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Connect Windows System To Another Via Crossover While Staying on LAN

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Last Modified: 2016-03-12
Hey Guys -

I've got a PC at home which has a massive amount of data on it which I need to copy to another PC which has an equally large drive pool.  Instead of transferring all of the data through my consumer router, I decided to connect the two using a crossover cable as both systems have two NICs.

Both systems had a single NIC which were on my home subnet - 192.168.0.x - which were set statically.  I plugged in the crossover cable between each systems' 2nd NICs and statically set one to 10.25.25.1 / 24 and the other to 10.25.25.2 / 24.  I set 10.25.25.1 for the default gateway.  When doing so, I get the warning message that the default gateway cannot be different, but click OK anyways.

With this configuration (no firewalls enabled), I was able to ping 10.25.25.2 from 10.25.25.1, but not vice vera.  As I have an FTP server on my initial server, I added a listener in my FTP server for the 10.25.25.2 NIC and using SmartFTP on .1, was able to connect to it.  I started a transfer which copied / downloaded a few small files then froze.

Obviously, something I'm doing isn't working correctly as I couldn't ping in one direction.  I tried setting the adapters to use 1Gbps Full duplex as well as Auto with similar results.

My Questions
1. How can I configure this to work using a crossover plus ensuring that at least my system (.2) stays online / connected to my LAN at the same time?  Is this even possible and if so, would they have to be on the same subnet as the other NIC?
2. Do you have a suggestion for another method other than crossover / FTP to transfer ~15tb of data between two systems where one stays up and online 100% of the time?

Both systems run Windows 8.1 x64

Thanks Guys!
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