We have about 20 ASA5505's connected back to our VPN concentrator all using the same configs (other than the changes for the different internal network addressing). They all work fine. Now I've taken two more ASA5505's to setup through a different DSL provider that uses PPoE. I can get the ASA to authenticate and pull a valid address, but the VPN tunnel does not come up.
I can bring the ASA back to my house, remove the PPoE settings (my provider does not require) and plug it into my DSL conection and it comes right up. Is there any trick when using PPoE that you need to account for other than setting the PPoE username and password? When I look at the debug logs I don't see the external address that the ASA is given in any of the attempts to build a tunnel. I can post some of the errors but thought I'd post this first.