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I am trying to setup a Windows NT (workstation) machine with two network cards, both with TCP/IP stacks to communicate with two separate networks. <br />
<br />
At the moment I can only communicate over the &quot;first&quot; network card in the machine. The second network card will only work if I physically remove the first network card. (If it matters, both cards are 3Com Etherlink XL's)<br />
<br />
Is it possible to setup two network cards on Windows NT 4.0 machine so that both communicate over TCP/IP concurrently?<br />
<br />
If so, do I need to change any registry settings to get it to work or do I need any special setup of routing/IP addresses?<br />
<br />
Also, on a related point, is it possible to set up two network cards connected to the same network (at two different points) to provide a redundant ethernet? <br />
In this case, if one of the network cards or cables failed is it possible to get NT to automatically switch over to the other card and continue to operate?<br />
<br />
Thanks in advance for any information.<br />

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I am trying to setup a Windows NT (workstation) machine with two network cards, both with TCP/IP stacks to communicate with two separate networks. 

At the moment I can only communicate over the "first" network card in the machine. The second network card will only work if I physically remove the first network card. (If it matters, both cards are 3Com Etherlink XL's)

Is it possible to setup two network cards on Windows NT 4.0 machine so that both communicate over TCP/IP concurrently?

If so, do I need to change any registry settings to get it to work or do I need any special setup of routing/IP addresses?

Also, on a related point, is it possible to set up two network cards connected to the same network (at two different points) to provide a redundant ethernet? 
In this case, if one of the network cards or cables failed is it possible to get NT to automatically switch over to the other card and continue to operate?

Thanks in advance for any information.


Dual network cards and redundant networks?

The Windows operating systems have distinct methodologies for designing and implementing networks, and have specific systems to accomplish various networking processes, such as Exchange for email, Sharepoint for shared files and programs, and IIS for delivery of web pages. Microsoft also produces server technologies for networked database use, security and virtualization.