The mobile station (MS) must use Remote Authentication Dial-In User Service (RADIUS) for authentication and authorization, and the RADIUS server must support the Framed-Route attribute (attribute 22).
The MS enables a router to create a Public Data Network (PDN) session, which the Gateway GPRS Support Node (GGSN) authorizes using the RADIUS server. The RADIUS server authenticates the router and includes a Framed-Route attribute in the access-accept response packet. The allowed IPv4 address range is connected to the packet data protocol (PDP) context or Evolved Packet System (EPS) bearer of the user device and is provided by RADIUS in the Framed-Route attribute when either are created.
The Framed-Route attribute also specifies the subnet routing information to install in the GGSN for the user device. If the GGSN receives a packet with a destination address matching the Framed-Route, the packet is forwarded to the user device through the associated PDN session.
When configured, the Framed-Route attribute is automatically downloaded to the GGSN during the RADIUS authentication and authorization phase of the PDN session. If routing behind the MS has not been enabled, the GGSN ignores the Framed-Route attribute. Routes are deleted when the MS session is no longer active.
Note
Ericsson Enterprise Wireless Solutions does not currently support routing behind the MS. Contact Ericsson Enterprise Wireless Solutions Sales for more information.