SNAX/XF and SNAX/APN Configuration and Management Manual

SNAX/XF and SNAX/APN Configuration and Management Manual—425836-006
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PTrace Reference for SNAX/XF and
SNAX/APN
This section provides information about the use of the PTrace utility to display
information from traces of SNAX lines and the service manager. It includes
subsystem-specific information about PTrace commands and displays. It also explains
how the TRACE command and the PTrace utility work together.
For general information about PTrace—including full instructions for starting and
stopping PTrace, descriptions of all PTrace commands with the exception of
subsystem specifics, and descriptions of PTrace error messages—see the PTrace
Reference Manual. For a detailed description of the SCF TRACE command for SNAX,
see Section 13, SCF Commands for SNAX/XF and SNAX/APN. The SNAX/CM has its
own trace facility; for an example of a trace for SNAX/CM, see the SNAX Connection
Manager (SNAX/CM) Manual.
To interpret the SNA information within SNAX trace records, you must be familiar with
SNA protocols, including information defined in the following IBM manuals:

Systems Network Architecture: Formats

Systems Network Architecture Format and Protocol Reference Manual:
Architectural Logic

Systems Network Architecture: Sessions Between Logical Units

Synchronous Data Link Control Concepts if you are analyzing traces involving line
type 58,5

The X.25 Interface for Attaching SNA Nodes to Packet-Switched Data Networks:
General Information Manual if you are analyzing traces involving X.25 lines.
TRACE and PTrace
Used together, the TRACE command and the PTrace utility allow you to capture and
examine data that is received and sent by SNAX and also to monitor the processing of
that data within SNAX. The captured data can help in tasks such as troubleshooting,
performance tuning, and load balancing.
You can issue the TRACE command by using SCF, as described in Section 13, SCF
Commands for SNAX/XF and SNAX/APN of this manual. The TRACE command
collects trace data in unstructured disk files on a NonStop system. PTrace formats the
data in these trace files so that you can examine and analyze the data.