Set Dual IP addresses for a single Nic In Centos

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 *//