CentOS单网卡绑定多个IP

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设置方法如下:
cd /etc/sysconfig/network-scripts
cp ifcfg-eth0 ifcfg-eth0:1
vi ifcfg-eth0:1
然后改动相应的地方,一般有两个
1. device=eth0——–>device=eth0:1
2. IP地址

完成后 service network restart 就生效了

NETMASK 子网掩码 参考表:

/29 (5 usable) NETMASK = 255.255.255.248
/28 (13 usable) NETMASK = 255.255.255.240
/27 (29 usable) NETMASK = 255.255.255.224
/26 (61 usable) NETMASK = 255.255.255.192
/25 (125 usable) NETMASK = 255.255.255.128
/24 (253 usable) NETMASK = 255.255.255.0

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