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:
Oct. 11, 2016

Filed:

Apr. 28, 2014
Applicant:

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

Inventors:

Christoph Raisch, Gerlingen, DE;

Stefan Roscher, Stuttgart, DE;

Alexander Schmidt, Schönaich, DE;

Daniel Sentler, Steinenbronn, DE;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04L 12/54 (2013.01); H04L 12/863 (2013.01); H04L 12/46 (2006.01);
U.S. Cl.
CPC ...
H04L 47/62 (2013.01); H04L 12/462 (2013.01); H04L 12/4625 (2013.01);
Abstract

A switch unit has one frame buffer pool for storing received frames and another frame buffer pool for storing large frames. The frame size in the large frame buffer pool may be optimized to the largest amount of data the switch unit that an FCoE switching is running on can support (i.e., a limitation of zone entries). Should free space be unavailable in the large frame buffer pool, or if a sequence grows bigger than can be supported, the switch unit may still continue to send response frames back to the sender. While the switch unit may store header information of the frame, the switch unit does not store the data of subsequent frames any longer. Once the sequence has been received completely, a rejection message is sent back with an appropriate error or reason code. The rejection message enables the sender to attempt a retransmission or cancel the current request altogether.


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