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Forum Replies

  1. Hi Rene,

    Could you give any practical example for the usage of PPP ?

    I am still interested in understanding the usage part for this protocol.

  2. How about a PAP example too? I used the following commands:

    Username TRINITY password cisco

    int s0/0
       encapsulation ppp
       ppp authentication pap
       ppp pap sent-username NEO password cisco

    But I get the following error:

    AAA/AUTHEN/PPP (0000010F): Pick method list 'default'

  3. Hello Chris

    In order for PPP authentication to use the PAP password that you have configured, it is necessary to specify the method by which AAA will occur for PPP. By default, the local database is used, that is the credentials created with the username my_username password my_password command. If that has not been set, then authentication cannot take place. Note that what you have configured about is the “calling” side. The other side must be configured with this username and password.

    Cisco has excellent documentation on how to set up the PAP connection

    ... Continue reading in our forum

  4. Hello team

    When we want to enable serial authentication between two routers via PAP or CHAP, do we have to configure both routers as authenticator and to be authenticated for each one? In your CHAP example configuration could we consider R1 as authenticator and omit the command ppp authentication CHAP in R2 as R2 will be the to be authenticated router? Also even if a router is to be authenticated router, does it need the command ppp authentication PAP / CHAP?

  5. @jmwalker24 The reason you would care is if you are an ISP. If you are serving customers a DSL connection you want to making sure only paying customers can use your network. Since PPPoE (which uses PPP )is used for DSL connections you can use PAP and CHAP authentication to keep unwanted users off your network. I hope this helps!

    Scott Weller

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