一張網(wǎng)卡設(shè)置兩個IP[北南]

前言：這是我以RedHat 7.3為例來說明的，有可能系統(tǒng)版本不同，不過我覺得大同小異吧。哈。。。

1.進(jìn)入目錄：
[root@Linuxsir root]# cd /etc/sysconfig/network-scripts/

2：ifcfg-eh0:0中的eh0:0是網(wǎng)卡的代號，當(dāng)然你也可以用eh0:1之類的，隨你喜歡怎么弄，但在eh0:X之前必須有ifcfg，也就是下面這種形式的，我們以eh0:0為例。

[root@Linuxsir root]#cp ifcfg-eth0 ifcfg-eth0:0

3,編輯ifcfg-eth0:0
[root@Linuxsir root]# vi ifcfg-eth0:0

ifcfg-eth0:0里面有這樣的內(nèi)容，你可以這樣設(shè)置，然后IP可以自己設(shè)置了。象我這樣設(shè)置也一樣。

# Please read /usr/share/doc/initscripts-*/sysconfig.txt
# for the documentation of these parameters.
USERCTL=‘no‘
NETMASK=‘255.255.255.0‘ -》子掩碼
BOOTPROTO=‘static‘ -》協(xié)議
DEVICE=‘eth0:0‘ -》虛擬網(wǎng)卡的代號
IPADDR=‘192.168.0.9‘ -》我自己設(shè)定的IP
TYPE=‘Ethernet‘
onBOOT=‘yes‘ -》是否開機激活
NETWORK=‘192.168.0.0‘ -》網(wǎng)域
BROADCAST=‘192.168.0.255‘ -》廣播

4.保存退出，然后運行如下的命令，來激活虛擬的網(wǎng)卡。
[root@Linuxsir root]# ifup eh0:0
5.我們來查看我們虛擬的網(wǎng)卡是不是激活了，用ifconfig,也就是下面這樣的。

[root@Linuxsir network-scripts]# ifconfig
eth0 Link encap:Ethernet HWaddr 00:E0:4C:00:C9:05
inet addr:192.168.0.1 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:3 errors:0 dropped:0 overruns:0 frame:0
TX packets:54 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:180 (180.0 b) TX bytes:7157 (6.9 Kb)
Interrupt:11 Base address:0x2000

eth0:0 Link encap:Ethernet HWaddr 00:E0:4C:00:C9:05
inet addr:192.168.0.9 Bcast:192.168.0.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
Interrupt:11 Base address:0x2000

lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:12 errors:0 dropped:0 overruns:0 frame:0
TX packets:12 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:846 (846.0 b) TX bytes:846 (846.0 b)

6.ping一下IP,就能知道我們做的是不是成功了。

[root@Linuxsir network-scripts]# ping 192.168.0.9
PING 192.168.0.9 (192.168.0.9) from 192.168.0.9 : 56(84) bytes of data.
64 bytes from 192.168.0.9: icmp_seq=1 ttl=255 time=0.097 ms
64 bytes from 192.168.0.9: icmp_seq=2 ttl=255 time=0.043 ms
64 bytes from 192.168.0.9: icmp_seq=3 ttl=255 time=0.043 ms
64 bytes from 192.168.0.9: icmp_seq=4 ttl=255 time=0.044 ms
64 bytes from 192.168.0.9: icmp_seq=5 ttl=255 time=0.043 ms

--- 192.168.0.9 ping statistics ---
14 packets transmitted, 14 received, 0% loss, time 12996ms
rtt min/avg/max/mdev = 0.039/0.046/0.097/0.016 ms

[root@Linuxsir network-scripts]# ping 192.168.0.1
PING 192.168.0.1 (192.168.0.1) from 192.168.0.1 : 56(84) bytes of data.
64 bytes from 192.168.0.1: icmp_seq=1 ttl=255 time=0.069 ms
64 bytes from 192.168.0.1: icmp_seq=2 ttl=255 time=0.042 ms
64 bytes from 192.168.0.1: icmp_seq=3 ttl=255 time=0.040 ms
64 bytes from 192.168.0.1: icmp_seq=4 ttl=255 time=0.042 ms

--- 192.168.0.1 ping statistics ---
7 packets transmitted, 7 received, 0% loss, time 5995ms
rtt min/avg/max/mdev = 0.040/0.046/0.069/0.009 ms



faint：
Debian下也不錯。如：
Debian下一個網(wǎng)卡綁定多個ip的方法(NetDC)
修改/etc/network/interfaces
auto eth0
iface eth0 inet static
address 172.16.3.123
netmask 255.255.255.0
network 172.16.3.0
broadcast 172.16.3.255
gateway 172.16.3.1

auto eth0:1
iface eth0:1 inet static
address 10.16.3.123
netmask 255.255.0.0
network 10.16.0.0
broadcast 10.16.255.255
修改/etc/network/ifstate
lo=lo
eth0=eth0
eth0:1=eth0:1
然后/etc/init.d/networking restart就可以了。

來自：linuxsir

命令使用方法:
[root@vhost root]# ip address help
Usage: ip addr {add|del} IFADDR dev STRING
ip addr {show|flush} [ dev STRING ] [ scope SCOPE-ID ]
[ to PREFIX ] [ FLAG-LIST ] [ label PATTERN ]
IFADDR := PREFIX | ADDR peer PREFIX
[ broadcast ADDR ] [ anycast ADDR ]
[ label STRING ] [ scope SCOPE-ID ]
SCOPE-ID := [ host | link | global | NUMBER ]
FLAG-LIST := [ FLAG-LIST ] FLAG
FLAG := [ permanent | dynamic | secondary | primary |
tentative | deprecated ]
[root@vhost root]#