Cisco Cisco Packet Data Interworking Function (PDIF) Guida Dell'Amministratore
Cisco ASR 5x00 Home Agent Administration Guide ▄
13
Chapter 1
HA Overview
The Home Agent (HA) allows mobile nodes to be reached, or served, by their home network through its home address
even when the mobile node is not attached to its home network. The HA performs this function through interaction with
a Foreign Agent (FA) that the mobile node is communicating with using the Mobile IP (MIP) standard. Such
transactions are performed through the use of virtual private networks that create MIP tunnels between the HA and FA.
even when the mobile node is not attached to its home network. The HA performs this function through interaction with
a Foreign Agent (FA) that the mobile node is communicating with using the Mobile IP (MIP) standard. Such
transactions are performed through the use of virtual private networks that create MIP tunnels between the HA and FA.
When functioning as an HA, the system can either be located within the carrier’s 3G network or in an external enterprise
or ISP network. Regardless, the FA terminates the mobile subscriber’s PPP session, and then routes data to and from the
appropriate HA on behalf of the subscriber.
or ISP network. Regardless, the FA terminates the mobile subscriber’s PPP session, and then routes data to and from the
appropriate HA on behalf of the subscriber.
This chapter includes the following sections:
HA supports IPSec features that you may wish to include in your configuration. Refer to the StarOS IP Security (IPSec)
Reference for additional information
Reference for additional information