We have two Cisco C240 servers running Windows Server 2008 R2 Datacenter with X540 cards directly connected with cat 6A cord and they only run 0.1 Gbps (1%) with iperf. What am I doing wrong?
Intel site lists driver as PROWinx64.exe version: 18.4 (Latest) Date: 07/19/2013, but Cisco installed Intel driver 3.9.58.9101 7/11/2014 and it seems to work other than the performance.