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Placing Dynamic IP Routes in the Routing Table

If you want to insert a dynamic IP route into the routing table of the relevant virtual router to point to the subscriber’s subinterface, you can use the Framed-Route [22] RADIUS attribute to do so. Defined by RFC 2865—Remote Authentication Dial In User Service (RADIUS) (June 2000), the Framed-Route attribute can be returned in Access-Accept messages to specify the route as follows:

Framed-Route = ipAddress/mask nextHop

For dynamic IP interfaces, the next hop might not be known when you create the user record. In this case, use the value 0.0.0.0 for the next hop; the E-series router then assigns the subinterface associated with the user as the next hop in the routing table.

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