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 9294385 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 22, 2016

Filed:

Mar. 03, 2014
Applicant:

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

Inventors:

Mircea Gusat, Langnau, CH;

Cyriel J Minkenberg, Gutenswil, CH;

German Rodriguez Herrera, Adliswil, CH;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/733 (2013.01); H04L 12/753 (2013.01);
U.S. Cl.
CPC ...
H04L 45/122 (2013.01); H04L 45/48 (2013.01);
Abstract

Methods and apparatus are provided for routing data packets between source and destination switches in a fat tree network. For each packet, a route is selected having three or less routing phases such that the route follows a shortest path across the network between the source and destination switches. The data packet is transmitted from the source switch to the destination switch, via the route, on one of first and second virtual channels unless the route includes a predetermined one of a down-up turn and an up-down turn. If the route includes the predetermined one of a down-up turn and an up-down turn, the data packet is transmitted, via the route, on the first virtual channel up to the switchat which the turn occurs and on the second virtual channel from that switch. This provides full-connectivity in fat tree networks with deadlock free operation.


Find Patent Forward Citations

Gusat, Mircea. (2016). Deadlock-free routing in fat tree networks (U.S. Patent No. 9294385). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/9294385

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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