Configuring and Managing Host-Based X.25 Links - Edition 6 (36939-90057)

Introduction
Maintenance
Chapter 1
34
Maintenance
To support the maintenance of host-based X.25 connections, the Terminal Diagnostic
Support Monitor (TermDSM) utility supports additional command functions. These
functions are part of the DIag, DUmp, Reset, and Status commands (capital letters
indicate command abbreviations). Additionally, the TermDSM Trace command allows
tracing of X.25 level 2 or level 3, or of a virtual circuit (VC).
Several of the TermDSM command functions now provide data about DTC/X.25 Network
Access cards in addition to the data they provide about asynchronous cards. For
example, the Diag Selftest function tests DTC/X.25 Network Access cards (SNPs) as well
as asynchronous cards (SICs).
Terminology
TermDSM uses designations for the types of cards it tests that you might not be familiar
with. Asynchronous cards are referred to as SICs, or serial interface cards. Likewise,
DTC/X.25 Network Access cards are referred to as SNPs. SNP is an abbreviation for
Synchronous Network Processor.
A number of the TermDSM commands use the SNP designation as a subcommand. For
example, to capture information about a specific DTC/X.25 Network Access card and
write it to a file you would enter the DUmp command in TermDSM, then enter the SNP
subcommand, specifying the DTC number and card number as the SNP parameters.
Trace Command Options
The trace function has been added to TermDSM so that X.25 packets can be traced at the
DTC and card level.
Only one trace (and one trace option) can be active at a time.
To enable tracing you enter the TermDSM Trace command then choose a trace option
through the TRACEON subcommand. Each of the three trace options are described.
Depending on the trace level you specify, you will then be prompted for additional
information.
VC Trace
If you choose trace option 1, VC trace, you will be prompted for a VC (virtual circuit)
number. Enter the number of the VC for which you want trace information. You will then
be asked to specify a filter for the trace. You can choose either to trace headers only or to
trace full packets. You will also be given the option of specifying a filename for the trace
file.
Level 2 Trace
If you choose trace option 2, level 2 trace, you will be prompted for the filter (trace
headers only or full packets) and given the option of specifying a file name. No other
information is required.