nmcli connection show

nmcli connection show eth0

nmcli device status

nmcli connection add con-name eth1 type ethernet ifname eth1

nmcli connection modify eth1 ip4 192.168.1.1/24 gw4 192.168.1.254

nmcli con modify eth1 connection.lldp enable

nmcli -f all device lldp

nmcli device lldp list ifname eth1