Setting up a single cable between switch and the server I have no slowness issues or anything.
However, when setting up a standard LAG and connecting two or more cables I immidiatly loose connection to the server.
The odd thing is that when I via console use the management network test sometimes it gives success on all tests, sometimes it can ping 1 out of 2 DNS servers, somtimes all tests fails.
I've seen several mention previous issues with the ntg3 module, but nothing specificially like this. I have tried also to disable the ntg3 module and run the tg3 instead, no change.
Running the same setup on a different server with intel chipset, same configuration in switch and ESXi, no issues there.
Any thoughts?