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公开(公告)号：DE69230199D1
公开(公告)日：1999-12-02
申请号：DE69230199
申请日：1992-06-22
Applicant: IBM
Inventor： BIRD RAYMOND FREDERICK , BRITTON KATHRYN HENINGER , CHUNG TIEN-YAW DAVID , EDWARDS ALLAN KENDRICK , MATHEW JOHNY , POZEFSKY DIANE PHYLIS , SARKAR SOUMITRA , TURNER ROGER DON , CHUNG WINSTON WEN-KAI , YEUNG YUE TAK , GRAY JAMES PEYTON , DYKEMAN HAROLD DOUGLAS , DOERINGER WILLIBALD AUGUST , AUERBACH JOSHUA SETH , WILSON JOHN HAYDEN
Abstract: A Transport Layer Protocol Boundary (TLPB) architecture is described which will permit an application program to run over a non-native transport protocol without first generating a protocol compensation package tailored to the transport protocols assumed by the program's application programming interface and by the available transport provider. All transport functions required by the program are converted to standardized or TLPB representations. When a connection between the first application program and a second remote application is requested, the individual required TLPB transport functions are compared to corresponding functions supported by the transport provider. Compensations are invoked only where there is a mismatch. The node on which the remote application program runs is informed of the compensations so that necessary decompensation operations can be performed before the data is delivered to the remote application program.
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公开(公告)号：DE68923831D1
公开(公告)日：1995-09-21
申请号：DE68923831
申请日：1989-05-23
Applicant: IBM
Inventor： CITRON ANDREW PAUL , DRAKE JOHN ELLIS , FERREE MARSHA ELLEN , FETVEDT JOHN ENGUM , GRAY JAMES PEYTON , ORDANIC ZVONIMIR
Abstract: The links in a data communications network following Systems Network Architecture may be categorized as limited resource links if those links are shared access transport facilities, such as a switched telephone network, X.21, X.25 or token ring local area network facilities. In setting up LU-LU sessions between network users, a limited resource session identifier field is set to a specific value if any of the links in the session data path is defined as a limited resource link. In a conversation between two users ends (20, 22), the primary logical unit (32) responds by determining whether the session has been identified as a limited resource session. If it has, the primary logical unit initiates action to deactivate the session without waiting for network control operation action. Allowing the primary logical unit to deactivate a limited resource session assures that the limited resource link or links will not remain allocated needlessly to an unused session.
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公开(公告)号：DE68923489D1
公开(公告)日：1995-08-24
申请号：DE68923489
申请日：1989-05-23
Applicant: IBM
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公开(公告)号：DE3853022T2
公开(公告)日：1995-08-10
申请号：DE3853022
申请日：1988-04-12
Applicant: IBM
Inventor： BARATZ ALAN EDWARD , DRAKE JOHN ELLIS , GROVER GEORGE ALLAN , RAFALOW LEE MARK , GRAY JAMES PEYTON , POLLARD MELINDA ROSS , POZEFSKY DIANE PHYLIS
Abstract: Method of disseminating information in a computer network wherein, upon activating any link in the network, a first exchange of signals between nodes attached to said link is automatically initiated for providing each of the attached nodes with information indicating the availability of the node at the other end of the link for participating in a predetermined type session. If both nodes are available for participating in a the session, a second exchange of signals between the nodes is initiated for establishing a session. Then a third exchange is automatically initiated for providing the nodes with information needed to make effective use of the session. Upon completion of said third exchange, internal operations are conducted at said nodes designating the session as a predetermined type session and making said session available to transaction programs at the nodes for exchanging additional network state information as needed.
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公开(公告)号：DE68918765D1
公开(公告)日：1994-11-17
申请号：DE68918765
申请日：1989-06-07
Applicant: IBM
Inventor： ARROWOOD ANDREW HILLIARD , CLARKE KATHRYN E , DRAKE JOHN ELLIS , EISENBIES JOHN LAWRENCE , GRAY JAMES PEYTON , NORSWORTHY KARLA JEAN , POZEFSKY DIANE PHYLIS , SMETANKA TERENCE DALE
Abstract: In a communications network, each network node can maintain its own list of network resources in a topology database. When the state of a resource "owned" by a particular node changes, that node broadcasts a topology database update (TDU) message to adjacent nodes. Each adjacent node updates its own topology database and rebroadcasts the message. To minimize the amount of information that must be included in TDU messages when two nodes are reconnected after an outage, each node assigns flow reduction sequence numbers (FRSNs) to TDU messages and keeps a record of the FRSN for the last TDU message sent to an adjacent node. The node also records, for each resource in its database, the FRSN of the last TDU message including that resource. When two nodes are reconnected, the sending node includes in the TDU message only those resources having a FRSN greater than the FRSN assigned to the last TDU sent to the adjacent node to which the TDU message is directed.
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Patent Agency Ranking
公开(公告)号：BR9102018A
公开(公告)日：1991-12-24
申请号：BR9102018
申请日：1991-05-16
Applicant: IBM
Inventor： BRITTON KATHRYN , CITRON ANDREW PAUL , GRAY JAMES PEYTON , MASLAK BARBARA ANNE MARIE
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公开(公告)号：DE3853022D1
公开(公告)日：1995-03-23
申请号：DE3853022
申请日：1988-04-12
Applicant: IBM
Inventor： BARATZ ALAN EDWARD , DRAKE JOHN ELLIS , GROVER GEORGE ALLAN , RAFALOW LEE MARK , GRAY JAMES PEYTON , POLLARD MELINDA ROSS , POZEFSKY DIANE PHYLIS
Abstract: Method of disseminating information in a computer network wherein, upon activating any link in the network, a first exchange of signals between nodes attached to said link is automatically initiated for providing each of the attached nodes with information indicating the availability of the node at the other end of the link for participating in a predetermined type session. If both nodes are available for participating in a the session, a second exchange of signals between the nodes is initiated for establishing a session. Then a third exchange is automatically initiated for providing the nodes with information needed to make effective use of the session. Upon completion of said third exchange, internal operations are conducted at said nodes designating the session as a predetermined type session and making said session available to transaction programs at the nodes for exchanging additional network state information as needed.
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公开(公告)号：DE3787567T2
公开(公告)日：1994-05-11
申请号：DE3787567
申请日：1987-05-08
Applicant: IBM
Inventor： BARZILAI TSIPORA PIRCHIA , BIRD RAYMOND FREDERICK , GRAY JAMES PEYTON , KADABA BHARATH KUMAR , KALMBACH JAMES BOOTH , KNAUTH JEFFREY GALE , POZEFSKY DIANE PHYLLIS
Abstract: A technique called "Adaptive Pacing" permits a receiving node, in a computing networking, to change the size of an information window during an active session. To effect the change, the receiving node sends an "Isolated Pacing Message" (IPM) to the sending node. Thereafter, the sending node adjusts the window size to conform with a window size value in the IPM. The IPM includes a type field, a reset window indicator and a next window size field. There are three types of isolated pacing messages. Two of the messages are used by the receiving node to control the flow of data; while the third message is used, by the sending node, to confirm the beginning of a new window and the ending of an old one.
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公开(公告)号：DE3887572D1
公开(公告)日：1994-03-17
申请号：DE3887572
申请日：1988-05-27
Applicant: IBM
Inventor： ARROWOOD ANDREW HILLIARD , BARATZ ALAN EDWARD , CHIMENTO PHILIP FRANCIS , DRAKE JOHN ELLIS , EISENBIES JOHN LAWRENCE , GRAY JAMES PEYTON , NORSWORTHY KARLA JEAN , POSEFSKY DIANE PHYLIS
Abstract: Each network node in a communications network maintains its own copy of the network topology database defining network resources. Each resource record contains a "timer" field which is initially set to a maximum value but which may be decremented on a daily basis. If the timer field is decremented to zero without being reset, the node unilaterally removes the resource record from its copy of the database. The timer field will normally reach zero only for obsolete resource records since each network node responsible for a resource broadcasts a timer-resetting message for the resource (1) each time the resource status changes, (2) when the node first joins or rejoins the network, and (3) on a periodic (weekly) basis regardless of whether conditions (1) or (2) have occurred.
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公开(公告)号：DE3882822T2
公开(公告)日：1994-03-17
申请号：DE3882822
申请日：1988-05-24
Applicant: IBM
Inventor： BARATZ ALAN EDWARD , GOPAL INDER SARAT , GRAY JAMES PEYTON , GROVER GEORGE ALLAN , JAFFE JEFFREY MARTIN , LORRAIN JEAN A , POLLARD MELINDA ROSS , POZEFSKY DIANE PHYLIS , POZEFSKY MARK , RAFALOW LEE MARK
Abstract: A search dynamically locates resources (e.g., logical units (LUs) and transaction programs and files associated with LUs) in a computer network so that a session can be established between the origin and the destination of the search. The network includes end nodes associated with server nodes,and a resource contained in any node is located by a requesting node. The requesting node initiates a search of the resources residing within itself. If the resource does not reside in the requesting node, the server node searches the resources known to the server node that reside anywhere in the network. If the resource is not known by the server node, it searches all resources that reside in its associated end nodes. If the resource does not reside in the associated end nodes, either a request is sent to a central directory if one exists or a search of all resources in the network is made.
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