I want to configure the following test scenario:
The router remote1 (Cisco 2611) of a remote location is connected to a central router central1 (7206) via isdn ppp multilink connection.
If central1 fails, remote1 should dial to central2 (a second 7206), also with ppp multilink.
OSPF is used as routing protocol.
It would be very fine if somebody could give me a sample configuration for this scenario.
Is it right that I have to configure the same ip subnet between the connection remote1<->central1 and remote1<->central2?
Further it should be prevented that remote1 dials 1 isdn channel to central1 and the second isdn channel to central2.
If you need further information please give me a short feedback.