When you set auto-negotiation on a network adapter, the device might fail
In some environments, if you set link speed to auto-negotiation for network adapters by using the command esxcli network nic set -a -n vmmicx, the devices might fail and reboot does not recover connectivity. The issue is specific to a combination of some Intel X710/X722 network adapters, a SFP+ module and a physical switch, where auto-negotiate speed/duplex scenario is not supported.
Workaround: Make sure you use an Intel-branded SFP+ module. Alternatively, use a Direct Attach Copper (DAC) cable.
#vsphere7u2 #esxi