OS/390 Corner

I currently make my living supporting, among other things, IBM S/390 computer systems. This page contains some items that might be of use to others in this field

IBM/Cisco Router Interoperability - An Example

I have had to integrate Cisco routers into an all IBM network including IBM 2212 routers. This document describes the Cisco configuration file used to provide IP and SNA connectivity between a Cisco 2610 and an IBM 2212.


z/OS 1.4 Telnet LU Selection Exit

Communications Server for z/OS 1.4 includes a number of improvements to the TN3270 server. Among the changes is a new exit to provide more flexibility in selecting LU names. Experiences with this exit are described here.


Software Downloads

z/OS TNEXIT is a sample LU selection exit for the z/OS 1.4 TN3270 telnet server
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OS/390 IEFUSI is an SMF exit used to override the region size for a job step. This version while specific to a particular sites needs, may be useful as a starting point for writing your own.
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RACFXREF is a program to produce a cross reference of rules used by userids and groups. A list of rules for which there is no matching group or user is also displayed. This program was knocked up in a hurry, and it shows ! My current shop uses ACF2 so I have not tested it recently. If nothing else, it is an example of how to use the ICHEINTY macro.
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ROPMONT This program alerts the system operator when one or more address spaces are not running. While it may not be useful in your environment, it serves as a good example of how a program can respond to Modify and Stop commands using the QEDIT macro.
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GENOAT is a Rexx program that is used to generate an OAT (OSA Address Table) required to configure an Open Systems Adapter. Along with the Rexx source is sample input and output.
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CICS Stuff ISSIGN is a CICS signon program. This program was originally written to replace the then, very limited IBM supplied program. It was last tested under CICS Version 4.1
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