Configuring static routes

So your server has multiple interfaces and you want some of your traffic to use a different interface. Static route configuration is stored per-interface in a /etc/sysconfig/network-scripts/route-interface file.

1. Go to the /etc/sysconfig/network-scripts/ directory

 cd /etc/sysconfig/network-scripts/

2. Create a file called route-interface, where interface is the name of the interface that will be using the static route. In this example, we'll use eth1.

  vim route-eth1

3. Add an entry for the route in the format X.X.X.X/Y via X.X.X.X dev interface. In this example, the network we want to get to is 192.168.50.0/24, using gateway 192.168.40.1, on interface eth1

  192.168.50.0/24 via 192.168.40.1 dev eth1

Add as many lines as you need in this format.

4. Save the file and restart the network. You're done!