Acquiring the identification of a node in a data processing...

Details Acquiring the identification of a node in a data processing... Acquiring the identification of a node in a data processing...

G - Physics

06

F

G06F 13/00 (2006.01) G06F 9/00 (2006.01) G06F 12/00 (2006.01) H04L 29/00 (2006.01)

Patent

CA 2068805

A method for acquiring the node identifier of a node in a data processing input/output (I/O) system having a plurality of nodes. This procedure is part of the initialization of each node in the I/O system and may be used to establish the configuration of the I/O system such that if a connection breaks or a fault occurs between nodes, the configuration can be confirmed after the break or fault is corrected. This prevents data from being sent to the wrong device if lines were connected in a different configuration during the correction of a fault. The node identifier is a worldwide-unique identifier such that only one node is identified by a node identifier. The node identifier contains a validity code that specifies if the node identifier is valid. Also disclosed is a retry procedure for retrying the acquisition of a node identifier if the acquired node identifier is not valid, and a deferral procedure which defers the retry procedure if a link is not available.

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