OSI Troubleshooting Guide, May 1997

Chapter 2 63
Problem Solving
Tracing and Logging through /opt/ots/bin/osidiag
Tracing and Logging User Applications
Two facilities exist to provide more data about the behavior and errors
encountered by your application, API tracing and nettl.
API Tracing This facility allows you to trace the calls your
application makes to the Application Programmatic
Interface. The mechanism to perform API tracing is
described in the programmer's guide for the service you
are using.
nettl The nettl command allows you to enable logging and
tracing in the OTS stack as well as for the FTAM
service. The syntax of the nettl and netfmt
commands is given in the nettl(1M) and netfmt(1M)
man pages.
Hewlett-Packard recommends that you enable warning and error logging
for stack components at and below the service you are using. Table 2-3
shows the entities on which you should enable logging for gathering
information.
Table 2-3 Logging and Tracing Entities
Service/Layer Entities to Log
X.400* X.400 Logging facilities
+ OTS entities
+ Link entity
FTAM FTAM_VFS FTAM_USER
FTAM_INIT FTAM_RESP
+ ULA entities
+ OTS entities
+ Link entity
APRI ACSE_PRES
+ OTS entities
+ Link entity
OTS SESSION TRANSPORT NETWORK OTS
LAN 802.3 NS_LS_DRIVER
X.25 SX 25 L2, SX25L3 (Level 2 and 3 link tracing)