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    The CentOS machine is connected to switch 1 just so that we can quickly transfer files between the CentOS machine and the RHEL machines. The CentOS machine is connected to Switch 2 because our department IT won't let it be connected to switch 1. - These two statements contradict each other. Commented Apr 16, 2014 at 21:59
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    What have you tried and what did not work? This is a bog-standard network design for multihoming a system to multiple networks, there's nothing out of the ordinary I can see here. Commented Apr 16, 2014 at 22:08
  • I don't see where you describe any problem. You say you tried setting both NICs to different static IP addresses. Presumably that didn't work or you wouldn't be asking the question, right? So what went wrong? What is the actual problem? Are these two different networks or are these two switches in turn switches to each other? Commented Apr 16, 2014 at 22:44
  • @DavidSchwartz, The CentOS computer doesn't have access to the DHCP server through switch 1. All of the RHEL machines through switch 1 are connected to the same DHCP server and we don't have administrative access to it. The problem is we can't connect the CentOS computer directly through switch 1 to the RHEL computers. Commented Apr 16, 2014 at 23:07
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    Ask for an IP address on the same subnet as the RHEL machine you want to talk directly to. If that's not an option, then you'll need to give up the desire to talk directly and talk to it through a router between the two subnets. Commented Apr 16, 2014 at 23:30