EFS Systems on a Linux Base: Getting Started

Chapter 7. Basic discussions 73

You need to use :w! to save the file in vi, because it is a read-only file. Make these changes

carefully; there is one altered line and three new lines. Be careful not to make any other

changes unless you understand the format and functions of this file.

We changed the large Enter key on the PC keyboard to perform the 3270 New Line function,

the left Cntrl key to perform the 3270 Reset function, and the right Cntrl key to perform the

3270 Enter function. This is the most familiar keyboard arrangement for most 3270 users.

7.7 S/390 identification

You may need to supply the machine type and serial number of your emulated S/390. This is

often needed for S/390 software licenses or registration on various Web sites. With z/OS, the

easiest way to obtain this is with the d m=cpu console command:

d m=CPU

PROCESSOR STATUS

ID CPU SERIAL

0 + 00F0971245

CPC.SI = 1245.L02.FSI.FREM.000000000000F097

You can obtain the same basic information with a command from the flexes prompt:

flexes> display cpuid

CPUID=0a00f097 12450000

Both these displays indicate that the machine type is 1245 and the serial number is 00F097.

(If a machine

type-model number is needed, the model can be taken from the field containing

the L02 in the d m=cpu display.) IBM has reserved machine types 1245, 1246, and 1247 for

FLEX-ES emulated processors. Type 1247 is normally used for FLEX-ES systems obtained

through the IBM S/390 Partners in Development program. The serial number is assigned

through the FLEX-ES license code file and should be unique for each license.

The machine type and serial number are available through the S/390 instruction STIDP.

7.8 z/OS TCP/IP profile

This document is not intended to cover normal S/390 systems programming tasks. However,

the subject of the profile for z/OS TCP/IP arises so often that we include a typical listing for a

small EFS system. This is based on the profile for the AD CD-ROM 1.4s release, with all the

comment lines removed. Your needs may be different; this is offered only as a working

example.

ARPAGE 20

GLOBALCONFIG NOTCPIPSTATISTICS

IPCONFIG DATAGRAMFWD VARSUBNETTING SYSPLEXROUTING

SOMAXCONN 10

TCPCONFIG TCPSENDBFRSIZE 16K TCPRCVBUFRSIZE 16K SENDGARBAGE FALSE

TCPCONFIG RESTRICTLOWPORTS

UDPCONFIG RESTRICTLOWPORTS

DEVICE LCS1 LCS E20 AUTORESTART

LINK ETH1 ETHERNET 0 LCS1

HOME

192.168.0.121 ETH1

BEGINRoutes

; Destination Subnet Mask First Hop Link Packet Size

ROUTE 192.168.0.0 255.255.255.0 = ETH1 MTU 1500