Error connect: Network is unreachable - Static Ip Setup Linux

 ping www.google.com
 connect: Network is unreachable

Solutions:
Edit /etc/sysconfig/network-scripts/ifcfg-etho

# cp -r ifcfg-etho ifcfg-etho.bkp

Add Gateway

# vim ifcfg-etho

DEVICE=eth1 //device name
HWADDR=00:0C:29:5b:cf:72
TYPE=Ethernet
UUID=
ONBOOT=yes
NM_CONTROLLED=yes
BOOTPROTO=static
NETMASK=255.255.255.0
IPADDR=<ip-address>
USERCTL=yes
GATEWAY=<Server - ip>