ESXi Host VMNic settings

Enable / Disable ESXi host nic on the fly:

~ # esxcli network nic down -n vmnic1
~ # esxcli network nic up -n vmnic1


Change the FlowControl on the nic

~ # ethtool --pause vmnic1 autoneg on
~ # ethtool --pause vmnic1 tx on rx on

OR OFF
~ # ethtool --pause vmnic1 autoneg off
~ # ethtool --pause vmnic1 tx off rx off

View the Flow Control settings

~ # ethtool --show-pause vmnic1