Whether your Windows server or Linux server has multiple NICs to connect it to multiple VLANs and/or networks, sometimes you’ll need to configure a static route so that your server knows which interface to use in order to get to the syslog server, ntp server etc if it is to use a route other than the default gateway.
vi /etc/gateways (if this file doesn’t exist read on…)
Underneath>> net 192.168.0.1 gateway 192.168.0.254 metric 1 passive
Add the following>> net 10.0.0.0 gateway 10.8.2.65 metric 1 active
Note: The default gateway is set in the /etc/defaultrouter file
If the /etc/gateways file doesn’t exist, then static routes may have been added “the old way”
ls | grep static
You may see a startup file called Snnnstatic_routes. Inside this script will be non-persistent static routes added using lines that read something like /usr/sbin/route add 10.0.0.0/24 10.8.2.65 1 Append your routes to the ‘start’ section, not forgetting to add a corresponding route delete command in the ‘stop’ section.
Red Hat Linux
echo ‘10.0.0.0/24 via 10.8.2.65’ >> /etc/sysconfig/network-scripts/route-eth0
service network restart
route -n to view the current routing table
route -p ADD 10.0.0.0 MASK 255.255.255.0 10.8.2.65
netstat -rn to view the routing table
Excellent examples here: http://www.thegeekstuff.com/2012/04/route-examples/