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Webcast-Catalyst9k
New Member

dsl setup

hi there, im a little stuck on my config, I need to put my ppp username and password in for my isp, I have seen this on an example config, what is the ppp hostname and password, and the ppp sent username, which ones do I need to use ?

thanks

Carl

interface dialer1

ip address negotiated

no ip directed-broadcast

ip nat outside

encapsulation ppp

dialer pool 1

ppp chap hostname <username>

ppp chap password <password>

ppp pap sent-username <username> password <password

6 REPLIES

Re: dsl setup

It depends on what PPP authentication method your ISP uses - I would think most use CHAP. There shouldn't a problem having both configured but your router will use the method that is asked for when authenticating.

My ADSL PPP config looks like:

interface Dialer1

ip address negotiated

ip nat outside

encapsulation ppp

dialer pool 1

dialer-group 1

no cdp enable

ppp authentication chap pap callin

ppp chap hostname my-adsl-login

ppp chap password my-adsl-password

!

HTH

Andy

New Member

Re: dsl setup

Hi Andy

what us "ppp authentication chap pap callin"

what is the callin for ?

also why is there a dialer pool 1, and dialer-group 1 ?

thanks

Carlos

Re: dsl setup

It means that for PPP authentication it will try CHAP, then PAP. The 'callin' parameter means it won't attempt to authenticate the peer when it calls out (it initiates the connection as opposed to the ISP initiating the connection. If you don't have this it attempts to authenticate the remote ADSL peer (the ISP).

You can watch what goes on if you use the following debug commands:

debug ppp negotiation

debug ppp authentication

HTH

Andy

New Member

Re: dsl setup

thank you for the reply, what do you mean it wont attempt to authenticate the peer when it calls out ? do you mean it trys to authenticate there end and not them authenticating my router ?

thanks

Carlos

Re: dsl setup

Yes. By default a Cisco router configured for PPP/CHAP will attempt to athenticate the router it has called as well as sending it's own credentials to the remote peer. Configuring 'callin' disables this so when it initiates the call it sends its own authentication details but doesn't bother authenticating the remote peer.

HTH

Andy

New Member

Re: dsl setup

I've c837 and this config running well:

ppp authentication pap chap callin

ppp chap hostname

ppp chap password 0

ppp pap sent-username password 0

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