Invention Patent
- Patent Title: ACQUIRING THE IDENTIFICATION OF A NODE IN A DATA PROCESSING INPUT/OUTPUT SYSTEM
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Application No.: CA2068805Application Date: 1992-05-15
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Publication No.: CA2068805CPublication Date: 1996-09-17
- Inventor: BROWN PAUL J , FREDERICKS KENNETH J SR , HEFFERON EUGENE P , MOFFITT GERALD T , MERITT ALLAN S
- Applicant: IBM
- Assignee: IBM
- Current Assignee: IBM
- Priority: US75035691 1991-08-27
- Main IPC: G06F13/14
- IPC: G06F13/14 ; G06F13/00 ; H04L29/00 ; G06F9/00 ; G06F12/00
Abstract:
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.
Public/Granted literature
- CA2068805A1 ACQUIRING THE IDENTIFICATION OF A NODE IN A DATA PROCESSING INPUT/OUTPUT SYSTEM Public/Granted day:1993-02-28
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