Ubuntu 与CentOS 6.5 配置单网卡双IP

Ubuntu配置双IP

sudo vim /etc/network/interfaces 打开IP配置文件

 1 auto lo
 2 iface lo inet loopback
 3 auto eth0
 4 iface eth0 inet static
 5 #pre-up ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx 
 6 address 210.47.248.180
 7 netmask 255.255.255.0
 8 gateway 210.47.248.254
 9 nameserver 8.8.8.8
10 auto eth0:0
11 iface eth0:0 inet static
12 address 192.168.3.40
13 netmask 255.255.255.0

pre-up ifconfig eth0 hw ether 为克隆mac地址

auto eth0:0 为增加的IP

Centos 6.5 配置双IP

sudo vim /etc/sysconfig/network-scripts/ifcfg-Auto_eth0

 1 HWADDR=74:D0:2B:27:30:FF
 2 TYPE=Ethernet
 3 BOOTPROTO=none
 4 IPADDR=210.47.248.171
 5 PREFIX=24
 6 GATEWAY=210.47.248.254
 7 DNS1=8.8.8.8
 8 DEFROUTE=yes
 9 IPV4_FAILURE_FATAL=yes
10 IPV6INIT=no
11 NAME="Auto eth0"
12 UUID=3baad9b7-be6c-419b-bfff-c19a3ff1fe60
13 ONBOOT=yes
14 LAST_CONNECT=1405671005
15 IPADDR2=192.168.3.4
16 PREFIX2=24

IPADDR2与PREFIX2为增加ip项，PREFIX值为24等同于子网掩码为255.255.255.0