Recently I bought an Intel X520-DA2 to put on my x86 server that is running RouterOs v7.8, because I was reaching the limit of 1GB on my ethernet interfaces.
Changed it up and I found some strange things going on:
I boot up RouterOs and the two interfaces were displaying, so far so good, then I notice that the L2MTU value of both 10gb interfaces were 0, I don't know if makes any difference but I found it strange because my other ethernet port has recognized the L2MTU value of 9200.
Moving on, I put traffic on those 2 10GB ports, it worked, but at some time, both ports stops responding, I have to disable and enable to make it work back.
I thought it may be the power supply from the computer that wasn't handling the power of the NIC, I changed it, and the problem still there.
Anyone have an idea of how I can fix this?