I am working for a compnay that has 150+ branch offices. We wish to configure a VPN solution that is scalable, will work if an IP address is changed, and will not allow the branches to create tunnels to themselves (not alllow DMVPN spoke-to-spoke).
I have read some stuff on DMVPN that makes it sound like this is possible, but all of the configuration examples I have seen indicate that the remote sites will automatically configure the spoke tunnel.
Thank you for your assistance.
All routers are 1751 with VPN modules and running at least 12.0, most are upgraded to at least 12.2, and a couple have been upgraded to 12.3(22).