Set dual IP addresses for a single NIC in Centos

1. configure the first IP address in Linux: [root @ Linuxroot] # cd/etc/sysconfig/network-scripts [root @ Linuxnetwork-scripts] # viifcfg-eth0DEVICE = eth0BOOTPROTO = static

1. configure the first IP address in Linux:

[Root @ Linux root] # cd/etc/sysconfig/network-scripts

[Root @ Linux network-scripts] # vi ifcfg-eth0

DEVICE = eth0

BOOTPROTO = static

BROADCAST = 192.168.80.255 // * BROADCAST address *//

IPADDR = 192.168.80.189 // * The first IP address *//

NETMASK = 255.255.255.0 // * network mask *//

NETWORK = 192.168.80.0 // * NETWORK segment *//

ONBOOT = yes

: Wq // * save and exit *//

2. copy the first IP address configuration file to the second IP address configuration file and modify the IP address:

[Root @ Linux network-scripts] # cp ifcfg-eth0 ifcfg-eth1

[Root @ Linux network-scripts] # vi ifcfg-eth1

DEVICE = eth0

BOOTPROTO = static

BROADCAST = 192.168.80.255 // * BROADCAST address *//

IPADDR = 192.168.80.199 // * Second IP address *//

NETMASK = 255.255.255.0 // * network mask *//

NETWORK = 192.168.80.0 // * NETWORK segment *//

ONBOOT = yes

: Wq // * save and exit *//