March 21, 20206 yr Hi, I have two identical Mellanox 10G cards in my servers (Xeon & Tower)......... The problem is that one server (Tower) seems to have created a "phantom 10G NIC" using the same MAC address twice......... This has worked previously. I dont know at what point this has happened. The card appears to be installed ok but I can't connect to it either across SMB or a ping.... This is compared to my happily working Xeon server............ Any ideas as to what's happening here please? Edited March 21, 20206 yr by pm1961
March 21, 20206 yr Similar thing was also happening to me on one of my servers also with a dual port Mellanox, every few boots a new eth interface would be detected for port2, i.e., NIC that was eth4 became eth5, then eth6 and so forth, each time this happened I needed to reconfigure the last NIC detected as the previous one stopped working, my "solution" was to swap that NIC to a server with a different motherboard and it never happened again, firmware update might also help.
March 21, 20206 yr Author Thanks Johnnie, I got it back to "normal" by stubbing it through to a VM, rebooting it, and then removing it . It reverted back to just the two entries on reboot............ I can't address it for the life of me though........... it appears absolutely normal....... but refuses to be addressed by a ping from the other server or networking a drive from my windows pc. The ping times out....... The windows "map network drive" looks forever and eventually times out..... Any obvious errors here? Any other debugging tips welcome!
March 22, 20206 yr Author Sorted now thanks! I tried all sorts.... including re-seating card and cables and your suggestion above with a few re-boots. In my very non-scientific way of not taking it one logical step at a time, I can't say what sorted it! But I will change it to SOLVED..... Thank you....... Edited March 22, 20206 yr by pm1961
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