Fun with Energy Efficient Ethernet Poweredge 720 I350 Controller

After purchasing two dell 720 machines for a project at work, I went around setting the machines up in a very basic Pacemaker cluster. Just one problem the network interface between the machines (crossover cable) would shut itself down. But the connection to the switches would be fine. The only way to get it going again was a ifdowm amd ifup, after scratching my head and looking through the device driver.