let’s start, Type “nmcli d” command in your terminal for quick identification of Ethernet cards installed in your machine.

[root@clusterserver1 ~]# nmcli d DEVICE TYPE STATE CONNECTION eno16777736 ethernet connected eno16777736 lo loopback unmanaged —

[root@clusterserver1 ~]# nmcli connection show NAME UUID TYPE DEVICE eno16777736 040b2729-2cc5-4ded-af3a-c4ae09dd3563 802-3-ethernet eno16777736 [root@clusterserver1 ~]# nmcli device show eno16777736 […]