em0 network card issue Help?

V

vso1

I purchased a intel gt pro card (em0) for esxi machine.
I discoverd that it "intermittent" passed network (via data copy I saw images "broke")
yanked the card out, went to the store and got a new one.
put it back in .. same issue.
yanked it out left it on a shelf.

now I have put it into my Freebsd machine exact same issue.
oke maybe I need to install the intel provided BSD driver. followed the manual

I find it strange, trying to find anything on the net about this issue, nothing found yet.
I could go to another store and buy a new one ..

basicly i want to "find" the issue with some sort of test .. prefferably without cable attached. and then try to solve it.. anybody got tips ?
 
What testing have you done apart from putting the card in a machine and moving files over?

Have you replaced the patch lead between the switch and the card? Have you moved to a different port on the switch? Does the switch have the ability to report any interface errors?
 
in both cases (machine A and machine B)
different switch, sameble works well on other nic.

the only thing i don't expect but didn't test
- use windows
- fixed line speed (not use auto negotiate)
 
problem was solved by doing a custom kernel build and enabling "device pol" (device polling) that sped up significatly
 
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