Some times we need to connect an ASA to a DSL/FTTC line directly vi a modem, either for a backup line (see previous posts) or for a primary internet connection. Lets walk through the process here:
Stage 1- Set up a VPDN group
As the modem takes care of the complicated VCI/VPI type settings, we will use pope with just a username and password. This setup works fine with UK based poppa type connections too.
vpdn group MYGROUP request dialout pppoe vpdn group MYGROUP localname <dsl_username> vpdn group MYGROUP ppp authentication chap
Stage 2 – Set up the local user for DSL authentication
vpdn username <dsl_username> password <dsl_password>
Stage 3 – Attach to the outside interface
Assuming the DSL modem is plugged into the OUTSIDE interface. Note the default route is set at the same time.
interface GigabitEthernet1/1 nameif OUTSIDE security-level 0 pppoe client vpdn group MYGROUP ip address pppoe setroute
ASA# show vpdn pppinterface PPP virtual interface id = 1 PPP authentication protocol is CHAP Server ip address is A.B.C.D Our ip address is W.X.Y.Z Transmitted Pkts: 689943, Received Pkts: 1276163, Error Pkts: 0 MPPE key strength is None MPPE_Encrypt_Pkts: 0, MPPE_Encrypt_Bytes: 0 MPPE_Decrypt_Pkts: 0, MPPE_Decrypt_Bytes: 0 Rcvd_Out_Of_Seq_MPPE_Pkts: 0