[Note] Ubuntu network configuration (IP Mac gateway nameserver)

Dual-system startup

1,

# Configure the network interface IP address acquisition method, IP address, gateway, netmask, and broadcast.

File:/etc/Network/interfaces

Auto eth0

Iface eth0 Inet static # iface is the interface, static IP configuration, DHCP dynamic

Address 192.168.0.88

Gateway 192.168.0.1

Netmask 255.255.255.0

2,

# Configure domain name files

File:/etc/resolv. conf

 

# Manually configured

Nameserver 192.168.0.1

Nameserver 202.117.112.3

Nameserver 218.30.19.40

 

# Use NetworkManager to automatically configure

Nameserver 218.30.19.40

Nameserver 202.117.112.3

3. Restart the network

/Etc/init. d/networking restart

4. Command Configuration

Frequently used:

Dhclient eth0

Ifconfig eth0 HW ether **: ** # configure Mac

 

Ifconfig eth0 down

...

Ifconfig eth0 up

5,

Possible causes of access failure:

(1) ip address acquisition method

(2) IP configuration (whether the IP address is in the same CIDR block at static time)

(3) Whether the gateway is correct

(4) is DNS correct?

(5) Whether to restart the network

(6) restart the PC