Configuring and Managing Host-Based X.25 Links - Edition 5 (36939-90054)

22 Chapter1
Introduction
Maintenance
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.