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:
Sep. 06, 2005
Filed:
Aug. 17, 2000
John Andrew Aiken, Jr., Raleigh, NC (US);
Alfred Bundgaard Christensen, Raleigh, NC (US);
Wesley Mcmillan Devine, Apex, NC (US);
David Anthony Herr, Apex, NC (US);
Mark W. Mcclintock, Raleigh, NC (US);
John Andrew Aiken, Jr., Raleigh, NC (US);
Alfred Bundgaard Christensen, Raleigh, NC (US);
Wesley McMillan Devine, Apex, NC (US);
David Anthony Herr, Apex, NC (US);
Mark W. McClintock, Raleigh, NC (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Methods, systems and computer program products provide for recovery from a failure of a primary routing communication protocol stack which routes communications over connections to a virtual Internet Protocol address (VIPA) and at least one port associated with the VIPA to a plurality of other communication protocol stacks associated by the primary routing stack and with the VIPA and the at least one port. At least one backup routing communication protocol stack is identified. The backup routing stack stores an identification of stacks associated with the VIPA and the at least one port as candidate target stacks. Messages are received at the backup routing stack identifying stacks having application instances bound to the VIPA and listening on the at least one port as current actual target stacks. Connections to the VIPA and the at least one port for current actual target stacks are also identified and a routing table constructed from the received messages so as to provide routing path information to current actual target stacks associated with the connection. Messages on the connections to the VIPA and the at least one port are routed through the backup stack utilizing the constructed routing table.