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1991-01-26
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NOVELL NETWARE AND THE IBM AS/400
A few tweaks is all it takes to run concurrent NetWare and AS/4000 sessions
on a Token Ring LAN
By using IBM's PC Support AS/4000 program, PC users can run a NetWare
session at the same time as an AS/400 session. To make it work, though,
users must modify their CONFIG.SYS files prior to running the PC Support
program.
The two main steps consist of adding several device drivers to your
CONFIG.SYS file, then installing the PC Support program on your PC. Two
files are created when you run the installation routine:a CONFIG.PCS file
and a STARTPCS.BAT file. You'll need to obtain the appropriate
configuration information from the AS/400 administrator in order to
complete these steps.
GATHERING AS/400 INFORMATION
Before you do anything, you need to get four pieces of information from the
AS/400 administrator:
-The remote network identifier
-The remote control point name
-The remote adapter address
-The local adapter address
The first three come from the Advanced Program to Program Communications
(APPC) Communication Controller Description screens; the last one comes
from the Token Ring Line Description screens. These screens are viewed on
the AS/4000.
APPC CONTROLLER DESCRIPTION
Figure 1 shows an example of the APPC Controller Description screens on the
AS/400. Three seperate screens are shown together in the figure.
Take a look at the values shown for the "Remote network identifier"
(RMTNETID) and the "Remote control point name" (RMTCPNAME) on the second
screen. In the figure, they are the character strings "APPN" and "TOKEN".
These values must match the RTLN parameters in your CONFIG.PCS file. You
will be prompted to enter these values when you run the PC Support
installation program on your PC. (This program creates the CONFIG.PCS
file.)
Note also the value displayed on the third APPC Controller Description
screen for the "TRLAN remote adapter address" (ADP-TADR). In the figure,
this address is 400044440001. You will need to specify the remote adapter
adapter as a parameter for the DXMCOMOD.SYS driver in your CONFIG.SYS file.
***************************************************************************
FIGURE 1. SAMPLE APPC CONTROLLER DESCRIPTION ON the AS/400
Display Contoller Description - APPC
Controller description CTLD TOKEN1
Link type LINKTYPE *TRLAN
Online at IPL ONLINE *YES
Switched line SWITCHED
Short hold mode SHM
Switched network backup SNBU
Activate swt network backup ACTSNBU
APPN-capable APPN *YES
Attached nonswitched line LINE
Switched line list SWTLINLST
TOKEN
Attached devices DEV
TOKEN
---------------------------------------------------------------------------
Character code CODE *EBCDIC
Maximum frame size MAXFRAME 1994
Remote network identifier RMTNETID APPN
Remote control point name RMTCPNAME TOKEN
Exchange identifier EXCHID
Initial connection INLCNN *ANS
Connection number CNNNBR
Predial delay PREDIALDLY
Redial delay REDIALLDY
Dial retry DIALRTY
Remote autoanswer RMTAUTOANS
Switched disconnect SWTDSC *YES
Disconnect timer DSCTMR 170
Data link role ROLE *NEG
SHM disconnect limit SHMDSCLMT
SHM disconnect timer SHMDSCTMR
-------------------------------------------------------------------------
TRLAN remote adapter address ADPTADR 400044440001
TRLAN remote adapter address DSAP 04
TRLAN SSAP SSAP 04
TRLAN frame retry TRNFRMRTY 10
TRLAN connect retry TRNCNNRTY 10
TRLAN response timer TRNRSPTMR 10
TRLAN connection timer TRNCNNTMR 70
TRLAN acknowlegement timer TRNACKTMR 1
TRLAN inactivity timer TRNINACTMR 100
TRLAN ack frequency TRNACKFRQ 1
TRLAN max outstanding frames TRNMAXOUT 2
TRLAN access priority TRNACCPTY 0
APPN CP session support CPSSN *YES
APPN node type NODETYPE *ENDCODE
APPN transmission grp number TMSGRPNBR 1
Press Enter to continue
F3=Exit F12=Cancel
***************************************************************************
TOKEN RING LINE DESCRIPTION
Figure 2 shows an example of the Token Ring Line Description screens on the
AS/400. You need to define your Token Ring Line Description on the AS/400
if it's not already defined.
As you can see in the figure, the value of the "Local adapter address"
(ADPTADR) is 400003190001. You will be prompted to enter this value when
you install the PC Support program. It must match the information
parameter of the TRLI line specified in CONFIG.PCS.
***************************************************************************
FIGURE 2: A SAMPLE TOKEN RING LINE DESCRIPTION ON THE AS/400
Display Line Description - Token Ring
Line description LIND TOKEN
Resource name RSCRNAME LIN031
Online at IPL ONLINE *YES
Vary on wait VRYWAIT *NOWAIT
Network controller NETCTL
Maximum controllers MAXCTL 20
Maximum frame size MAXFRAME 1994
TRLAN Manager logging level TRNLOGLVL *OFF
Current logging level *OFF
Local adapter address ADPTADR 400003190001
Exchange identifier EXCHID 05600000
Source service access points SSAP
04
-----------------------------------------------------------------------
Error threshold level THRESHOLD *OFF
Link speed LINKSPEED 4M
Cost/connect time COSTCNN
Cost/byte COSTBYTE 0
Security for line SECURITY *NONSECURE
Propogation delay PRPDLY *LAN
User-defined 1 USRDFN1 128
User-defined 2 USRDFN2 128
User-defined 2 USRDFN3 128
Recovery limits CMNRCYLMT
Count limit *SYSVAL
Time interval
Text TEXT Token Ring Line
Description
Press Enter to continue
F3=Exit F12=cancel
***************************************************************************
MODIFYING CONFIG.SYS
Figure 3 lists a sample CONFIG.SYS file showing the modifications that must
be made. The device drivers come on the "LAN Support" diskette that
accompanies each Token Ring adapter. Your CONFIG.SYS must include all of
the drivers shown. The parameters that follow some of the drivers are
explained below. The "001" after the DXMAOMOD.SYS driver indicates that
the Token Ring adapter installed in the PC is a Primary Adapter.
The number after the DXMCOMOD.SYS driver (400044440001) is the "TRLAN
remote adapter address" from the AS/400 APPC Controller Description screen.
This address will overide the default address encoded on your PC's Token
Ring adapter.
The DXMTOMOD.SYS driver has five parameters, which are listed below:
> ES=2 indicates how many additional SAPs (Service Access Points) can be
requested by the NetBios Interface Device Driver when it implicity opens
the Token Ring adapter. Both NetWare and the PC Support program uses one
SAP each, so you need at least SAPs to run these two concurrently.
> EST=6 indicates the number of additional kink stations requested by the
NetBios Interface Device Driver when it implicity opens the Token Ring
adapter.
> S=8 indicates the number of NetBios Interface sessions that may be
defined.
> C=18 indicates the number of NetBios Interface Commands (NCBs) that may
be outstanding at one time.
> DS=2048 indicates the size of the Token Ring adapter transmit buffers
(DHBs) in bytes.
Note that the above information applies only to version 1.2 ofg the AS/400
Operating System. With version 2.0 you don't need to specify any
parameters following the DXMTOMOD.SYS driver. (For more information on
configuring the DXMTOMOD.SYS driver, consult your IBM Local Area Network
Support Program documentation.)
The "drives=" parameter for the ECYDDX.SYS driver indicates the number of
drives to be allocated to shared folders. This is a key value because, by
default, eight driver (drives D through K) are allocated to shared folders.
If you don't change the default, NetWare drive F will be shifted to drive
L. By changing this value to "drives=2," only drives D and E are allocated
to shared folders. NetWare will be able to use from drive F on as it
normally does.
***************************************************************************
FIGURE 3: NECESSARY MODIFICATIONS TO THE CONFIG.SYS file.
Files=20
Buffers=20
Device=\DXMAOMOD.SYS 001
Device=\DXMCOMOD.SYS 4000444400001
Device=\DXMTOMOD.SYS ES=2 EST=6 S=8 C=18 DS=2048
Device=C:\EIMPCS.SYS
Device=C:\ECYDDX.SYS files=8 drives=2
Device=C:\FSDD.SYS
***************************************************************************
INSTALLING PC SUPPORT AS/400
Next, you need to install the PC Support AS/400 application on a PC
connected to a NetWare LAN via a Token Ring adapter. (PC Support software
can run independent of a NetWare LAN).
Consult your "PC Support AS/400 User's guide" on how to run the INSTALL
command. The INSTALL routine creates a CONFIG.PCS file and places it in
the subdirectory C:\PCS (or in another subdirectory if you so specify).
Figure 4 shows a sample CONFIG.PCS file. You will be prompted for the
RTYP, RTLN, and TRLI parameters when you run the PC Support INSTALL
program. RTYP should always be "ITRN" for Token Ring Interface. The two
RTLN paqrameters should match the RMTNETID and RMTCPNAME values shown on
the AS/400. In our example, these "APPN" and "TOKEN".
The "400003190001" parameter shown for TRLI is the AS/4000 Token Ring LIne
address on the AS/400. All PCs on the LAN should use this line address
when they run a NetWare session.
**************************************************************************
FIGURE 4:CONFIG.PCS file created by the AS/400 PC Support Program
RTYP ITRN
RTLN APPN.TOKEN
TRLI NOVELL,400003190001
***************************************************************************
RUNNING THE PC SUPPORT PROGRAM
A batch file STARTPCS.BAT is created as part of the INSTALL process. (see
Figure 5).
Since with NetWare we are using only two drives (drives D and E) dor AS/400
shared folders, chheck your STARTPCS.BAT file and change any reference to
Drive I to drive D or E. (All such references in the sample batch file
have been modified to drive E).
Once you've made these changes to your batch file, type "STARTPCS" at your
PC to start the PC Support AS/400 program. For more information on the
STARTPCS.BAT file, consult your "PC Support AS/400 User's Guide".
***************************************************************************
FIGURE 5: The STARTPCS.BAT batch file created by the INSTALL program.
STARNRTR CONFIG.PCS ECHO OFF IF ERRORLEVEL 20 GOTO EXIT
ECHO ON
FSPC ASSIGN E:QIWSFLR
ECHO OFF
IF ERRORLEVEL 200 GOTO EXIT
ECHO ON
E:PCSUPDT E:\PCS
ECHO OFF
IF ERRORLEVEL 20 GOTO EXIT
ECHO ON
E:STARTMSG CONFIG.PCS
ECHO OFF
IF ERRORLEVEL 20 GOTO EXIT
ECHO ON
E:VPRT
ECHO OFF
IF ERRORLEVEL 200 GOTO EXIT
ECHO ON
E:WSF/T
ECHO OFF
IF ERRORLEVEL 20 GOTO EXIT
IF NOTERRORLEVEL 10 GOTO SKIP
ECHO ON
E:STARTWSF 1
ECHO OFF
:SKIP
ECHO ON
E:PCO CONFIG.PCS
ECHO OFF
:EXIT
ECHO ON
***************************************************************************