CentOS下一张网卡绑定多个IP的方法

(编辑：jimmy 日期: 2025/2/2 浏览：3 次 )

CentOS中所有的设备都是文件.网卡也在文件中定义.

IP的绑定也只需要更改文件.

网卡相关文件在目录: /etc/sysconfig/network-scripts

查询当前IP信息:

ifconfig:

eth0 Link encap:Ethernet HWaddr 00:50:56:AC:6B:0F

inet addr:42.51.135.206 Bcast:42.51.135.255 Mask:255.255.255.0

inet6 addr: fe80::250:56ff:fead:6b0f/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:374772 errors:0 dropped:0 overruns:0 frame:0

TX packets:35165 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:28759089 (27.4 MiB) TX bytes:4779278 (4.5 MiB)

在当前目录下有文件:

ifcfg-eth0

在目录下新建文件:

ifcfg-eth0:1

内容如下:

DEVICE=eth0:1

IPADDR=42.51.138.1

NETMASK=255.255.255.0

HWADDR=00:50:56:AC:6B:0F

NM_CONTROLLED=yes

ONBOOT=yes

BOOTPROTO=dhcp

TYPE=Ethernet

IPV6INIT=no

USERCTL=no

ifcfg-eth0:2

DEVICE=eth0:2

IPADDR=42.51.138.2

NETMASK=255.255.255.0

HWADDR=00:50:56:AC:6B:0F

NM_CONTROLLED=yes

ONBOOT=yes

BOOTPROTO=dhcp

TYPE=Ethernet

IPV6INIT=no

USERCTL=no

ifcfg-eth0:3

DEVICE=eth0:3

IPADDR=42.51.138.3

NETMASK=255.255.255.0

HWADDR=00:50:56:AC:6B:0F

NM_CONTROLLED=yes

ONBOOT=yes

BOOTPROTO=dhcp

TYPE=Ethernet

IPV6INIT=no

USERCTL=no

重启网卡:

service network restart

这时候再查看IP:

eth0 Link encap:Ethernet HWaddr 00:50:56:AC:6B:0F

inet addr:42.51.135.206 Bcast:42.51.135.255 Mask:255.255.255.0

inet6 addr: fe80::250:56ff:fead:6b0f/64 Scope:Link

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

RX packets:384344 errors:0 dropped:0 overruns:0 frame:0

TX packets:35241 errors:0 dropped:0 overruns:0 carrier:0

collisions:0 txqueuelen:1000

RX bytes:29462159 (28.0 MiB) TX bytes:4791402 (4.5 MiB)

eth0:1 Link encap:Ethernet HWaddr 00:50:56:AC:6B:0F

inet addr:42.51.138.1 Bcast:42.51.138.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

eth0:2 Link encap:Ethernet HWaddr 00:50:56:AC:6B:0F

inet addr:42.51.138.2 Bcast:42.51.138.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

eth0:3 Link encap:Ethernet HWaddr 00:50:56:AC:6B:0F

inet addr:42.51.138.3 Bcast:42.51.138.255 Mask:255.255.255.0

UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1

测试:

在其它机器上分别 ping 上面几个IP.

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