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Error recovery to enable error-free message transfer between nodes of a computer network

United States Patent

January 26, 2016
View the Complete Patent at the US Patent & Trademark Office
An error-recovery method to enable error-free message transfer between nodes of a computer network. A first node of the network sends a packet to a second node of the network over a link between the nodes, and the first node keeps a copy of the packet on a sending end of the link until the first node receives acknowledgment from the second node that the packet was received without error. The second node tests the packet to determine if the packet is error free. If the packet is not error free, the second node sets a flag to mark the packet as corrupt. The second node returns acknowledgement to the first node specifying whether the packet was received with or without error. When the packet is received with error, the link is returned to a known state and the packet is sent again to the second node.
Blumrich; Matthias A. (Ridgefield, NY), Coteus; Paul W. (Yorktown Heights, NY), Chen; Dong (Croton on Hudson, NY), Gara; Alan (Mount Kisco, NY), Giampapa; Mark E. (Irvington, NY), Heidelberger; Philip (Cortlandt Manor, NY), Hoenicke; Dirk (Ossining, NY), Takken; Todd (Brewster, NY), Steinmacher-Burow; Burkhard (Wenau, DE), Vranas; Pavlos M. (Bedford Hills, NY)
International Business Machines Corporation (Armonk, NY)
14/ 148,348
January 6, 2014
STATEMENT OF GOVERNMENT RIGHTS The invention described in this application was made with U.S. Government support under U.S. Government contract B517552 awarded by the U.S. Department of Energy, and the U.S. Government has certain rights in the invention.