I had to use a console cable and confreg to break into a router that I copied a new config into.
I saved the current config to a TFTP server, made my changes (we were swapping ISPs so just changing IP addys), and once I did "copy tftp startup", I was locked out. I am trying to figure out WHY This happened so I never do it again!
There were some lines that began with aaa , and I think I read somehwere those will not treat you kindly if you import them to the router.
I also noticed if I did "copy tftp running", that the config would "merge", i.e. I would wind up with some duplicate statements, one with the old IPs and one with the new IPs. Is that normal?
Thanks to anyone who chooses to shed a little light on this, I appreciate it!