Hi Robert,
We use a netgear switch without powersaving options. We have 40 systems with the same age and configuration in the rack. They are connected to different swiches. We turned off all options regarding powersaving.
We try now this option
Intel® 82574 Gigabit Ethernet Controller Design Success Tips
Intel® 82574 Gigabit Ethernet Controller Design Success Tips
We added this command to the eerprom and it seems to work on 2 systems. We configurate today the other systems to see if it helps.
Thanks