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1991-04-05
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NetWare Asynch Remote Router
Rules of Thumb
Novell has endeavored to make the NetWare Async Remote Router reliable,
efficient, and easy to use. To aid you in configuring the Router for
optimal reliability and performance, we asked our engineers what components
they would use and what hints they would give if they were installing the
product. Here's what they said.
LAN to LAN Connection
The NetWare Async Remote Router connects two or more LANs, typically remote
from each other.
NEW FEATURES
This release of the Async Remote Router software contains the following
features:
<Support for
- V.32 modems
- 9600 bps Hayes and Telebit modems
- the WNIM+ adapter in 80386 based personal computers
- modems that require Data Terminal Ready (DTR) to hang up
- hardware flow control
<Improved reliability
NETWORK PROTOCOLS and LAN ADAPTERS
Novell NetWare network products are optimized for use with the IPX/SPX
protocol. For this reason, we recommend that you use IPX/SPX with the
Async Remote Router; NetBIOS is no longer supported. We also suggest that
you use LAN adapters from the recommended list in this document. Each has
been tested thoroughly with the Router.
PERSONAL COMPUTERS
For an external router (one installed in a LAN workstation), we recommend
any IBM PC/AT or compatible from the list of recommended PCs. If you
choose not to use one of the recommended machines, router performance may
be degraded.
The router PC should meet the following minimum requirements:
o Minimum of 512K RAM for a dedicated external router (real mode)
o Minimum of 640K RAM for a nondedicated external router (real mode)
o Minimum of 1MB RAM for a dedicated external router (protected mode)
We recommend a dedicated router for optimum system performance. You may
use the PC as a nondedicated external router and also as a workstation on
the LAN, but if you do so, you may not have sufficient memory to run
applications on the workstation. The router software (ROUTER.EXE) takes up
to 350KB of RAM, NET3 takes up about 20KB, and DOS takes up 40 to 60 KB, so
as little as 170KB may be available for applications.
For an internal router (one installed in a file server), we recommend a
minimum of 512KB of additional RAM. We do not recommend internal routers
because of potential file server problems if modems malfunction.
HARDWARE AND SOFTWARE RECOMMENDATIONS
The personal computers, LAN adapters, and modems listed below have been
tested by Novell and are recommended for use with the Async Remote Router.
Standard Test Bed Environment
Network Operating Systems
SFT NetWare 286 v2.12 and 2.15 E
NetWare 386 v3.0 (external router only)
Network Protocols
IPX/SPX
Personal Computers
IBM PC/AT (8MHz)
IBM PC/XT (4.77 MHz)
IBM PS/2 Model 30/286
Compaq DeskPro 386S
Compaq DeskPro 386/25
Compaq 386/20e
Compaq 386/16
Zenith Z-386AE
Novell 286B
Novell 386AE
LAN Adapters
Novell RX -NET
Novell NE1000
Novell NE2000
IBM token ring Adapter 16/4
Standard Microsystems Arcnet 100, 110, 120
Modems
Hayes SmartModem 2400
Hayes SmartModem V9600
Hayes V-series ULTRA 96
MulitTech MultiModem V.32
Telebit Trailblazer Plus
Telebit T1000
Telebit T2500
HOW TO CHOOSE A MODEM
Several factors may affect your choice of modems:
o Cost
o Error correction
o Data compression
o Speed
If cost is a concern, you may want to buy a high quality standard 2400 bps
modem from the list above and not worry about features such as error
correction or data compression. Such modems provide reliable service over
the high quality phone lines in most parts of North America, and
can achieve throughput of 120 to 240 characters per second with minimal
delays.
If you are concerned about reliability, you can purchase a modem that
supports error correction or data compression at 2400 bps.
If you do so, we recommend that you choose an MNP standard modem. With
error correcting protocols, you will experience far fewer, if any, errors
on your connection. You may notice a slight increase in response time due
to the data being organized into packets for error correction.
If speed is your greatest concern, choose one of the V.32 9600 bps modems;
performance suffers with most non V.32 9600 bps modems. V.32 modems are
full duplex and offer high throughput with no line turn around delay.
However, they are more expensive. Most V.32 modems offer error correction
and data compression and are compatible with 1200 bps and 2400 bps modems.
MNP Modem Configuration
When using modems that support MNP protocols, the modem response codes
should be set to Basic, not Extended.
Example setting: Microcom: ATX0
Failure to set for Basic Hayes type responses could cause the router to
hang.
SUPPORTED CONFIGURATIONS
This release of the Async Router supports the following configurations:
INTERNAL ROUTER
1 COM port and up to three LAN adapters
1 WNIM+ multiport adapter and up to three LAN adapters
Maximum of four communication lines
EXTERNAL ROUTER
Up to two WNIM+ multiport adapters and one COM port
One LAN adapter
Maximum of nine communication lines
CONFIGURATION NOTES
When configuring the Async Remote Router, ACONFIG and ROUTER.EXE must be in
the same directory.
OPERATION NOTES
If you are installing this release of the Async Remote Router software on a
PC that has a previous release of the router software already installed,
you must delete the older release and reboot the PC before you install the
new software.
LIMITATIONS
This release of the Async Router software has the following limitations:
o It supports the COM1 and COM2 ports only up to 2400 baud.
o If you are using Telebit T1000 or T2000 modems, you must disable hardware
flow control.
o For Telebit T1000 & T2000 modems, the Reset option of LCONSOLE does not
operate correctly.
o You can set Idle Time Out only to one minute.
o When using the COM1 or COM2 port and you want to set Not Enabled, you
must use the Special Configuration option.
o When you configure an internal router with a WNIM+ adapter, the router
aborts if the modem fails or you are using a modem that is not
supported.
o Each port on the WNIM+ adapter and each COM port must be configured with
a different server name because each is treated as a separate LAN.
o NetWare for the Macintosh is not supported across the Async Remote
Router.
o For WNIM+ adapter, all ports must be at same baud rate.
o In the "Special Configuration" modem type, the "Modem Initialization
String" option is not supported. Characters entered into this field
are NOT sent to the modem.
README FILE
Most products released by Novell include a README file to include up to the
minute corrections and additions, and to assist you in configuring and
troubleshooting. Please read this file before you attempt to install the
Async Remote Router as it will alleviate many problems during installation
and operation.