Cisco ASA 5505 PPPoE via DSL

Posted on 2009-02-10
Last Modified: 2013-12-14
Having trouble getting a public IP on the outside interface.

ASA 5505 running 8.0(2)
Westell E90610030-06 DSL box running current firmware.
Service provider is AT&T (Bellsouth)

DSL modem is in bridge mode.
Outside interface of 5505 is set to PPPoE with known good credentials.
I've tried CHAP and PAP authentication.

Last attempt, using MAC cloning, showed a PPPoE address of in the client monitor in ASDM. Authentication is still set to CHAP.

I've read that AT&T does a 2-hour IP lease, so my next step is to shut down the DSL router for 2 hours and try again.

I believe PPPoE debug is still broken in this ASA version, unfortunately.

Troubleshooting remotely with the end-user


interface Ethernet0/0 

mac-address nnnn.nnnn.nnnn

nameif Outside 

security-level 0 

pppoe client vpdn group <group1> 

ip address pppoe setroute 


vpdn group <group1> request dialout pppoe 

vpdn group <group1> localname <username> 

vpdn group <group1> ppp authentication chap 

vpdn username <username> password ******** store-local

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Question by:JayCeeZee

    Author Comment

    The "known good" credentials, weren't .

    Testing the new config....

    Accepted Solution

    It works, using PAP authentication.

    It was a bad PPPoE username.

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