MS-DOS/OS/2 LAN Man 2.x 3Com 3+Open 1.1 Interoperability

ID: Q65203

The information in this article applies to:

Microsoft LAN Manager, version 2.0

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):
netX = netbeui$,0

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.

Additional query words: 2.00 2.10 2.10a 2.20

Keywords :
Version : :2.0
Platform :
Issue type :