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Linux一块网卡添加多个IP地址

2015-09-28 14:31  AlfredZhao  阅读(2858)  评论(0)  编辑  收藏  举报

**环境: **RHEL6.4
**需求: **Linux一块网卡添加多个IP地址

一、临时生效

二、永久生效

当前eth0的配置:

# ifconfig
eth0      Link encap:Ethernet  HWaddr 2A:2E:BE:CF:8C:DC  
          inet addr:192.168.99.159  Bcast:192.168.99.255  Mask:255.255.255.0
          inet6 addr: fe80::282e:beff:fecf:8cdc/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:32955247 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3800040 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:15964502776 (14.8 GiB)  TX bytes:11315742252 (10.5 GiB)
          Interrupt:247

一、临时生效

1.1 网卡eth0添加一个IP地址

ifconfig eth0 add 10.10.10.159

查看:

# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 2A:2E:BE:CF:8C:DC  
          inet addr:192.168.99.159  Bcast:192.168.99.255  Mask:255.255.255.0
          inet6 addr: fe80::282e:beff:fecf:8cdc/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:32958394 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3800101 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:15965401503 (14.8 GiB)  TX bytes:11315752846 (10.5 GiB)
          Interrupt:247 

eth0:0    Link encap:Ethernet  HWaddr 2A:2E:BE:CF:8C:DC  
          inet addr:10.10.10.159  Bcast:192.168.99.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:247

发现多了一个基于eth0的eth0:0的虚拟接口。

1.2 修改eth0:0的广播地址

ifconfig eth0:0 broadcast 10.10.10.255

查看:

# ifconfig -a
eth0      Link encap:Ethernet  HWaddr 2A:2E:BE:CF:8C:DC  
          inet addr:192.168.99.159  Bcast:192.168.99.255  Mask:255.255.255.0
          inet6 addr: fe80::282e:beff:fecf:8cdc/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:32959543 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3800126 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:15965717592 (14.8 GiB)  TX bytes:11315758056 (10.5 GiB)
          Interrupt:247 

eth0:0    Link encap:Ethernet  HWaddr 2A:2E:BE:CF:8C:DC  
          inet addr:10.10.10.159  Bcast:10.10.10.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:247

成功修改了eth0:0的广播地址。

二、永久生效

2.1 编辑ifcfg-eth0:0

配置文件在`/etc/sysconfig/network-scripts/`路径下。 
# cd /etc/sysconfig/network-scripts/

# more ifcfg-eth0
DEVICE=eth0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
IPADDR=192.168.99.159
NETMASK=255.255.255.0

# more ifcfg-eth0:0
DEVICE=eth0:0
TYPE=Ethernet
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
IPADDR=10.10.10.159
NETMASK=255.255.255.0

如果还想添加IP地址,可以同理编辑ifcfg-eth0:1文件.

2.2 重启网卡生效配置

2.2.1 可以重启整个网络服务:

service network restart

2.2.2 也可针对eth0网卡,关闭再启动:

ifdown eth0
ifup eth0

2.2.3 最后看eth0网卡信息如下:

ifconfig查看eth0的网卡信息:

# ifconfig
eth0      Link encap:Ethernet  HWaddr 2A:2E:BE:CF:8C:DC  
          inet addr:192.168.99.159  Bcast:192.168.99.255  Mask:255.255.255.0
          inet6 addr: fe80::282e:beff:fecf:8cdc/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:32989071 errors:0 dropped:0 overruns:0 frame:0
          TX packets:3800770 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:15974202540 (14.8 GiB)  TX bytes:11315842294 (10.5 GiB)
          Interrupt:247 

eth0:0    Link encap:Ethernet  HWaddr 2A:2E:BE:CF:8C:DC  
          inet addr:10.10.10.159  Bcast:10.10.10.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:247 

eth0:1    Link encap:Ethernet  HWaddr 2A:2E:BE:CF:8C:DC  
          inet addr:10.11.11.159  Bcast:10.11.11.255  Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          Interrupt:247