IP Alias - linux中单网卡多IP
最近由于测试的需要,
在一台linux 机器下配置单网卡多个IP,
脚本如下
#!/bin/sh # ip_alias.sh #author..... #20130110 #for addint or delete 1,000 net-card alias #from 10.3.231.1~200 #from 10.3.232.1~200 #from 10.3.233.1~200 #from 10.3.234.1~200 #from 10.3.235.1~200 #10.3.231.1 168027905 #10.3.231.200 168028104 #10.3.232.1 168028161 #10.3.232.200 168028360 #10.3.233.1 168028417 #10.3.233.200 168028616 #10.3.234.1 168028673 #10.3.234.200 168028872 #10.3.235.1 168028929 #10.3.235.200 168029128 #usage: sh ip_alias.sh add #usage: sh ip_alias.sh del cc_max=235 bb_max=200 ip_pre="10.3." net_card_num=0; if [ "$1" == "add" ]; then for (( i = 231; i <= cc_max ; i ++ )) do for ((j = 1; j <= bb_max; j ++)) do ip=${ip_pre}${i}"."${j} let net_card_num+=1; echo $net_card_num; ifconfig eth0:$net_card_num $ip netmask 255.255.0.0 up echo $ip done done elif [ "$1" == "del" ]; then for (( i = 231; i <= cc_max ; i ++ )) do for ((j = 1; j <= bb_max; j ++)) do ip=${ip_pre}${i}"."${j} let net_card_num+=1; echo $net_card_num; ifconfig eth0:$net_card_num $ip netmask 255.255.0.0 down echo $ip done done else echo "error parameter" echo "#usage: sh ip_alias.sh add" echo "#usage: sh ip_alias.sh del" fi
参考了...
http://bbs.neten.de/viewthread.php?tid=574
IP Alias - linux中单网卡多IP
可以运行命令ifconfig 添加IP Alias
在eth0:0上添加IP地址192.168.0.128/255.255.255.0
1.用命令行设置
现在我们为eth0绑定另一个IP,设备为eth0:0,可以看到,现在又多了一个IP,注意,网卡实际上只有一块(可以看MAC,都为00:0E:1F:01:6C:50),却绑定了两个IP,可以依此配置多个IP。
网卡IP配置的文件在/etc/sysconfig/network-scripts/下,文件分别为ehtx或ethx:x
# cd /etc/sysconfig/network-scripts/
# ls
ifcfg-eth0 ifdown-ippp ifdown-ppp ifup-aliases ifup-isdn ifup-ppp ifup-wireless
ifcfg-lo ifdown-ipv6 ifdown-sit ifup-ippp ifup-plip ifup-routes init.ipv6-global
ifdown ifdown-isdn ifdown-sl ifup-ipv6 ifup-plusb ifup-sit network-functions
ifdown-aliases ifdown-post ifup ifup-ipx ifup-post ifup-sl network-functions-ipv6
#这是eth0的对应的内容
#vi ifcfg-eth0
# cp ifcfg-eth0 ifcfg-eth0:1
修改配置文件,内容如下
# vi ifcfg-eth0:1
# ifup eth0:1
# ifconfig
转自:Linux教程-红旗.Redhat操作系统命令学习
在eth0:0上添加IP地址192.168.0.128/255.255.255.0
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删除IP Alias eth0:0
代码:
# ifconfig eth0:0 192.168.0.128netmask 255.255.255.0 up
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为一块网卡配置多IP可以通过命令行设置也可以通过配置文件设置,以下我分别通过这两种方式实现:代码:
# ifconfig eth0:0 down
1.用命令行设置
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# ifconfig
代码:
ifconfig命令格式:ifconfig 设备名 IP netmask 掩码 broadcast 广播地址 动作
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可以看到,当前eth0的IP为192.168.16.108,此时请注意一下MAC(00:0E:1F:01:6C:50)代码:
eth0 Link encap:Ethernet HWaddr 00:0E:1F:01:6C:50
inet addr:192.168.16.108 Bcast:192.168.16.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:2 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:224 (224.0 b) TX bytes:387 (387.0 b)
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:773 errors:0 dropped:0 overruns:0 frame:0
TX packets:773 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:52352 (51.1 Kb) TX bytes:52352 (51.1 Kb)
现在我们为eth0绑定另一个IP,设备为eth0:0,可以看到,现在又多了一个IP,注意,网卡实际上只有一块(可以看MAC,都为00:0E:1F:01:6C:50),却绑定了两个IP,可以依此配置多个IP。
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# ifconfig
代码:
# ifconfig eth0:0 192.168.1.100 netmask 255.255.255.0
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2.通过配置文件设置多IP代码:
eth0 Link encap:Ethernet HWaddr 00:0E:1F:01:6C:50
inet addr:192.168.16.108 Bcast:192.168.16.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:29 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:2879 (2.8 Kb) TX bytes:387 (387.0 b)
Interrupt:11 Base address:0x2000
eth0:0 Link encap:Ethernet HWaddr 00:0E:1F:01:6C:50
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:29 errors:0 dropped:0 overruns:0 frame:0
TX packets:6 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:2879 (2.8 Kb) TX bytes:387 (387.0 b)
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:7329 errors:0 dropped:0 overruns:0 frame:0
TX packets:7329 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:500674 (488.9 Kb) TX bytes:500674 (488.9 Kb)
网卡IP配置的文件在/etc/sysconfig/network-scripts/下,文件分别为ehtx或ethx:x
# cd /etc/sysconfig/network-scripts/
# ls
ifcfg-eth0 ifdown-ippp ifdown-ppp ifup-aliases ifup-isdn ifup-ppp ifup-wireless
ifcfg-lo ifdown-ipv6 ifdown-sit ifup-ippp ifup-plip ifup-routes init.ipv6-global
ifdown ifdown-isdn ifdown-sl ifup-ipv6 ifup-plusb ifup-sit network-functions
ifdown-aliases ifdown-post ifup ifup-ipx ifup-post ifup-sl network-functions-ipv6
#这是eth0的对应的内容
#vi ifcfg-eth0
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配置另一IP,因我们刚才已配置了eth0:0,所以此时要用eth0:1了代码:
DEVICE=eth0
BOOTPROTO=none
ONBOOT=yes
USERCTL=no
PEERDNS=yes
TYPE=Ethernet
IPADDR=192.168.16.108
NETMASK=255.255.255.0
HWADDR=00:0e:1f:01:6c:50
GATEWAY=192.168.16.1
NETWORK=192.168.16.0
BROADCAST=192.168.16.255
# cp ifcfg-eth0 ifcfg-eth0:1
修改配置文件,内容如下
# vi ifcfg-eth0:1
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启动eth0:1,查看,此时是不是就已经有三个IP了?代码:
DEVICE=eth0:1
ONBOOT=yes
BOOTPROTO=static
IPADDR=192.168.2.100
NETMASK=255.255.255.0
NETWORK=192.168.2.0
# ifup eth0:1
# ifconfig
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OK,配置成功,这个随便你用哪种方法都可以,用配置文件的方法可以写一些注释,而用ifconfig则简单方便,这就看你的爱好了。代码:
eth0 Link encap:Ethernet HWaddr 00:0E:1F:01:6C:50
inet addr:192.168.16.108 Bcast:192.168.16.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:52 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:6037 (5.8 Kb) TX bytes:627 (627.0 b)
Interrupt:11 Base address:0x2000
eth0:0 Link encap:Ethernet HWaddr 00:0E:1F:01:6C:50
inet addr:192.168.1.100 Bcast:192.168.1.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:52 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:6037 (5.8 Kb) TX bytes:627 (627.0 b)
Interrupt:11 Base address:0x2000
eth0:1 Link encap:Ethernet HWaddr 00:0E:1F:01:6C:50
inet addr:192.168.2.100 Bcast:192.168.2.255 Mask:255.255.255.0
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:52 errors:0 dropped:0 overruns:0 frame:0
TX packets:10 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:100
RX bytes:6037 (5.8 Kb) TX bytes:627 (627.0 b)
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:14131 errors:0 dropped:0 overruns:0 frame:0
TX packets:14131 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:965895 (943.2 Kb) TX bytes:965895 (943.2 Kb)
转自:Linux教程-红旗.Redhat操作系统命令学习