Re: Cisco 877 and 857 ADSL routers
If you use an ATM interface you are doing PPPoA.
If your service provider requires PPPoE you need a cisco 861,871, or 881.
These routers have one wan port Fastethernet4 which connects you to your provider.
Than your configurations is done under the dialer interface and mapped to Fastethernet4
I could be wrong here, but I never seen PPPoe over an ATM interface
Thats because you wont :-P PPPoE is over Ethernet. PPPoA your more common ADSL connection is over an ATM. There 2 entirely diffrent mediums.