The IPXNetworkNumber parameter specifies an array of characters that uniquely identify an adapter on the computer system. ...

The IPXNetworkNumber parameter specifies an array of characters that uniquely identify an adapter on the computer system. The NetWare Link (NWLink) IPX/SPX-compatible transport in Windows 2000 and Windows NT 3.51 or higher, uses two different types of network numbers. This number is sometimes referred to as the External Network Number. It must be unique for each network segment. The values in this string list must have a corresponding value in the IPXFrameType parameter identifying the packet frame type used for this network.