Application Note for AVM Network Distributed ISDN for Windows NT v1.0
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Application Note 05/97
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Network Distributed ISDN for WindowsâNT Version 1.0
In the current version (1.0) of Network Distributed ISDN for Windows NT, communication between the client module (NDC) and the NDI server is based on the IPX/SPX transport protocol. In the Windows NT Network manual, Microsoft states „...not only does IPX/SPX provide connectivity to NetWare networks, but it is also a fast LAN transport protocol suitable for Windows networks.“
IPX Configuration in homogenous Microsoft Networks.
There are a number of configuration issues which need to be resolved in order for the communication between client and server to function correctly. The main cause of problems concern IPX network addressing.
The IPX network address identifies a single IPX network. In heterogeneous network environments, which already contain IPX (e.g. Novell NetWare) servers, Windows NT can detect and automatically configure itself to use the IPX network address already in use. In a pure Microsoft environment, however, where IPX has not yet been implemented, an IPX network address must be configured manually. The only way to do this under Windows NT, is to manually configure a frame type for the network adapter and assign an IPX network address.
IPX servers can also configured with an internal IPX number that is similar to the network address, but which identifies the processes or services „inside" the server. This number must be unique for each IPX server throughout the entire network. Although it is not imperative to assign an internal network number to the NDI server, it is strongly recommended that you do so. This will make it easier should you wish to add further NDI or other IPX servers at a later date.
NDI Server Configuration
As specified in the NDI manual, there are a number of services and components which must be installed on the Windows NT server/workstation where NDI is running. All of these components are included on the Windows NT 4.0 server CD and do not need to be acquired additionally.
These components are :
NWLink IPX/SPX-compatible Transport (NWLink)
The Windows NT implementation of the IPX/SPX protocol. NWLink provides connectivity between Windows NT computers and Netware clients and servers. NWLink is simply a protocol and as such can also be used to establish connections between computers running Windows NT Server or Windows NT Workstation, MS-DOS, OS/2 and Microsoft Windows.
RIP for NWLink IPX and SAP Agent
IPX uses RIP and SAP, to carry out certain network layer (OSI model) functions. These functions include addressing, routing and the passing on of information between computers in a network.
In order to install these components, please carry out the following steps:
Please Note: If you install these components from the original NT 4.0 CD-ROM and are already using Service Pack 2, it will be necessary to re-install Service Pack 2 once these changes have been made.
Open the the network control panel by either clicking on the Network Neighbourhood icon with the right mouse button or via the Start => Settings => Control-Panel => Network Neighbourhood, and click on the Properties option.
Choose the Protocols property sheet and click on the Add button. Choose the NWLink IPX/SPX compatible Transport from the list that appears and click on OK.
Choose the Services property sheet and click on Add. Choose the RIP for NWLink entry and click on OK.
You will now be asked whether you wish to activate NetBIOS-Broadcasts (Type 20) for the RIP for NWLink protocol. Please click on Yes.
Please check the list of installed Services to ensure that both RIP for NWLink and the SAP-Agent (automatically installed with RIP) are now present.
Click on the Protocols property sheet once again and double-click on the NWLink IPX/SPX compatible Transport.
Click on the Manual Frame Type button and click on the Add button.
Choose the relevant frame type for your network from the drop down list and assign a unique 8 digit IPX address. Please avoid using the values 00000000 and 00000001. Click on Add.
Please Note: It is also strongly recommended that you assign a unique 8 digit internal network number. Please ensure that this number differs to the IPX network address.
10. Click on OK twice. You will now be asked whether you wish to restart the system, in order for the changes to take effect. Confirm by clicking on Yes.
NDC Client Configuration. Windows 3.x
In order to enable successful communication between an NDC client under Windows 3.x and the NDI server, please carry out the following steps:
Double-click on the Network Setup icon in the Network program group.
Click on the Driver button. Please ensure that you are using an NDIS3 compliant driver for your network adapter.
Click on the Add Protocol button. From the list that appears, choose the IPX/SPX compatible Transport with NetBIOS entry and click on OK.
Highlight the IPX/SPX compatible Transport with NetBIOS entry and click on Settings.
Highlight the Frame Type entry and click on the Value button. Choose the relevant frame type for your network from the drop-down list that appears and click on the Confirm button.
Click on Close and then on OK.
The changes you have made will be updated in the relevant configuration files – you may be asked to insert the operating system installation CD-ROM or diskettes during this process. You will then be asked whether you wish to reboot your system – click on Yes.
Please refer to the NDI Manual for further information on how to install and use the NDC client software.
Windows 95
In order to enable successful communication between an NDC client under Windows 95 and the NDI server, please carry out the following steps:
Click on the Network Neighbourhood icon with the right mouse button and select Properties.
Choose the Configuration property sheet and click on Add. Choose the Protocol option and click on Add.
From the list of manufacturers which appears, select Microsoft and double.click on the IPX/SPX compatible Protocol entry.
Please Note: The following steps (4 - 6) are optional and are only necessary if you are experiencing problems setting up a connection between NDC and the NDI server.
Typical problems include a) NDC cannot find the NDI server
NDC cannot connect to the NDI server.
In most cases however, the default settings (Frame Type => Auto and Network-Address => 0) should function correctly. In this case you may proceed to step 7.
Click on the Advanced Configuration property sheet and choose the Frame Type entry from the list of Properties.
Choose the frame type relevant to your network and click on OK.
Select the Network Adddress entry from the list of Properties and enter the same 8 digit IPX address that you assigned to the network on the NDI server.
Note: Do not confuse the network address with the internal network number.
Click on OK twice. Windows 95 will update the configuration information and you will be asked whether you wish your workstation to be rebooted in order for the changes to take effect. Click on Yes to confirm.
Please refer to the NDI Manual for further information on how to install and use the NDC client software.
Windows NT 4.0
In order to enable successful communication between an NDC client under Windows NT and the NDI server, please carry out the following steps:
Open the the network control panel by either clicking on the Network Neighbourhood icon with the right mouse button or via the Start => Settings => Control-Panel => Network Neighbourhood. Double-click on Properties.
Select the Protocols property sheet and click on the Add button. Choose the NWLink IPX/SPX-compatible Transport entry from the list that appears and click on OK. You will now be asked to insert the Windows NT installation CD into the CD-ROM drive.
Please Note: The following steps (4 - 6) are optional and are only necessary if you are experiencing problems setting up a connection between NDC and the NDI server.
Typical problems include a) NDC cannot find the NDI server
NDC cannot connect to the NDI server.
In most cases however, the default setting (Frame Type => Auto) should function correctly. In this case you may proceed to step 6.
Select the NWLink IPX/SPX compatible Transport entry and click on the Properties button.
Choose the frame type relevant to your network from the drop-down list. Please ensure that it is the same frame type that you enabled on the NDI server.
Enter the same 8 digit IPX address, which you assigned to the network on the NDI server, in the Network Number box.
Note: Do not confuse the network address with the internal network number.
Click on OK twice. Windows NT will update the configuration information and you will be asked whether you wish to reboot your workstation, in order for the changes to take effect. Click Yes to confirm.
Please refer to the NDI Manual for further information on how to install and use the NDC client software.
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