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EP0403414A2
Expired / Lapsed
EP
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Method and system for automatic non-disruptive problem determination and recovery of communication link problems
Assignee: International Business Machines Corp
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Filing: 1990-05-29
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Granted: —
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Expires: 2010-05-29
Abstract
Abstract In the method for problem determination and recovery of a failing resource on a communication link segment in a data communication network. The using node (6) passes link event data to the communication link manager (2) for analysis when a problem occurs on a link segment. The communication link manager (2) interacts with a configuration data base (4) to determine the physical configuration of the failing link segment and the controlling link connection subsystem manager (3). The communication link manager (2) directs the appropriate link connection subsystem manager (3) to initiate tests of the various link connection components on the link segment under its control. When the failing resource is identified, the communication link manager (2) initiates the appropriate non-disruptive recovery procedure through the link connection subsystem manager (3) and prompts the data link control to restart the line.
Inventors
- 👤 John George Stevenson
- 👤 Raymond Charles Williams
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-01 16:52
CPC Classifications
H; H04; H04L; H04L41/00; H04L41/06; H04L41/0654; H04L41/0677; H04L43/00; H04L43/50
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
191 words
A method for automatic non-disruptive problem determination and recovery of communication link problems between a using node (6) and a remote node (7) in a data communication network characterized in that it comprises the steps of: detecting the communication link problem at said using node, accumulating link event data at said using node and passing said link event data to a communication link manager (2), responsive to said link event data, sending a request from said communication link manager to a link configuration manager (4) for link subsystem configuration data on said communication link and returning said configuration data to said communication link manager, selecting the problem determination logic for the configuration returned from said link configuration manager and invoking a link connection subsystem manager (3) for application analysis, conducting testing of the link segment of said communication link for which said link connection subsystem manager is responsible, determining the failed component on said communication link by said link connection subsystem manager and identifying said failed component to said communication link manager, and responsive to the receipt of said identified failed component initiating the recovery action by said communication link manager.
Claim 2
Independent Claim
191 words
A method for automatic non-disruptive problem determination and recovery of communication link problems between a using node (6) and a remote node (7) in a data communication network characterized in that it comprises the steps of: detecting the communication link problem at said using node, accumulating link event data at said using node and passing said link event data to a communication link manager (2), responsive to said link event data, sending a request from said communication link manager to a link configuration manager (4) for link subsystem configuration data on said communication link and returning said configuration data to said communication link manager, selecting the problem determination logic for the configuration returned from said link configuration manager and invoking a link connection subsystem manager (3) for application analysis, conducting testing of the link segment of said communication link for which said link connection subsystem manager is responsible, determining the failed component on said communication link by said link connection subsystem manager and identifying said failed component to said communication link manager, and responsive to the receipt of said identified failed component initiating the recovery action by said communication link manager.
Claim 3
Dependent Claim
53 words
The method of claim 1 wherein the step of detecting the communication link problem at a using node (6) includes the steps of determining if the problem is internal to the using node, and if the problem is not internal to the using node, determining if the problem is with the link connection.
Claim 4
Dependent Claim
66 words
The method of claim 1 or 2 wherein the step of returning said configuration data to said communication link manager (2) includes identifying the link connection components on said communication link and the physical connections between said link connection components, identifying the link connection subsystem manager (3) responsible for each link connection component, and identifying the backup components and physical connections to use for non-disruptive recovery.
Claim 5
Dependent Claim
30 words
The method of claim 1, 2 or 3 further including the step of determining if at least one more link connection subsystem manager (3) should be invoked for application analysis.
Claim 6
Independent Claim
30 words
The method of any one of claims 1 to 4 wherein the step of initiating a recovery action includes determining if a recovery action is defined for the failed component.
Claim 7
Independent Claim
29 words
The method of any one of claims 1 to 5 further including updating the data base maintained by said link configuration manager (4) after said recovery action is complete.
Claim 8
Dependent Claim
41 words
The method of claim 6 wherein the step of updating the data base includes flagging the defective component, removing a backup component from the pool maintained by said link configuration manager (4), and adding said backup component to the communication link.
Claim 9
Independent Claim
42 words
The method of any one of claims 1 to 7 further including the steps of notifying data link control to restart the communication link and sending a notification to the host system identifying the failed component if said recovery action is successful.
Claim 10
Independent Claim
40 words
The method of any one of claims 1 to 8 further including the steps of sending an alert to the host indicating that a recovery action was attempted but failed and notifying data link control to send an inoperative signal.
Claim 11
Independent Claim
49 words
The method of any one of claims 1 to 9 further including the step of interrupting data link control at said using node (6) in order to suspend the communication sessions between said using node and said remote node (7) until the communication link problem is isolated and resolved.
Claim 12
Independent Claim
212 words
A system for automatic non-disruptive problem determination and recovery of communication link problems between a using node (6) and a remote node (7) in the data communication network comprising: a communication link manager (2) connected to said communication network for coordinating the testing of link components, analyzing the results of said testing and invoking a recovery procedure, first means at said using node for detecting a communication link problem, second means at said using node for accumulating link event data and passing said link event data to said communication link manager, a link configuration manager (4) cooperating with said communication link manager for maintaining a configuration data base and providing link configuration data, said configuration data including the identity of the link connection components (10) on said communication link and the physical connection between components, and the identity of backup components and the physical connections to use for recovery from a communication link problem, and a plurality of link connection subsystem managers (3) connected to said communication network cooperating with said communication link manager for conducting the testing of assigned segments of said communication link, identifying a failed link component to said communication link manager, and issuing recovery commands for said failed link component under the direction of said communication link manager.
Claim 13
Independent Claim
212 words
A system for automatic non-disruptive problem determination and recovery of communication link problems between a using node (6) and a remote node (7) in the data communication network comprising: a communication link manager (2) connected to said communication network for coordinating the testing of link components, analyzing the results of said testing and invoking a recovery procedure, first means at said using node for detecting a communication link problem, second means at said using node for accumulating link event data and passing said link event data to said communication link manager, a link configuration manager (4) cooperating with said communication link manager for maintaining a configuration data base and providing link configuration data, said configuration data including the identity of the link connection components (10) on said communication link and the physical connection between components, and the identity of backup components and the physical connections to use for recovery from a communication link problem, and a plurality of link connection subsystem managers (3) connected to said communication network cooperating with said communication link manager for conducting the testing of assigned segments of said communication link, identifying a failed link component to said communication link manager, and issuing recovery commands for said failed link component under the direction of said communication link manager.
Claim 14
Dependent Claim
53 words
The system of claim 11 including interface means (22) at said using node (6) for interrupting the data link control at said using node in order to suspend the communication sessions that are active over the communication link between said using node and said remote node (7) until the recovery procedure is completed.
References Cited (Backward Citations)
No citation records indexed.
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