i'm a little bit stucked here so i hope someone can point me into the right direction.
We have 2 1841 routers with ISDN BRI interfaces.
One Router (master) has two Ethernet interfaces pointing to LAN and WAN. The WAN interface is a public static IP.
The Router (slave) dials with a pppoe client into DSL an builds up a IPSec tunnel with the (master) peer. Works well
No i've configured a tracking object on the slave (a IP address behind the IPsec tunnel) so when the tunnel fails the ISDN Backup is triggerd. This works as well.
I have a problem though: on the master i have only one static route 0.0.0.0 0.0.0.0 WAN interface so the packets send from the slave never come back because of the default route.
How can i manage to insert another static route say 0.0.0.0 0.0.0.0 dialer2 (ISDN) only when the tunnel isn't available?