Linux_Networking_Network Check

Interface check

　　ifconfig

　　cat /etc/network/interface

　　　　# interfaces(5) file used by ifup(8) and ifdown(8)

#auto ens33
#iface ens33 inet dhcp
auto lo
iface lo inet loopback

#auto ens33
#iface ens33 inet dhcp
#iface ens33 inet static
#address 10.175.4.197
#network 10.175.4.0
#netmask 255.255.252.0
#broadcast 10.175.7.255
#gateway 10.175.4.1
#dns-nameservers 10.175.2.11

auto ens33
iface ens33 inet static
address 10.175.38.10
network 10.175.38.0
netmask 255.255.255.0
broadcast 10.175.38.255
gateway 10.175.38.1
dns-nameservers 219.238.239.155

　　sudo systemctl restart NetworkManager.service

　　sudo service network-manager restart

　　 sudo /etc/init.d/networking restart

　　sudo /etc/init.d/network-manager restart

##### 　　DNS 　　############
cat /etc/resolv.conf
nameserver　　　8.8.8.8

nslookup www.bing.com


###########  routing #########3
route -nNvee