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Microsoft Windows NT Networks

NOTE: Niakwa strongly recommends using the newer IP-based NT installation method when installing to Windows NT / 2000 servers. For more information, see the section titled NT Server Introduction.

NPL Release V is tested and supported on Microsoft Windows NT 4 and greater. This section describes the networking components and property settings in Windows NT required to establish NetBIOS communications with the Niakwa RunTime.

Configuring Windows NT Servers and Workstations

This section discusses the NetBIOS configuration requirements for NPL to operate correctly in a Windows NT environment. The following process applies to both Windows NT servers and workstations.

The network configuration screen can be displayed by choosing Network from the Control Panel. Select the protocols tab. The protocol list displays the installed networking protocols. The following items are NetBIOS drivers required in the protocol list for NPL to operate correctly.

NetBEUI Protocol

NWLink IPX/SPX Compatible Transport

NWLink NetBIOS

When you load NWLink, IPX/SPX Compatible Transport, and the NetBEUI protocols, Windows NT should automatically load NWLink NetBIOS. If the above protocols are not displayed, contact your system administrator to install the appropriate NetBIOS protocols.

NOTE: Other protocols may be listed in the protocols screen. The protocols referred to above are the required minimum for NPL to operate properly on an NT network. Other protocols such as TCP/IP are transparent to NPL and will not affect the operation of the RunTime.

This is a NetBIOS type network so NIAKNETB.COM must be used with DOS RunTimes for NPL to lock files and track terminal numbers correctly. Refer to the section entitled Configuration Parameters for details on launching the NetBIOS TSR.

Occasionally, even if properly configured, the RunTime may experience difficulty authenticating with the NT server from some NT workstations, resulting in an erroneous "Number of Authorized users exceeded" error message. This problem is typically related to the Lana Number configuration of NetBIOS on the NT workstation, if the first Lana number is bound to a wide-area network. To correct this problem on an NT 4.0 system:

1. Log in as administrator,

2. Open Properties of Network Neighborhood (or open the Control Panel/ Network applet).

3. Click the Services Tab,

4. Click on NetBIOS Interface,

5. Click the Properties... Button,

6. The network route associated with Lana number 000 should be:

NwlnkNb-> NwlnkIpx

or

Nbf->(your network Card Name).

If Lana number 000 is to "NetBT->(something), it needs to be adjusted.

Niakwa strongly recommends that the network route associated with Lana number 000 be "NwlnkNb-> NwlnkIpx". This is consistent with past recommendations for Windows for Workgroups. However, before adjusting Lana 000, you should check a working NT system to make sure you are in sync with other NT systems on the network.

WARNING: Under no circumstances use a network route containing NetBT or Wan in the name.

To correct the Lana Number:

1. Highlight the 000, and click the Edit Button.

2. Change the number to a high value (say, 9).

3. Highlight the number next to NwlnkNb-> NwlnkIpx, and edit this to say 0. To keep things tidy, you could change the 9 to keep all the numbers sequential. After you close the Networks dialog, you will need to restart the machine for the change to take effect.

Windows 95/98 Workstations

This section discusses the NetBIOS configuration requirements for NPL to operate correctly from a Windows 95/98 workstation attached to a Windows NT environment.

The network configuration screen can be displayed by choosing Network from the Control Panel. The list of networking components installed should appear similar to:

Client for Microsoft Networks
(Your Network Adapter is shown here)
IPX/SPX Compatible Protocol
NetBIOS support for IPX/SPX Compatible Protocol
NetBEUI
File and Printer Sharing for Microsoft Networks

If the above protocols are not displayed, contact your system administrator to install the appropriate NetBIOS protocols.

NOTE: Windows 95/98 does not automatically select a default protocol for you. In the Properties section for the IPX/SPX Compatible Protocol verify that the following 3 options are selected:

1) I want to Enable NetBIOS over IPX/SPX.

2) Set this protocol to be the default protocol.

3) In the Bindings setup, choose all the components to communicate using the NetBIOS protocol.

You must then restart the computer for the new settings to take effect.

This is a NetBIOS type network so NIAKNETW.DLL must be enabled for NPL to lock files and track terminal numbers correctly. Refer to the section entitled Configuration Parameters for details on launching the NetBIOS TSR.