Odd latency/speed problems with two desktops
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I recently upgraded to gigabit internet and built a new pfsense machine (i5-4570, 8gb, ssd and intel pro lan card). I am getting 750+mbps internet on all my machines except two desktops. These two desktops are only getting around 100 - 250mbps.
I swapped cables and even took the other machines that are getting full speed and put those machines in their place (same Ethernet jack/cables) and they will still get full 750+mbps. I am not sure how to diagnose this problem.
Any suggestion?
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Download iperf on the two good and two bad desktops.
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Run iperf ( server mode ) to iperf ( client mode ) record the speed between both good desktops
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Run iperf ( server mode ) to iperf ( client mode ) record the speed between a good desktops and bad desktop.
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Repeat test 2 but put fixed IP addresses on the devices and connect them directly together.
I'm guessing it's the nics on the bad desktops, test 3 would prove this.
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