How to determine if 2 IPs are on the same subnet

[sandal]

Hi all!

I have a Client/Server connection on a network, and I wish to determine whether they are part of the same subnet.

The server is installed on a NI cFP-2220, so I can not use any system exec commands to access the network settings.

My code so far is just determine whether the client and server are both on localhost.

Please see attachment!

Regards

Paul

 

[bruno_costa]

Hi,

I will try aswer.

Lets M as Local Host Subnet mask,

       H as Local Host IP and

       R as Remote Host IP

Do the bitwise oprations

 (H and M) xor R

If 0 then the Subnets of Remote and Local hosts are same.

[sandal · Accepted solution]

Hi!

Thanks for replying.

After searching google, I think this is the right way to do it: (Ref)

(M and H) xOR (M and R)

Thank you for leading me on the right track!

Regards,

Paul