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:
Oct. 28, 2003
Filed:
Oct. 05, 1998
Applicant:
Inventors:
Michael A.. Helles, Fairport, NY (US);
William E. Mahuson, Webster, NY (US);
John J. Peters, Rochester, NY (US);
Assignee:
Performance Technologies, Incorporated, Rochester, NY (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01R 3/108 ; H04J 3/08 ; H04L 1/228 ;
U.S. Cl.
CPC ...
G01R 3/108 ; H04J 3/08 ; H04L 1/228 ;
Abstract
A fault tolerant network switch includes two or more switches units and a highly reliable (i.e., one with no single point of failure) interconnect unit so that during normal operation both switches are actively handling network packets and upon the failure of one of the switch units, another switch unit takes over, ensuring continued normal network operation, with somewhat reduced performance. The failed switch unit can then be replaced and the network returned to its original performance without disturbance to the other switch or the network cable connections.