Using The System As Both A Ggsn/Fa And An Ha - Cisco ASR 5000 Series Administration Manual

▀ Using the System as Both a GGSN/FA and an HA

Using the System as Both a GGSN/FA and an HA
The system supports both GGSN and Mobile IP functionality. For Mobile IP applications, the system can be configured
to perform the function of a Gateway GPRS Support Node/Foreign Agent (GGSNSN/FA) and/or a Home Agent (HA).
This example describes what is needed for and how a single system simultaneously supports both of these functions.
In order to support GGSN, FA, and HA functionality, the system must be configured with at least one source context
and at least two destination contexts as shown in the following figure.
The source context facilitates the following:
GGSN service(s) and Gn interface to the Service GPRS Support Node (SGSN)
GPRS Tunneling Protocol Prime (GTPP) configuration and Ga interface to the Charging Gateway Function
(CGF)
The destination context facilitates the following:
Access Point Name (APN) configuration
RADIUS authentication configuration and the interface to the authentication server
DHCP configuration and the interface to the DHCP server
IP address pools
Gi interface to the packet data network (PDN)
The Mobile IP destination context facilitates the following:
FA Service(s)
HA Service(s)
Gi interface to the packet data network (PDN)
ICC interface facilitating communication between the FA and HA services.
This configuration supports IP (transparent and non-transparent) and PPP PDP contexts as well as network requested
PDP contexts. In addition, Mobile IP and Proxy Mobile IP are supported for IP PDP contexts.
▄ Cisco ASR 5000 Series Gateway GPRS Support Node Administration Guide
GGSN and Mobile IP Service in a Single System Configuration Example
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