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TITLE: NetWare 5250 Gateway Rules of Thumb
DOCUMENT #: TD.S.R4
DATE: 4/91
PRODUCT: 5250 Gateway
PRODUCT VERSION: 2
SUPERSEDES: NA
Technical Discussion
Novell has endeavored to make the NetWare 5250 Gateway Version 2 reliable,
efficient, and easy to use. To aid you in configuring the NetWare 5250 Gateway
for optimal reliability and performance, we asked our engineers what components
they would use if they were installing the product, and to provide technical
tips for users setting up a 5250 Gateway. Here's what they said.
The 5250 Gateway Version 2 lets you use PCs on a NetWare LAN as if they were IBM
5250 devices. Through the 5250 Gateway Server, PCs on a LAN (5250 LAN
Workstations) can communicate with an IBM AS/400 or System/3X (S/3X) host just
like actual 5250 devices.
Users can also hot-key between host sessions and DOS and continue their work in
DOS.
The NetWare 5250 Gateway gives you two connectivity options:
> A local twinax connection option from the 5250 Gateway Server to an AS/400 or
S/3X
> A remote SDLC connection option from the 5250 Gateway Server to an AS/400 or
S/3X
TWINAX CONNECTION OPTION (7 Host Sessions)
With the twinax connection option, you use a twinax adapter and twinax cable to
connect the Gateway Server directly to the host or to a controller connected to
the host. The Gateway Server lets you distribute up to seven AS/400 or S/3X
sessions to workstations on the NetWare LAN. Each 5250 LAN Workstation can
access up to five of the seven available host sessions and one DOS session.
With the twinax option, you can also connect the Gateway Server to the host via
twisted-pair wiring, using a Novell Twinax Adapter for PC, baluns, and a
multiconnector. The baluns and multiconnectors that have been tested are listed
below.
SDLC CONNECTION OPTION (9 Host Sessions)
With the SDLC option, you connect the Gateway Server to the host through a
synchronous adapter and a modem line using the SDLC protocol. The Gateway
Server distributes up to nine concurrent IBM AS/400 or S/3X sessions to
workstations on the NetWare LAN.
Each NetWare 5250 LAN Workstation can access up to five of the nine available
host sessions and one DOS session.
Network Protocols and LAN Adapters
Novell NetWare network products are optimized for use with the IPX/SPX protocol.
This release of the 5250 Gateway supports IPX/SPX only. We also suggest that
you use the LAN adapters from the recommended list below because each has been
tested thoroughly with the product.
Twinax Adapters (Twinax Connection Option)
For the twinax connection, the Gateway Server PC requires one of the following
adapters:
> The Novell Twinax Adapter for PC (we recomend Revision F or higher of the
Novell Twinax Adapter for PC because it has been enhanced for higher clock
speeds)
> The Micro-Integration STWINAX MCA adapter (microchannel bus machines)
Remote Adapters (SDLC Connection Option)
For the SDLC option, the Gateway Server requires one of the following adapters:
o The Novell Synchronous Adapter for PC
o The Novell Synchronous/V.35 Adapter for PC
o An IBM Multiprotocol Adapter/A (for microchannel bus machines)
PERSONAL COMPUTERS
For the Gateway Server, we recommend any IBM PC/AT, IBM PS/2, or compatible from
the list of recommended PCs. Note that at this time, we cannot recommend the
use of the Zenith 386/33, the Samsung 3000V, the IBM PS/2 Model 30/286, or the
Epson Equity III as a Gateway Server, because each has failed to perform
consistently during initial testing.
For optimum performance, we recommend a 386/25 mHz machine. The Gateway Server
PC should meet the following minimum requirements:
o A minimum of 512KB of RAM
o A minimum clock speed of 8 mHz
o A maximum clock speed of 25 mHz
We recommend a dedicated Gateway Server for optimum system performance. Although
using a nondedicated machine for the server may reduce the amount of network
equipment used and save money, a dedicated server is faster and more reliable.
For the NetWare 5250 LAN Workstation, we recommend any IBM PC/XT, PC/AT, PS/2,
or compatible. A PC used as the LAN Workstation should have a minimum of 512KB
of RAM.
HARDWARE AND SOFTWARE RECOMMENDATIONS
The following is a list of operating systems, network protocols, connections,
PCs, LAN adapters, modems, and third-party software that have been tested and
are recommended for use with the 5250 Gateway Version 2.
Standard Test Bed Environment
Network Operating Systems
SFT NetWare 286 v2.15
NetWare 386 v3.1
NetWork Protocols
IPX/SPX
5250 Gateway Version 2 Connections Tested
Twinax Direct to the Host
Twinax to Controller
- IBM 5251 Model 12
- IBM 5294
- IBM 5394
SDLC to the Host
Twinax Adapter Boards Tested
Novell Twinax Adapter for PC
STWINAX MCA Adapter (microchannel machines)
Remote Adapter Boards Tested
Novell Synchronous Adapter for PC
IBM Multiprotocol Adapter/A
Novell Synchronous/V.35 Adapter for PC
Modems and Modem Eliminators (SDLC Option)
Universal Data Systems 208 A/B
Black Box SME-4 Modem Eliminator
Black Box SME-V.35 Modem Eliminator
PC USER SOFTWARE TESTED WITH ALL GATEWAY CONFIGURATIONS
The following PC software was tested with all gateway configurations.*
DaVinci Email ver. 1.60C
dBASE III ver. 1.1
COMPAQ MS DOS rel. 3.31
IBM PC DOS ver 3.30, ver. 4.0
Lotus 1-2-3 Networker rel. 2.01n
NetWare Menus 2.15 rev. C
WordStar ver.4.0
* These are only a few selected applications. With some applications, memory
conflicts may occur with large files or spreadsheets.
HOST SOFTWARE TESTED WITH ALL GATEWAY CONFIGURATIONS
IBM AS/400 Query
IBM AS/400 Utilities
o Business Graphics Utility (BGU)
o Source Entry Utility (SEU)
o Data File Utility (DFU)
o Interactive Data Definition Utility (IDDU)
o Screen Design Aid (SDA)
IBM DisplayWrite/36
IBM OfficeVision/400
IBM PC Support/36
IBM Personal Services/36
IBM Query/36
NOTE: IBM AS/400 PC Support is not supported at this time.
PERSONAL COMPUTERS
AT Bus Environment Microchannel Bus Environment
IBM PC/AT IBM* PS/2 model 50 Z*
IBM PS/2 Model 30 286 IBM PS/2 model 55 SX**
COMPAQ Deskpro 386s* IBM PS/2 model 60*
COMPAQ Deskpro 286n* IBM PS/2 model 70E61*
COMPAQ Deskpro 386/25* IBM PS/2 model 70A21***
COMPAQ Deskpro 386n* IBM PS/2 model 80*
COMPAQ Deskpro 20e*
Novell 386A
Zenith Z-386 SX***
* Tested as both a 5250 Gateway Server and a 5250 LAN Workstation.
** Tested with SDLC option only
*** Tested with twinax option only
LAN Adapters
The following LAN Adapters were tested.
AT Bus Environment Microchannel Bus Environment
Novell NE1000* Novell NE/2*
Novell NE2000* IBM Token Ring*
IBM Token Ring* IBM Token Ring II/A*
IBM Token Ring 16/4* IBM Token Ring 16/4/A*
IBM Token Ring II* SMC Arcnet PS 100 MCA
3COM 603 Tokenlink 3COM 523 Etherlink/MC*
3COM 501 Etherlink**
3COM 503 Etherlink
3COM 505 Etherlink
Novell RX-Net*
Proteon ProNet/4***
SMC Arcnet PC 110*
SMC Arcnet PC 120*
SMC Arcnet PC 210***
* Tested with both the 5250 Gateway Server and 5250 LAN Workstation
** Tested with SDLC option only
*** Tested with twinax option only
Display Adapters for 5292 Graphics Emulation
The following display adapters were tested with IBM 5292 graphics display mode,
and also with 5292 Model 1 color emulation.
Note that 5292 Model 2 graphics works only with the SDLC option. 5292 model 1
color emulation works with both the twinax option and the SDLC option. For the
correct adapter settings, refer to your adapter manual.
Ahead Systems VGA Enhancer Paradise VGA Plus
AST VGA Plus Quadram ProSync EGA
COMPAQ VGA Techmar VGA
Everex Viewpoint VGA STB Systems Multi Res II EGA
Genoa Super EGA Hres+ Vega Video Seven VGA
IBM VGA
Display Adapters for IBM 3180 Wide-Screen Emulation*
The following display adapters were tested with 3180-wide-screen display mode
and also with 5292 model 1 color emulation. Note that 3180 wide-screen mode
works only with the twinax option.
5292 model 1 color emulation works with both the twinax option and the SDLC
option.
Ahead Systems VGA Enhancer Genoa Super EGA HRes+
Ahead Systems VGA Wizard IBM VGA
3270 BIOS ver.201 Paradise VGA Plus
COMPAQ VGA Techmar VGA
Everex Viewpoint VGA
* The adapters above were verified to work with the manufacturers' settings for
27 x 132 column emulation. Refer to your adapter manual for the correct
settings. To display 132 columns, your NetWare 5250 LAN Workstation must be
defined as a 3180 display. Our tests were performed using a NEC/MultiSync 3D
or a Sony Trinitron CPD-1303 monitor.
3180 Settings for Color Monitors
We have tested the following display adapters for 3180 wide-screen mode with the
indicated settings for color monitors.
These settings are provided to aid you in configuring your adapter for 3180
wide-screen emulation. The settings may change as the manufacturers modify the
adapters. Therefore you should always consult your adapter manual when
configuring your system.
Graphics Adapter Mode Columns Rows BIOS REGEN BX
Function Buffer Opt
Num Adres Prm
Ahead Systems VGA Wizard 23 132 28 00 B800 0000
3270 BIOS ver. 2.01
Everex Viewpoint VGA 70 132 25 00 B800 000A
70 132 43 00 B800 000B
Genoa Super EGA 61 132 28 00 B800 0000
Paradise VGA Plus 55 132 25 00 B800 0000
54 132 43 00 B800 0000
Techmar VGA 17 132 25 00 B800 0000
Tseng Labs VGA/16 24 132 28 00 B800 0000
Video 7 Vega VGA 05 132 25 6F B800 0041
05 132 43 6F B800 0042
Video 7 Fastwrite VGA 05 132 28 6F B800 0045
Baluns and Multiconnectors
The following baluns and multiconnectors were tested with the NetWare 5250
Gateway (twinax option), using the IBM System/36.
For information on connecting the baluns and multiconnectors, refer to your
adapter manual, the multiconnector documentation, or the balun documentation.
Multiconnectors Baluns
Star-Tek Multiconnector, Model 299AT-1P Star-Tek Balun
Fibronics Balun,
FM036-RJ-7B IBM
5299 Terminal Multiconnector, Model 3 IBM Baluns
To Host(beige) Part#
69X7883
To Workstation (black)
Part # 96X6187
CONFIGURATION NOTES
IBM DOS 3.3, IBM DOS 4.0, MS DOS 3.3, or COMPAQ DOS 3.31 was used on all nodes
when applicable.
When you configure the IBM AS/400 for use with the 5250 Gateway Server, note
that for the twinax option, if the AUTOCONFIGURE parameter is set to ON, the
host automatically configures locally attached devices. However, if you set up
a connection through a 5250 controller, you must configure the SDLC controllers
and attached devices. If the AUTOCONFIGURE parameter is set to OFF, you
explicitly specify the primary station addresses for all of the devices that
will be emulated. For the SDLC option, you must always configure the devices on
the host.
We recommend that you use NetWare 5250 File Transfer for file transfers between
the host and the NetWare 5250 LAN Workstations.