ptx/SNA TN3270 V4.6.0 Release Notes


Introduction

These release notes support Version 4.6.0 of the ptx®/SNA TN3270 software. Read this document before installing this software on your NUMA-Q® or Symmetry® systems.

The software installation procedure is documented in the DYNIX/ptx® and Layered Products Software Installation Release Notes. Read these release notes thoroughly before installing the ptx/SNA TN3270 software.


Product Compatibility

The following software products are prerequisites for the ptx/SNA TN3270 V4.6.0 software:


New Features in This Release

ptx/SNA TN3270 V4.6.0 will now run in a threaded environment. However, the product does not support threaded operations.


Software Installation

ptx/SNA TN3270 is a layered software product. Layered product installations are described in the DYNIX/ptx and Layered Products Software Installation Release Notes. Perform all of the necessary steps in these release notes and also do the following steps when you install the software packages:

  1. Select the ptx/SNA TN3270 product. The package name for this software is BrxTN3270.

  2. Select the ptx/SNA TN3270 Server if applicable. The package name for this software is BrxTelnet.

  3. Check the following table, which lists all of the package names and the corresponding directories and files:

    Application Tape

    Package Name

    Directory/Files

    ptx/SNA TN3270

    BrxTN3270

    /usr/local/brixton/BrxTN3270/* /usr/local/brixton/BMD/B327_msglib

    BrxTelnet

    /usr/local/brixton/BrxTelnet/* /usr/local/brixton/BMD/B327_msglib


The installation procedure is now complete.


Starting ptx/SNA TN3270

Include the following in your path:

Refer to the following table when planning the number of processes for each TN3270 application you intend to use.

Product

Processes

ptx/SNA TN3270 (brxtn3270tty, brxtn3270x, brxtelnet)

1 per invocation

ptx/SNA EHLLAPI

1 per invocation



EHLLAPI Applications

After the ptx/SNA TN3270 product is installed from tape, entries are made in /etc/services for EHLLAPI sessions named a-z, A-Z, and 0-9.


ATTENTION

IBM® standards support only A-H for EHLLAPI sessions, which are also known as presentation space names.

brxehllapiA    5022/tcp
brxehllapiB    5023/tcp
.
.
.
.
.
brxehllapiH    5029/tcp
brxehllapiI    5030/tcp
brxehllapiJ    5031/tcp
.
.
.
.
.
brxehllapiZ    .......
brxehllapia    .......
brxehllapib    .......
.
.
.
brxehllapiz    .......
brxehllapi0    .......
brxehllapi1    .......
.
.
.
.
brxehllapi9    .......



Related Documentation

The following manuals may contain helpful information for the ptx/SNA TN3270 product:


Problem Report Summary



IND$FILE Uses Structured Query Mode (208988)

The IND$FILE file transfer program (pcft) is defined by IBM to use two modes of operation: Query Mode and Buffer Mode. ptx/SNA TN3270 only supports Query Mode file transfers. This means that the Query bit in the Presentation Services of the TN3270 LOGMODE table must be turned on.

This is a change from ptx/SNA 3270 V1.1 and previous releases that only supported Buffer Mode transfer. The host systems programmer must supply a LOGMODE that supports Query Mode transfers.

Workaround: None.


Invalid Data Can Be Displayed (211985)

When brxtelnet is being used to connect a TN3270 client to a host system, data may be displayed upon the user's terminal even though the SNA chain-of-data was rejected.

Workaround: None


The Terminal Can Hang (208813)

Switching to SSCP-LU sessions too often while data is flowing on the LU-LU session can cause the terminal to hang or cause an invalid state transition error and terminate the Telnet 3270 terminal emulator (brxtn3270tty or brxtn3270x).

Workaround: If the terminal process hangs, stop and restart the emulator.


The Terminal May Exit (208815)

In the transition period between logging off from an LU-LU session and being returned to the SSCP-LU session, if you hit a key, brxtn3270x may exit with the message Invalid FSM transition. Another symptom of this problem is that the emulation process can hang.

Workaround: Do not enter any keystrokes while an LU-LU session is being terminated.