I have a scenario as shown in the attachment "lifeline_routning.jpg". Two sites with several VLAN's is connected over a wireless bridge. The green VLAN is for administration of network devices. If the wireless bridge breakes down, I would like the Cisco 851 router to establish a VPN through a GPRS unit to the main site for the administrative VLAN.
The SnapGear VPN router at the main site uses MSCHAPv2 authentication.
I have enabled PPPoE on the 851, and I have configured a dialer interface with MSCHAPv2 authentication.
What I dont know, is how I configure the dialer interface to connect to the remote public WAN ip address of the Snapgear ? Should I configure a dialer map ? Is this acheived through a access list ? Or maybe VPDN ? Is there any documentation with examples on this kind of setup ?
Network layout and running-config is attached.