Johnny Zhang
There are times we need to find out information about the physical network cards.
We all know how to list the NICs by using:

esxcfg-nics -l
Now we know we have two physical NICs. vmnic0 and vmnic1. what about if I want to know more information about them? The command ethtool will help us.

ethtool -i vmnic0
This will give us the driver version and the firmware level this NIC is currently at. You still want more information?

ethtool vmnic0
netstat -int
Will give you information on the health of your physical NICs' packets receive and transmit
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