HP X.25/9000 User's Guide HP-UX 11i v3 (5900-1523, August 2011)

Reporting problems
If you have a service contract with HP, ask your service representative to document the problem
as a Service Request (SR).
Include the following information where applicable:
• A detailed description of the problem. Describe the events leading up to the problem and the
symptoms of the problem. Include information on HP-UX commands, communication subsystem
commands, job streams, result codes, and error messages (the exact wording).
• A record of the output from x25 stat -c or a copy of the configuration file for each node.
Record the output from netstat.
• A printout of the existing configuration files.
• A copy of the ipmap file.
• A copy of the PSI upload file.
• The version, update, and fix information for all software. From this information HP can determine
if the problem is already known and if the correct software is installed at your site.
• Use the what command to check your X.25 version.
NOTE: Your host node should be running HP-UX Release 10.0 or later. To check the version
of your kernel, execute uname -r.
• Any network log files produced using the netfmt command (see “Tracing and logging utilities”
(page 118) for details of netfmt), and formatted copies of any X.25 trace files that were active
when the problem occurred.
• A short description of your application and how it should work.
• In the event of a system failure, take a full memory dump. Use the HP-UX utility /etc/
savecore to save a core dump. Refer Debugging Streams/UX Modules and Drivers -
Streams/UX for the HP 9000 Reference Manual for details.
• For PAD Problems:
Copies of the x29hosts and x3config files.◦
◦ A copy of the output from the ls -l /dev/x29 command if you are running x29printd
or x29uucpd.
◦ Identify which PAD utility is encountering the error (PAD services, PAD emulation, Remote
PAD printer, or UUCP). Include all files relative to that service (for example, .login,
profile ID, /usr/spool/lp/*, or /usr/lib/uucp/*).
◦ Include log files for the PAD services.
◦ Provide a detailed description of the problem.
For more information about files related to PAD services see “PAD services” (page 94).
NOTE: If you do not have a service contract with HP, you can still follow the procedure described
above, but you will be billed accordingly for time and materials.
Back-to-back configuration on the same host
Systems with multiple X.25 interfaces can use back-to-back configurations to perform diagnostics.
If you suspect that a switch might be the source of your connection problem, you can set up a
back-to-back configuration to test the circuit without the PAD switch.
To set up a back-to-back connection on a single host, you connect one card to another card on
the same host through a modem eliminator, as shown below. The modem eliminator provides the
necessary clocking for the DCE. The most common modem eliminators are RS-232 and V.35.
136 Troubleshooting