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公开(公告)号：AT179002T
公开(公告)日：1999-04-15
申请号：AT92110130
申请日：1992-06-16
Applicant: IBM
Inventor： BROWN PAUL JOSEPH , FREDERICKS KENNETH JAMES SR , HEFFERON EUGENE PAUL , MERITT ALLAN SAMUEL , MOFFITT GERALD THOMAS
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.
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公开(公告)号：AU2002988A
公开(公告)日：1989-03-02
申请号：AU2002988
申请日：1988-07-26
Applicant: IBM
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公开(公告)号：DE69122013T2
公开(公告)日：1997-03-13
申请号：DE69122013
申请日：1991-06-18
Applicant: IBM
Inventor： ELLIOTT JOSEPH CHARLES , HEFFERON EUGENE PAUL , MERITT ALLAN SAMUEL , SACHS MARTIN WILLIAM , SNEDAKER MARK CARL
Abstract: In a computer I/O system including a plurality of link-level facilities and a dynamic switch (10) having a plurality of ports (P), each link-level facility being attached to an individual one of the ports (P), a mechanism and method for assigning a unique link level address to each of the link-level facilities. As each of the link-level facilities comes on line, it sends an acquire link address (ALA) frame and waits for a response (ACK) frame. The ALA frame may be addressed to a general to-whom-it-may-concern address and have a source address of who-am-I. Only a dynamic switch (10) normally assigns link addresses. When receiving (110) an ALA frame, the dynamic switch returns (115) an ACK frame having a unique link address assigned to the sender of the ALA frame. Provision is made for determining if there is a dynamic switch present, or, if the link-level facilities are connected together by a static connection through the dynamic switch, for the link-level facility of a channel to assign the unique link addresses.
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公开(公告)号：MX9204928A
公开(公告)日：1993-03-01
申请号：MX9204928
申请日：1992-08-26
Applicant: IBM
Inventor： BROWN PAUL JOSEPH , FREDERICKS KENNETH JAMES , HEFFERON EUGENE PAUL , MOFFIT GERALD THOMAS , MERITT ALLAN SAMUEL
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.
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Patent Agency Ranking
公开(公告)号：AU604350B2
公开(公告)日：1990-12-13
申请号：AU2002988
申请日：1988-07-26
Applicant: IBM
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公开(公告)号：DE69228904T2
公开(公告)日：1999-11-25
申请号：DE69228904
申请日：1992-06-16
Applicant: IBM
Inventor： BROWN PAUL JOSEPH , FREDERICKS KENNETH JAMES , HEFFERON EUGENE PAUL , MERITT ALLAN SAMUEL , MOFFITT GERALD THOMAS
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.
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公开(公告)号：DE69228904D1
公开(公告)日：1999-05-20
申请号：DE69228904
申请日：1992-06-16
Applicant: IBM
Inventor： BROWN PAUL JOSEPH , FREDERICKS KENNETH JAMES , HEFFERON EUGENE PAUL , MERITT ALLAN SAMUEL , MOFFITT GERALD THOMAS
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.
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公开(公告)号：DE69122013D1
公开(公告)日：1996-10-17
申请号：DE69122013
申请日：1991-06-18
Applicant: IBM
Inventor： ELLIOTT JOSEPH CHARLES , HEFFERON EUGENE PAUL , MERITT ALLAN SAMUEL , SACHS MARTIN WILLIAM , SNEDAKER MARK CARL
Abstract: In a computer I/O system including a plurality of link-level facilities and a dynamic switch (10) having a plurality of ports (P), each link-level facility being attached to an individual one of the ports (P), a mechanism and method for assigning a unique link level address to each of the link-level facilities. As each of the link-level facilities comes on line, it sends an acquire link address (ALA) frame and waits for a response (ACK) frame. The ALA frame may be addressed to a general to-whom-it-may-concern address and have a source address of who-am-I. Only a dynamic switch (10) normally assigns link addresses. When receiving (110) an ALA frame, the dynamic switch returns (115) an ACK frame having a unique link address assigned to the sender of the ALA frame. Provision is made for determining if there is a dynamic switch present, or, if the link-level facilities are connected together by a static connection through the dynamic switch, for the link-level facility of a channel to assign the unique link addresses.
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