Obtaining the IP Address of a NIC

[Marty_H]

Hi,

I want to communicate to an Ether I/O 24 device over UDP.  I am using a DHCP server to automatically give me an IP address for it.  How can I get the IP address of this device in LabVIEW 8.6?  I have done some searching and I can't seem to find exaclty what I want.  The VB .exe that came with the device has a function called scan for modules and it returns the IP address with the MAC address.  The PC I am using has two NICs and the module is on subnet 255.255.0.0

Any help appreciated.

[rolfk]

This is usually done by proprietary UDP broadcasts to the devices which recognize the specific packet format and answer with a packet that specifies their own IP address and other information. There is no generic way to find out the IP address of a network device.

[altenbach]

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@marty H wrote:

The PC I am using has two NICs and the module is on subnet 255.255.0.0

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I assume this is the subnet mask, not the subnet address.

I would use wireshark and do a packet capture when running the VB.exe. See if you can duplicate the communication in LabVIEW later.