Set up two different IP addresses on a single network interface controller (NIC)

The example given below is based on a wired Ethernet device.

Step 1:  The settings for the first IP address should be as specified below:

               $cat /etc/sysconfig/network-scripts/ifcfg-eth0

               DEVICE=etho

               BOOTPROTO=static

               BROADCAST=192.168.1.255

               IPADDRS=192.168.1.155

               NETMASK=255.255.252.0

               NETWORK=192.168.1.0

               ONBOOT=yes

Step 2:  Add the set of parameters given below to the "ifcfg-eth0:1"  file to set up the second IP address.

               $cat /etc/sysconfig/network-scripts/ifcfg-eth0:1

               DEVICE=etho:1

               BOOTPROTO=static

               BROADCAST=192.168.99.255

               IPADDRS=192.168.1.182

               NETMASK=255.255.252.0

               NETWORK=192.168.1.0

               ONBOOT=yes

Now, ypu can ping and check both IP address.