IP not being recognized

I have 5 IPs attached to my server - After an upgrade of the processor and motherboard in the machine (as well as some processes going insane), one of the IPs stopped being recognized outside of the machine. The IP was still attached to the machine, but it goes nowhere when someone attempts to access it, even from the local network. I attempted removing the IP and then re-adding it, but the problem is still happening. Any ideas as to what could've caused this, and what I can do to fix it?

Thanks,
Josh

 

 

 

 

Top