Use IBM's LAN Server to Connect to LAN from OS/2 and VDM

ID: Q99652

The information in this article applies to:

Microsoft LAN Manager, version 2.2

SUMMARY

LAN SERVER CONNECTION FROM OS/2 2.0's VDM

In a system running LAN Manager 2.2 on the server and LAN Manager 2.2's client for IBM OS/2 2.0, you can initiate connections to the server while running an OS/2 session (for example, with a NET USE command), but not while running in OS/2 2.0's Virtual DOS machine (VDM) or Windows Subsystem. Although a VDM has full access to LAN resources such as network drives, the VDM has no LAN redirector loaded, so it cannot initiate a LAN connection.

USE OS/2 LAN REQUESTER

To achieve LAN connectivity from both OS/2 and VDM sessions, use IBM's OS/2 LAN requester. This provides a NetBIOS session in each VDM, upon which the IBM DOS LAN requester may be loaded, allowing NET USE commands to be initiated from the VDM.

PROCEDURE

To do this in a LAN server environment, load the virtual NetBIOS driver (using OS/2 CONFIG.SYS) to provide NetBIOS support in each VDM. Run SETUPVDD.EXE, which adds the Virtual NetBIOS device driver (LANVDD.OS2) to CONFIG.SYS.

Then install the DOS LAN requester (DLR) on each VDM. (Note that there is no requirement for LAN support program.) When the requester is installed, add the entry NET START RDR (with the appropriate command line switches) to the AUTOEXEC.BAT that is executed by the VDM.

The virtual NetBIOS driver "talks" to the OS/2 protect mode NetBIOS interface, which in the case of IBM's LAN Server is configured by means of LAPS (LAN Adapter and Protocol Support).


    VDM   DLR                 OS/2 LAN requester
                    |                |
           virtual NetBIOS           |
                    |                |
                  OS/2 protect mode NetBIOS
                                |
                     OS/2 LAN Adapter and Protocol Support

Additional query words: 2.20 2.2

Keywords : kbnetwork
Version : :2.2
Platform :
Issue type :