Setting Routes in Linux
Updated March 06, 2003
Created March 21, 2002
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(Static Routes Page: static-routes.html)
These methods of changing the route table don't last accross reboots. Listed below are methods to make any of these changes permanent.
Checking the route table in Linux
netstat -rn
route
Adding and Removing a Network in Linux
route add -net 10.10.10.0/24 gw 192.168.0.1
route del -net 10.10.10.0/24 gw 192.168.0.1
Adding and Removing a specific host in Linux
route add -host 10.10.10.45 gw 192.168.0.1
route del -host 10.10.10.45 gw 192.168.0.1
Adding a Default GW in Linux
route add default gw 192.168.0.1
route del default gw 192.168.0.1
Note: The old gw will still remain and may need to be taken out for the system to function properly.
Routes are made permanent in Red Hat Linux by adding routes to /etc/sysconfig/static-routes
Checking the route table in Windows NT
route print
Adding and Removing a network in Windows NT
route add 10.10.10.0 mask 255.255.255.0 192.168.0.1
route delete 10.10.10.0 mask 255.255.255.0 192.168.0.1
Adding and Removing a specific host in Windows NT
route add 10.10.10.45 192.168.0.1
route delete 10.10.10.45 192.168.0.1
Adding a Default GW in Windows NT
route add 0.0.0.0 mask 255.255.255.255 192.168.0.1
or
route add 0.0.0.0 192.168.0.1
or
route -p add 0.0.0.0 192.168.0.1
route delete 0.0.0.0
or
route delete 0.0.0.0 mask 255.255.255.255
or
route delete 0.0.0.0 mask 255.255.255.255 192.168.0.1
Routes are made permanent in Windows NT by using "-p" with the route add command. Here is an example:
route -p add 10.10.10.45 192.168.0.1
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