Feature Description
In private APN deployments, the SMF can support multiple PAPNs, requiring authentication and accounting with the enterprise AAA servers. As the AAA servers belong to different mobile virtual network operators (MVNOs), it is possible that their address ranges overlap. SMF uses Virtual Routing and Forwarding (VRF) functionality to support overlapping IP addresses for AAA servers.
For more information, refer to the Virtual Routing and Forwarding chapter.