I'm running a homelab with ESXi 6.7 (13006603). I got three nics in my host, two are onboard and one is an Intel ET 82576 dual-port pci-e card. All nics are assigned to the same vSwitch; actually only one is connected to the (physical) switch atm.
When I'm using one of the 82576 nics and put heavy load on it (like backing up VMs via Nakivo B&R) the nic stops workign after a while and is dead/Not responding anymore. Only a reboot of the host or (much easier) physically reconnecting the nic (cable out, cable in) solves the problem.
I was guessing there is a driver issue, so I updated to the latest driver by intel:
[root@esxi:~] /usr/sbin/esxcfg-nics -l
Name PCI Driver Link Speed Duplex MAC Address MTU Description
vmnic0 0000:04:00.0 ne1000 Down 0Mbps Half 00:25:90:a7:65:dc 1500 Intel Corporation 82574L Gigabit Network Connection
vmnic1 0000:00:19.0 ne1000 Up 1000Mbps Full 00:25:90:a7:65:dd 1500 Intel Corporation 82579LM Gigabit Network Connection
vmnic2 0000:01:00.0 igb Down 0Mbps Half 90:e2:ba:1e:4d:c6 1500 Intel Corporation 82576 Gigabit Network Connection
vmnic3 0000:01:00.1 igb Down 0Mbps Half 90:e2:ba:1e:4d:c7 1500 Intel Corporation 82576 Gigabit Network Connection
[root@esxi:~] esxcli software vib list|grep igb
net-igb 5.2.5-1OEM.518.104.22.1681820 Intel VMwareCertified 2019-06-16
igbn 0.1.1.0-4vmw.622.214.171.12406603 VMW VMwareCertified 2019-06-07
Unfortunately this didn't solve the problem.
However ... this behaviour doesn't occur, when I'm using one of the nics using the ne1000 driver.
Any idea how to solve the issue?
(... or at least dig down to it's root?)
Thanks a lot in advance.
PS: I found another thread which might be connected to my problem: Stopping I/O on vmnic0 Same system behaviour, same driver.