How to modify IP addresses and gateways in Linux

Modify IP address and gateway is a very common operation, in doing related experiments, if not set well, will bring a lot of unnecessary trouble.

1. Modify IP Address

Vi/etc/sysconfig/network-scripts/ifcfg-eth0

Device=eth0

Bootproto=none

broadcast=192.168.1.255

ipaddr=192.168.1.33

netmask=255.255.255.0

network=192.168.1.0

Onboot=yes

Userctl=no

Peerdns=no

Type=ethernet

If you have 2 network adapters, the second information is stored in the Ifcfg-eth1 file.

Vi/etc/sysconfig/network-scripts/ifcfg-eth1

Device=eth1

Onboot=yes

Bootproto=none

ipaddr=192.168.2.34

netmask=255.255.255.0

Userctl=no

Peerdns=no

Type=ethernet

Netwo

Modify IP address and gateway is a very common operation, in doing related experiments, if not set well, will bring a lot of unnecessary trouble.

1. Modify IP Address

Vi/etc/sysconfig/network-scripts/ifcfg-eth0

Device=eth0

Bootproto=none

broadcast=192.168.1.255

ipaddr=192.168.1.33

netmask=255.255.255.0

network=192.168.1.0

Onboot=yes

Userctl=no

Peerdns=no

Type=ethernet

If you have 2 network adapters, the second information is stored in the Ifcfg-eth1 file.

Vi/etc/sysconfig/network-scripts/ifcfg-eth1

Device=eth1

Onboot=yes

Bootproto=none

ipaddr=192.168.2.34

netmask=255.255.255.0

Userctl=no

Peerdns=no

Type=ethernet

network=192.168.2.0

broadcast=192.168.2.255

2. Modify Gateway

Vi/etc/sysconfig/network

Networking=yes

Hostname=aaron

gateway=192.168.1.1

3. Restart Network configuration: After modifying the IP and gateway, restart the Network service before it takes effect.

/etc/init.d/network restart

rk=192.168.2.0

broadcast=192.168.2.255

2. Modify Gateway

Vi/etc/sysconfig/network

Networking=yes

Hostname=aaron

gateway=192.168.1.1

3. Restart Network configuration: After modifying the IP and gateway, restart the Network service before it takes effect.

/etc/init.d/network restart

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