SUMMARY
The information listed below applies to both OS/2 and DOS LAN Manager
versions 2.0, 2.1, 2.1a, and 2.2.
The current version of 3Com's OS/2 network operating system is 3+Open
version 1.1, based on Microsoft DOS / OS/2 LAN Manager version 1.01.
In order for a session to be established between a 3+Open 1.1 network
node (server or workstation) and a Microsoft DOS / OS/2 LAN Manager
version 2.x network node, both nodes must be configured to use the
same transport protocol.
Microsoft MS-DOS / OS/2 LAN Manager versions 2.x include the NetBEUI
2.x transport protocol.
3+Open 1.1 includes the following transport protocols:
NBP
3Com XNS*
DLC
Madge NetBEUI [MNETB] (requires DLC)
* On a DOS workstation, 3Com's XNS can be installed as a full
protocol, or can be "demand loaded" via 3Com's Demand Protocol
Architecture. The demand loaded version cannot be used as a
transport for DOS / OS/2 LAN Manager. It is mainly used to allow
primary NBP transport users to access 3Com's XNS based mail and
internet services.
The following is a list of options for transport protocol matching to
allow interconnection between 3+Open 1.1 and DOS / OS/2 LAN Manager
version 2.x nodes:
- Using NetBEUI on the MS-DOS / OS/2 LAN Manager nodes and MNETB on the
3+Open nodes
- Undesirable for 3+Open DOS workstation users in that MNETB,
along with the required DLC layer, takes up a considerably large
amount of RAM (67K more than NBP) and is quite slow.
- Necessitates support of two different NetBEUI transport
implementations.
- NBP on all nodes
- NBP is NOT compatible with NetBEUI. NetBEUI is a standard
transport in Microsoft DOS / OS/2 LAN Manager version 2.x, and in
most OEM (original equipment manufacturer) DOS / OS/2 LAN Manager
implementations (ATT, NCR, IBM, etc.). It is easier for Microsoft
and its OEMs to support NetBEUI.
- You may need to obtain permission from 3Com to use NBP as a
primary transport on DOS / OS/2 LAN Manager version 2.x.
- The DOS NBP that is included with 3+Open 1.1 will work with DOS
LAN Manager version 2.x. However, the OS/2 NBP included with
3+Open 1.1 WILL NOT work with OS/2 LAN Manager version 2.x. You
are required to use the OS/2 version 1.21 compatible version of NBP.
- DOS NBP uses 13K to 14K less RAM than NetBEUI.
- Using NetBEUI on all nodes
- Sanctioned and supported by Microsoft.
- Maintains transport compatibility with most current and future
OEM implementations.
- Microsoft LAN Manager development reports that internal testing
shows that NetBEUI 2.x is slightly faster than NBP.
- Works properly with 3+Open 1.1 demand loaded XNS.
- Using mixed NBP and NetBEUI
Install NBP (OS/2 version 1.21 compatible version), in addition to
NetBEUI, on all OS/2 LAN Manager version 2.x servers leaving NBP
on 3+Open 1.1 workstations and NetBEUI on OS/2 LAN Manager version
2.x workstations.
-or-
Install NetBEUI, in addition to NBP, on all 3+Open 1.1 servers,
leaving NBP on 3+Open 1.1 workstations and NetBEUI on OS/2 LAN
Manager version 2.x workstations.
- All workstations could communicate with all servers, but OS/2
LAN Manager version 2.x workstations could not communicate with
3+Open 1.1 workstations.
Listed below are the procedures for installing NetBEUI on 3+Open 1.1
nodes that have been previously configured with NBP, or NBP with XNS.
On a 3+Open DOS Enhanced Workstation, do the following:
- Remove the NBP line from the AUTOEXEC.BAT file.
- In the CONFIG.SYS file, add the following line after the MAC driver
device line:
DEVICE=C:\3OPEN\DOSWKSTA\LANMAN\DRIVERS\NETBEUI.DOS - Copy NETBEUI.DOS into the C:\3OPEN\DOSWKSTA\LANMAN\DRIVERS
subdirectory. You can find NETBEUI.DOS in a DOS LAN Manager version
2.x workstation's LANMAN.DOS\DRIVERS\PROTOCOL\NETBEUI directory.
- Edit the PROTOCOL.INI file. Since there is already a [NETBEUI]
section for MNETB, add a new section with a new name. For example:
[NETBEUI2]
DRIVER = NETBEUI$
BINDINGS = ETHERLINKII
* BINDINGS should be the same as BINDINGS in the [NBP] section.
- Reboot the workstation.
On a 3+Open OS/2 workstation or server, do the following:
- In the CONFIG.SYS file, add the following line after the MAC driver
device line:
DEVICE=C:\3OPEN\SERVER\LANMAN\DRIVERS\NETBEUI.OS2 - Copy NETBEUI.OS2 into the C:\3OPEN\SERVER\LANMAN\DRIVERS
subdirectory. You can find NETBEUI.OS2 in an OS/2 LAN Manager
version 2.x workstation's LANMAN\DRIVERS\PROTOCOL\NETBEUI
subdirectory.
- Edit the LANMAN.INI [networks] section. Add the following line
(where X = next available net number):
- Edit the PROTOCOL.INI file. Since there is already a [NETBEUI]
section for MNETB, add a new section with a new name. For example:
[NETBEUI2]
DRIVER = NETBEUI$
BINDINGS = ETHERLINKII
* BINDINGS should be the same as BINDINGS in the [NBP] section.
- Shut down and reboot the workstation/server.
Interadminability
A 3+Open 1.1 server can be fully administered from an MS-DOS / OS/2
LAN Manager version 2.x workstation via the command line or the NIF.
Supported administrative functions are the same as in MS-DOS / OS/2
LAN Manager version 1.01.