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Configuring Dynamic Authentication for PPP Subscribers

You can configure a dynamic profile that includes PPP authentication that enables PPP clients to dynamically access the network. You can specify either CHAP or PAP authentication.

For dynamic interfaces, the router supports unidirectional authentication only—the router always functions as the authenticator. When you configure PPP authentication in a dynamic profile, the pap and chap statements do not support any additional configuration options, including the passive statement.

Note: Dynamic profiles for PPP subscribers are supported only on PPPoE interfaces.

To configure authentication in a dynamic profile for PPP subscriber interfaces:

  1. Name the dynamic profile.
    [edit]user@host# edit dynamic-profiles vod-profile-25
  2. Configure the interfaces and unit for the dynamic profile. Use pp0 for the interface type and the JUNOS predefined variable for the unit.
    [edit dynamic-profiles vod-profile-25]user@host# edit interfaces pp0 unit $junos-interface-unit
  3. Configure PPP options.
    [edit dynamic-profiles vod-profile-25 interfaces pp0 unit “$junos-interface-unit”]user@host# edit ppp-options
  4. Specify the authentication protocol used in the dynamic profile. You can configure either CHAP or PAP. There are no additional options for either authentication protocol.
    [edit dynamic-profiles vod-profile-25 interfaces pp0 unit “$junos-interface-unit” ppp-options]user@host# set chap

Published: 2010-04-15

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