I read this doc from Cisco and it say that you have to turn off the ip routing on the router (no ip routing):
I would like to know if is possible to config a PPPoE PC Client and not disable the ip routing on the router.
I have this scenario in mind:
Internet --> [atm interface]Router 877W [fastethernet 0] ---> [Outside] 3rd party firewall with pppoe client [inside] ---> [FE 1,2,3 and WLAN] 877W
By this way, the PCs on the LAN are able to connect to the 877W switch or WLAN interface, and navigate to internet trough the firewall gateway.