Can't open TCP connection when two network adapter are enabled

Hi all,
I've an applicaiton that connect using "TCP Open Connection". The applicaiton is running on a computer have two network adapters configured to be on two different network.
When I start the application, if both network adapters are enabled, connection is not created (timeout). When I disable the network adapter which is not configured for the network I need, connection is succesfull.
- How can I choose which adapter to use to open the connection, as LabView seems enable to select the good one.
- Or I can I disable a network adapter (just for the connection time)
I'm using LabView 8.5 Full on Windows XP.
Thanks for your help

This is generally a routing issue. The OS will route connections to your primary network if it is not a direct route. For example, one network is 10.3.4.x (primary network) and the other is 192.168.1.x.with a subnet of 255.255.255.0. Now, let's say you want to reach a device with an 192.168.2.x address. The OS will try to route this through the primary network but is has no route to reach the 192.168.2.x subnet. Therefore your connection fails. You can add a permanent route to your computer to force specific address ranges to specific NICs. Use the ROUTE ADD command which is part of the OS. If you are trying to reach the computer using a name instead of the IP address the issue is basically the same but a but more challenging to resolve. The OS will do th elookup on your defined DNS servers. They generally do not have knowledge of local private networks and therefore can't resolve the name. In this case you need to create a more involved network infrastructure to update the name server. Probably not something that is feasible to do.
Mark Yedinak
"Does anyone know where the love of God goes when the waves turn the minutes to hours?"
Wreck of the Edmund Fitzgerald - Gordon Lightfoot

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Attachments:
simple.read.vi ‏16 KB

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Copyright 2008 Sun Microsystems, Inc. All Rights Reserved.
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remote refid st t when poll reach delay offset disp
==============================================================================
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remote refid st t when poll reach delay offset disp
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remote refid st t when poll reach delay offset disp
==============================================================================
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remote refid st t when poll reach delay offset disp
==============================================================================
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++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
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Can't open TCP connection when two network adapter are enabled

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