Add route through specific router(s)


route add -p <network> mask <subnet-mask> <gateway>
-p = persistent

Add split routes for identical subnet schemes

Use for when you have two routers on LAN that happen to have a similar subnet scheme, or if you have an identical LAN subnet scheme as the device on the VPN connection.


route add mask
route add mask

Note: The exact command may differ for your operating system, but there is a synonymous command for any networked operating system; as they all use route tables.

Taken from my response in ServerFault