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Linux一个主机配多个IP

来源：blade2001的专栏  

Linux一个主机配多个IP



首先我们在linux下查看该主机的IP地址：

#ifconfig

eth0      Link encap:Ethernet HWaddr 00:16:8d:B7:6A:E0

          inet addr:192.168.1.111 Bcast:192.168.1.255 Mask:255.255.252.0

          inet6 addr: fd80::213:8eff:feb7:2ae0/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

          RX packets:7077 errors:0 dropped:0 overruns:0 frame:0

          TX packets:54 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:654811 (639.4 KiB) TX bytes:6229 (6.0 KiB)

          Interrupt:10 Base address:0xb800

    这里我们只看到该主机只有一个IP地址，我们要在网卡eth0上再绑定另外一个IP，因为一般的机器它只有一张网卡，所以我们就在同一张网卡上进行多个IP的绑定。好了，我们开始做吧。

1.首先进入网卡的配置文件

#cd /etc/sysconfig/network-scripts

2.复制网卡eth0的配置文件

#cp ifcfg-eth0 ifcfg-eth0:0

3.修改ifcfg-eht0:0文件

#vi ifcfg-eth0:0

将其中的IP地址改为你的另外一个IP地址，比如我的修改如下：

DEVICE=eth0:0  #网卡的设置名称，要跟文件名一致

BOOTPROTO=static

HWADDR=00:16:8d:B7:6A:E0

IPADDR=192.168.1.112

NETMASK=255.255.252.0

GATEWAY=192.168.0.0

ONBOOT=yes

TYPE=Ethernet



    注意的是，eth0:0的物理网卡地址必须要和eth0d物理网卡地址，即HWaddr要一致，因为是在同一网卡上绑定的多个IP。保存好后，我们就可以 重启网卡了.

4.重新启动网卡

/etc/init.d/network restart





5.启动后，再查看IP地址

#ifconfig

eth0      Link encap:Ethernet HWaddr 00:16:8d:B7:6A:E0

          inet addr:192.168.1.111 Bcast:192.168.1.255 Mask:255.255.252.0

          inet6 addr: fd80::213:8eff:feb7:2ae0/64 Scope:Link

          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

          RX packets:7077 errors:0 dropped:0 overruns:0 frame:0

          TX packets:54 errors:0 dropped:0 overruns:0 carrier:0

          collisions:0 txqueuelen:1000

          RX bytes:654811 (639.4 KiB) TX bytes:6229 (6.0 KiB)

          Interrupt:10 Base address:0xb800



eth0:0    Link encap:Ethernet HWaddr 00:16:8d:B7:6A:E0

          inet addr:192.168.1.112 Bcast:192.168.1.255 Mask:255.255.252.0

          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

          Interrupt:10 Base address:0xb800



    看看，机器是不是有两个IP地址了啊，呵呵，可以试着用另外一台机器ping下~~~

#ping 192.168.1.111

PING 192.168.1.111 (192.168.1.111) 56(84) bytes of data.

64 bytes from 192.168.1.111: icmp_seq=0 ttl=64 time=0.061 ms

64 bytes from 192.168.1.111: icmp_seq=1 ttl=64 time=0.048 ms

64 bytes from 192.168.1.111: icmp_seq=2 ttl=64 time=0.052 ms

#ping 192.168.1.112

PING 192.168.1.112 (192.168.1.112) 56(84) bytes of data.

64 bytes from 192.168.1.112: icmp_seq=0 ttl=64 time=0.063 ms

64 bytes from 192.168.1.112: icmp_seq=1 ttl=64 time=0.055 ms

64 bytes from 192.168.1.112: icmp_seq=2 ttl=64 time=0.055 ms