusts a timeout period for transitioning operation of the first server apparatus from a standby type to an in-use type, according to the reception state of the heartbeat packets.