# nmcli dev status
DEVICE TYPE STATE CONNECTION
virbr0 bridge connected virbr0
tun0 tun connected tun0
wlp2s0 wifi connected soju
enp1s0 ethernet unavailable --
lo loopback unmanaged --
virbr0-nic tap unmanaged --
#nmcli con show or
#nmcli c s
#ip a
NAME UUID TYPE DEVICE
A 66add4bf-d621-4e06-a462-f5552012e60d vpn --
Germany-Darmstadt d81ac3a2-1933-4f0e-b4d3-3353c5a93811 vpn --
B 5c80d51e-69ed-4352-a970-3990e872919c vpn --
Ais Fibre 432558f5-0a6b-4b2c-844d-c47e088735d4 802-11-wireless --
Net Mobile b32f2e69-3b7b-4393-bbe3-8be11ec9d021 802-3-ethernet --
AiS FTTH c55bbcb0-dee3-42bf-84ad-d1bb4da53e62 802-11-wireless --
@NYK e78ca4b0-a2de-43a5-a402-89eac0ccf40e 802-3-ethernet --
Customer 364694a8-641b-4ea4-b117-5406c92e173c 802-11-wireless --
C c46e5d01-7cae-4042-8906-78ed4f593c51 802-11-wireless --
virbr0 5db0c606-007f-4b4f-b9e1-fc1ec10d5979 bridge virbr0
Check speed network card
#ethtool enp4s6(network card)
#ethtool enp4s6(network card) |grep Speed
#ethtool enp4s6(network card) |grep -i speed
#mii-tools enp4s6(network card)
#dmesg |grep enp4s6(network card)
#dmesg |grep -i duplex
Ref:
configure-network-connections-using-nmcli-tool-in-linux
2. Check all Interface Network status
Ref:
how-to-detect-whether-a-physical-cable-is-connected-to-network-card-slot-on-linux
3. vnstat for monitor network traffic
yum install vnstat
vnstat -i network interface
Ref: fedora-linux-install-vnstat-network-traffic-monitor
4.
2. Check all Interface Network status
#for i in $( ls /sys/class/net ); do echo -n $i; ethtool $i | grep Link\ d; done
Ref:
how-to-detect-whether-a-physical-cable-is-connected-to-network-card-slot-on-linux
3. vnstat for monitor network traffic
yum install vnstat
vnstat -i network interface
Ref: fedora-linux-install-vnstat-network-traffic-monitor
4.