I have been working on moving a Bank's ATM machine over from an old 2520 router to a newer 3640 router. The ATM machine works using BSTUN with a loopback address. I duplicated the configuration on the 2520 EXACTLY onto the 3640 but could not get the ATM machine talking with the new router, as soon as I put the old router back in place the ATM machine came up. Is there something easy I am missing when trying to make this switch? I can post the running configs of both if needed but it would require alot of editing (It is a bank..heh).... thanks in advance!
I have this problem too.