Subscriber-host authentication, identification and IP address assignment can be performed by LUDB without the need to access the RADIUS server.
The LUDB is normally configured under the group-interface>ppp/dhcp hierarchy and can provide subscriber-identification parameters as well as IP addressing parameters:
Pool names for DHCP relay function (IPv4, IPv6 IA-NA, IPv6 IA-PD)
Fixed IP addresses – IPv4, IPv6 IA-NA, IPv6 IA-PD and IPv6 SLAAC prefix.
In case of capture SAP, the LUDB name configured under the capture SAP must match the LUDB name under the group-interface>dhcp/ppp hierarchy. If the LUDB names do not match, the subscriber-host instantiation fails.