I currently have a DMVPN cloud that encompasses most of about 25 North American sites. It's basically T1 connected 2651's homing back to a pair of 3745's on a DS3 connection. What I would like to do is add a DSL interface to all of my North America routers and enable a secondary (backup) cloud in case of T1 failures. Is this possible? I am willing to look at other solutions as well. (I had also given thought to homing the DSL links to s 3005 I have here as well, basically making a static connection with a high cost that would switch over if the site T1 went down.)
Thanks in advance.