This will work in a corporate ADSL enviroment ,i.e where ADSL is used to network customer sites to a centyral host.Backup will work on failure of the Line ,sync or Central host but NOT if there are Radius issues etcip route 0.0.0.0 0.0.0.0 87.132.23....
Beware ,You may not just crash the router ,you could blow something on the module or the router itself .My advice if Cisco say not to do it on a 3600 ,dont do it..Ive seen a 7507 router crash before now and its supposed to be hot swap capable... .
Also think about a 1401 ATM router.Uses compatible memory to a 1603 and cheap as chips to buy.A useful addition to any LAB since it gives you an ATM interface to play with .A bonus is you can use it as an ADSL router (coupled with a suitable ATM25 AD...
AS per my other response .I found I needed to do this on a 1401 with FW IOS for certain websites AND Outlook express to work. Not exactly well documented though and it does open your network to all JAVA. i.e :- ! ip inspect name ethernetin ftp ip ins...
Without seeing your config or knowing your network topology it could be anything. But If I were you I would use the CLI to enable a JAVA access-list under the global "IP inspect http" command and map it to a permit all access-list .I found I needed t...