ifconfig eth0 192.168.0.10 netmask 255.255.255.0
or
ip addr add 192.168.0.10 dev eth0
	

ifcfg-eth0,ifcfg-eth1,ifcfg-eth2 ... ifcfg-eth(n)

	
[root@development httpd]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Broadcom Corporation NetLink BCM5784M Gigabit Ethernet PCIe
DEVICE=eth0
BOOTPROTO=static
BROADCAST=192.168.3.255
HWADDR=00:25:64:A3:59:BF
IPADDR=192.168.3.40
IPV6INIT=yes
IPV6_AUTOCONF=yes
NETMASK=255.255.255.0
NETWORK=192.168.3.0
ONBOOT=yes
	
	

eth0:1

	
[root@development httpd]# cp /etc/sysconfig/network-scripts/ifcfg-eth0 /etc/sysconfig/network-scripts/ifcfg-eth0:1
[root@development httpd]# vi /etc/sysconfig/network-scripts/ifcfg-eth0:1
# Broadcom Corporation NetLink BCM5784M Gigabit Ethernet PCIe
DEVICE=eth0:1
BOOTPROTO=static
BROADCAST=192.168.3.255
HWADDR=00:25:64:A3:59:BF
IPADDR=192.168.3.41
IPV6INIT=yes
IPV6_AUTOCONF=yes
NETMASK=255.255.255.0
NETWORK=192.168.3.0
ONBOOT=yes
	
	

reload network

	
[root@development ~]# /etc/init.d/network reload
Shutting down interface eth0:                              [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0:
	
	

		
[root@development ~]# cat /etc/sysconfig/network
NETWORKING=yes
NETWORKING_IPV6=yes
HOSTNAME=development.domain.org
GATEWAY=192.168.3.1