IBM Support

TRCCNN Instructions for Capturing Data for Telnet Drops

Troubleshooting


Problem

To capture data when Telnet drops, use the TRCCNN command.

Resolving The Problem

IMPORTANT:  Before starting a TRCCNN or TRCINT command ensure that you have the corrective PTFs for APAR MA48477 applied to your system.  
The corrective PTFs are:
Release PTF Included with cumulative PTF number
R720   MF67576 0296
R730   MF67575 0310
R740   MF67574 0303
To capture data when Telnet drops, do the following:

1.

On the operating system command line, type the following:

TRCCNN

Press F4 to prompt the command.
2. Specify the following:

Trace option setting . . . . . . > *ON

Press the Enter key.
3. Specify the following:

Trace type . . . . . . . . . . . *IP

Trace full . . . . . . . . . . . *WRAP
Trace table name . . . . . . . . IBM (or some other unique label)
Size:
Number of units . . . . . . . 196000 (if you know the TCP/IP address of the failing PC you can set this to 136000)
Unit of measure . . . . . . . *KB

Page down, and specify the following:

TCP/IP data:
Protocol . . . . . . . . . . . *TCP
Local port . . . . . . . . . . 23 (Note: when using SSL specify Local port 992)

Remote port . . . . . . . . .

Local IP address . . . . . . .

Remote IP address . . . . . . (if you know the TCP/IP address of the PC that will drop, type it here; otherwise, leave it blank)

Line description . . . . . . .
4. Press Enter to start the trace.
5. Once the problem happens again, stop the trace. Then, on the operating system command line specifying the following:

TRCCNN

Press F4 to prompt the command. Then, specify the following:

Trace option setting . . . . . . *OFF
Trace table name . . . . . . . . IBM (or whatever unique label was entered above when the trace was started)
Trace data to be formatted . . . *CALC
Coded character set identifier *EBCDIC

Press the Enter key.
6. Send the resulting trace file (QSYSPRT) IBM Support using the upload Web site at this address:

www.ecurep.ibm.com/app/upload

[{"Type":"MASTER","Line of Business":{"code":"LOB57","label":"Power"},"Business Unit":{"code":"BU058","label":"IBM Infrastructure w\/TPS"},"Product":{"code":"SWG60","label":"IBM i"},"Platform":[{"code":"PF012","label":"IBM i"}],"Version":"7.1.0"}]

Historical Number

329656542

Document Information

Modified date:
13 April 2021

UID

nas8N1016231