Could you define what a network ID is? And, does IPX/SPX use any kind of addressing? If so what kind does it use and could you give me a good example?
The network ID is the network portion of an IP address. For a class A network, the network address is the first byte of the IP address. For a class B network, the network address is the first two bytes of the IP address. For a class C network, the network address is the first three bytes of the IP address. In each case, the remainder is the host address.
IPX/SPX also uses Network ID?s but in a different fashion. Nodes are identified by a 6 byte number and a 4 byte network ID. The node ID is assigned by the underlying layers (e.g. the MAC address from Ethernet network cards).
The network ID is given by the Novell server to a workstation and has to be set in the file server by the administrator. The network number is also used by routers to forward packets to the right network.