Multiplex communications – Diagnostic testing
Reexamination Certificate
2005-02-09
2008-11-18
Nguyen, Steven H. D (Department: 2619)
Multiplex communications
Diagnostic testing
C370S248000, C370S252000, C710S302000, C710S304000
Reexamination Certificate
active
07453816
ABSTRACT:
A method, apparatus, and computer instructions are provided by the present invention to automatically recover from a failed node concurrent maintenance operation. A control logic is provided to send a first test command to processors of a new node. If the first test command is successful, a second test command is sent to all processors or to the remaining nodes if nodes are removed. If the second command is successful, system operation is resumed with the newly configured topology with either nodes added or removed.If the response is incorrect or a timeout has occurred, the control logic restores values to the current mode register and sends a third test command to check for an error. A fatal system attention is sent to a service processor or system software if an error is encountered. If no error, system operation is resumed with previously configured topology.
REFERENCES:
patent: 6070207 (2000-05-01), Bell
patent: 6681282 (2004-01-01), Golden et al.
patent: 7107398 (2006-09-01), Depew et al.
patent: 2002/0075870 (2002-06-01), de Azevedo et al.
patent: 2003/0167367 (2003-09-01), Kaushik et al.
patent: 2003/0193890 (2003-10-01), Tsillas et al.
patent: 2006/0159007 (2006-07-01), Frutiger et al.
Fields, Jr. James Stephen
Floyd Michael Stephen
Goodman Benjiman Lee
Lecocq Paul Frank
Reddy Praveen S.
International Business Machines - Corporation
McBurney Mark E.
Nguyen Steven H. D
Stewart Mari A.
Tran Thinh D
LandOfFree
Method and apparatus for automatic recovery from a failed... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for automatic recovery from a failed..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for automatic recovery from a failed... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4033943