The SR OS supports LUDB lookup for WPP authentication. Users can optionally configure LUDB using the grp-if>wpp context to return the WPP-related configuration attributes (such as a portal name, initial-sla-profile, initial-sub-profile, and so on) for an IPoE host. The system can access LUDB when creating the initial host before WPP authentication. The LUDB returned attribute overrides the corresponding configuration under the group-interface context.
A LUDB lookup is performed by the system in the following cases.
when a host is created
when the system restores a host after a disconnect
If the WPP LUDB lookup returns an authentication policy, it is used for WPP RADIUS authentication. When WPP LUDB is configured, the authentication policy on group-interface is optional and only used by the WPP if there is no authentication policy returned from the WPP LUDB lookup.