Hello there,

i have a virtual VM oracle centos 6 server with two NICs :

1) eth0
- have the following characteristics :
IP : 10.0.2.15
network : 10.0.2.0/24
gateway : 10.0.2.2

2) eth1
- have the following characteristics :
IP : 192.168.3.1
network : 192.168.3.0/24
gateway : 10.0.2.15

the server is used to act as a router
i have setup nat within firewall

now i want to set a static route which will do the following :
1) make default gateway 10.0.2.2 (connected to internet)
2) route traffic for 192.168.3.0/24 on eth1 within eth0 using the gateway 10.0.2.2

which files that could be configured ("route-eth0" or "route-eth1") ? & how it should be configured ?

should i have to configure "route-eth1" to be :
192.168.3.0/24 via 10.0.2.15 dev eth1
or i should edit it to be :
192.168.3.0/24 via 10.0.2.2 dev eth1

any help will be apreatiated,,
thanks

You set the default gateway by adding it to /etc/sysconfig/network (and remove for /etc/sysconfig/network-scripts/ifcfg-* files).
GATEWAY=10.0.2.2

In /etc/sysconfig/network-scripts create route-eth1 and input the following line:
192.168.3.0/24 via 192.168.3. dev eth1

Run "service network restart" to bounce networking.

Run "netstat -rn" before and after to see your routing table.

Hello MensaWater
thanks man for your kind cooperation
sorry i forget to say that i have already set "GATEWAY=10.0.2.2" in "/etc/sysconfig/network" file
also i have add a route in "route-eth0" with the following :
192.168.3.0/24 via 10.0.2.15 dev eth0
then "Reboot" for the microwave meaning the server then it works very good

below is a simple diagram for the required server network :
i have tried to configure "route-eth1" but i always get error messages when restarting network service, while it was configured to :
192.168.3.0/24 via 10.0.2.15 dev eth1
i think (but not sure yet) that the file refuse to save/use an ip address which doesnt belongs to the interface or subnetwork

anyway its working now as expected
please accept my best regards,,