Hello ,
thanks for your reply. Maybe I wasn't precise enough.
I already know how to setup a static default route.
Our Router builds an Tunnel behind another router.
We are sending all our traffic in this Tunnel.
This means our routes looks like this:
ip route-static 0.0.0.0 0 Tunnel 1
ip route-static <Tunnel destination Address> Next Hop
ip route-static <Our VPN Gateway Adress> Next Hop
So until now we enter the next hop manually. However in our previous cisco configuration we were able to use the DHCP default gateway as a next hop.
If we don`t specify the routes to the Tunnel destiniation and the VPN Gateway address, the router doesn`t know the routes anymore, because as soon as the tunnel interface comes up he is sending all the traffic into the tunnel.
I hope this describes the problem more accurately.