SNA Link/iX Node Managers Guide (30291-90009)

Chapter 1 17
SNA Links Overview
Tracing Provided
Tracing Provided
Three levels of tracing for the SNA links are provided: node tracing,
intrinsic tracing, and link-level tracing. Node tracing for SNA
Transport is on a node basis and normally is turned off. When turned
on, it traces SNA Transport internal events; so, it is a useful tool for
troubleshooting SNA Transport. Intrinsic tracing is on a session
basis and normally is turned off. When turned on, it traces the
send/receive interface between SNA Transport and the SNA services.
Because it includes the SNA headers as well as the data, SNA
Transport intrinsic tracing is a useful tool for troubleshooting the SNA
services. Both types of SNA Transport tracing are turned on and off by
using MPE commands. The SDLC link driver also has a trace facility
that is useful for troubleshooting SDLC link-level problems; since it
drains resources, it normally is turned off. Link-level tracing is
turned on and off by using MPE commands. Tracing is described in
Chapter 5 , “SNA Link Troubleshooting,” of this manual; the commands
are described in Chapter 6 , “MPE Commands.”