How to Troubleshoot Your SNA With a Token Ring
SNA stands for Systems Network Architecture. SNA was introduced by IBM in 1974 as a centralized architecture using a host computer to control multiple terminals and enhance them. As IBM transformed more into services, SNA has adapted to peer-to-peer communications and distributed computing environments. The system provides useful tools that allow for quickly pinpointing a problem and possible solutions. Token Ring, also an IBM development, aids these efforts. IBM also provides a support Web site to further aid solutions.
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Instructions
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Identify the problem. Your system automatically records instances of problem analysis, problem logging and tracking, problem reporting and problem correction. Using these problem-analysis functions enables effective systems management that benefits the user and the service technician.
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Identify the system reference code (SRC). The SRC is an eight-digit identifier that encapsulates the problem condition.
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Answer the problem analysis questions. A series of "yes" or "no" answers provide a road map to the problem. Use this as a starting point whenever you are unsure of where a problem lies.
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Enable the "Watch for event" function. The watch for event function automatically watches for specific messages or Licensed Internal Code, or LIC log entries. This function notifies you when a specified event happens, and then engages the specific exit program to take remedial action.
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Run the Authorized Program Analysis Report (APAR). According to IBM's i5/OS Information Center, "the APAR is a request for a defect correction of in a current release of an IBM-supplied program." For yourself or a service technician, this provides sufficient information to diagnose an SNA problem.
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References
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