by Johannes Helmig [Published on 28 June 1998 / Last Updated on 28 June 1998]

In small networks, all systems are connected to the same network cable:

The communication between any 2 systems uses the standard components of Windows Networking:

When working on system#1 (using the Network CLIENT) and accessing data on System#2 (made available via a Network SERVER) , the connection is made via the Network-protocols and Network Adapters on both systems.

But networks grow, requiring the use of MULTIPLE Network cables or the need for different types of Network Media (like: modems, ISDN,....):

Now, some systems (like #2 above) have multiple Network Adapters and any communications from system#1 to #3 and #4 has to go via System#2, which has now the additional job of forwarding/passing on Network communication.
Such a forwarding is called : Routing
Now, additional functionality in the Windows Networking is required:

The PROTOCOL component of the Router (#2 above) needs to be able to handle this forwarding. Now the proper selection of the Network protocol is important:
- NetBEUI is NOT able to route and CANNOT be used in such configurations
- IPX/SPX and TCP/IP allow routing.

There can be multiple Routing on Networks:

and when using TCP/IP on the Internet, there can be 10 or more routers involved for a connection to a specific site.

Setup TCP/IP Routing

See Also

The Author — Johannes Helmig

Dr.Johannes Helmig is working as Director, Technical Knowledge Management in the Belgium office of Gerber Technology where he is involved in Customer Service and internal training, with special interest in Networking.


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