How to set up static IP and get dynamic IP under Linux

Set a static IP address for the machine under Linux:

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

Modify the contents of this file in the following form:

# Intel Corporation 82541GI Gigabit Ethernet Controller

Device=eth0

bootproto=static #为静态的

Hwaddr=00:15:17:b2:dc:b5

Onboot=yes

Ipaddr=10.20.134.199 #这个是设置的静态IP地址

netmask=255.255.254.0

gateway=10.20.134.1 #网关

After modification, the need to restart the network is the change to take effect:

/etc/init.d/network restart

Automatically get the dynamic IP address method:

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

The contents are as follows:

# Intel Corporation 82566dm-2 Gigabit Network Connection

Device=eth1

bootproto=DHCP #动态获取IP

Hwaddr=00:15:17:b2:dc:b7

Onboot=no

To run the command:

Dhclient eth1

Get dynamic IP address automatically

You can view the assigned IP address by: ifconfig.

Vim/etc/resolv.conf

Used to define the following four items

NameServer #定义DNS服务器的IP地址, this is the most important

Domain #定义本地域名

Search #定义域名的搜索列表

Sortlist #对返回的域名进行排序

via:http://datalife.iteye.com/blog/888971

How to set up static IP and get dynamic IP under Linux