[c-nsp] Bellsouth DSL / PPPoE config

[Josh Duffek]

Brian,
I haven't done any PPPoE configs yet but your DDR/PPP stuff looks right.
During the LCP negotiation they will decide on chap or pap...I have
never seen both but I'm not going to tell you it's not possible...but I
don't think it is.

I guess when you are ready to bring the connection up, if you can run a
"debug ppp nego" and you can see in LCP which one they pick...and after
LCP opens how it goes.

Thanks,

josh duffek    network engineer
consultantjd16 at ridemetro.org

> -----Original Message-----
> From: cisco-nsp-bounces at puck.nether.net [mailto:cisco-nsp-
> bounces at puck.nether.net] On Behalf Of Brian Feeny
> Sent: Thursday, March 03, 2005 4:23 PM
> To: cisco-nsp
> Subject: [c-nsp] Bellsouth DSL / PPPoE config
> 
> 
> I am going to be configuring a PPPoE circuit for someone, just
ethernet
> talking to a DSL bridge.  I have heard that Bellsouth requires both
PAP
> and chap simultaneous authentication for their BBG, does anyone know
if
> thats true?
> 
> If so, I was considering this for PPPoE config:
> 
> vpdn-group 1
>   request-dialin
>   protocol pppoe
> 
> int e0
>   no ip add
>   pppoe enable
>   pppoe-client dial-pool-number1
> 
> int Dialer1
>   desc Bellsouth DSL
>   ip add negotiated
>   ip mtu 1492
>   ip tcp adjust-mss 542
>   ip nat outside
>   encap ppp
>   dialer pool 1
>   dialer-group 1
>   ppp authentication chap pap callin
>   ppp chap hostname username at bellsouth.net
>   ppp chap password somepassword
>   ppp pap sent-username username at bellsouth.net password somepassword
>   crypto map myMap2
> 
> dialer-list 1 protocol ip permit
> 
> 
> I am not sure if it really does pap and chap both, was hoping someone
> here who has setup bellsouth DSL could tell me.
> 
> Normally I run my GRE tunnels at 1440, I think with the above using
> PPPoE I should drop it 8 more to 1432 to be safe, anyone know what has
> worked?  I have heard knocking down the mss is a good idea too from
> cisco.com.
> 
> Brian
> 
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