OSI/TS Configuration and Management Manual

Performing Monitoring and Troubleshooting Guide
OSI/TS Configuration and Management Manual—424831-001
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Examples
Examples
The following examples show some of the different options that can be used with the
CHECK SU command.
The following command displays information about all subdevices being used by the
application process $MYAPP and are associated with the TSP server $TSP1. Note that
this command displays information for all levels because the command defaults to ALL:
CHECK SU $TSP1.*, OPENER $MYAPP
The following command displays information about only those TSP subdevices that are
being used on the connection associated with the local TSEL 700001:
CHECK SU $TSP1.*, LOCALTSEL 700001, DISPLAY ONE
The following command displays information about all TSP subdevices in an error state
and opened by the process $TSP1, all TSP subdevices in an error state having a name
beginning with #SA and opened by the process $TSP2, and all NSP subdevices
associated with those selected TSP subdevices:
CHECK SU ($TSP1.*, $TSP2.#SA*), ERRORONLY
An Approach to Troubleshooting
The interaction of the TSP processes and the NSP processes with each other and with
the peer protocols at each layer can lead to difficulties when your subsystem is
configured improperly, or when an application gets out of synchronization with the
connection. This section describes a strategy for diagnosing problems in your OSI/TS
subsystem. This strategy generally involves six basic steps:
1. Reset the statistics counters and rerun the application (this simplifies the information
on statistics screens).
2. Analyze the errors returned to the application by using SCF.
3. Review the statistics by using SCF.
4. Collect trace information by using SCF.
5. Analyze the trace by using PTrace.
6. Correct the problem.
Of course, you need not follow all the steps once you find the source of a problem.
These steps are discussed more fully later in this section.
A Top-Down Troubleshooting Method
To interpret symptoms correctly and identify where problems lie, you should have a
basic understanding of how the different components of OSI/TS work together to
support a connection. The main components of an OSI/TS end system—the
processes—are designed to simulate the distinct layers of the OSI Reference Model. For