Cisco Cisco Packet Data Interworking Function (PDIF) Guía Para Resolver Problemas
Understanding the Service Operation and Configuration
Terminology ▀
Cisco ASR 5000 Series Packet Data Serving Node Administration Guide ▄
OL-22939-01
bound to a logical interface will cause the logical interface to take on the characteristics of an R-P interface
within a 3G CDMA2000 network.
within a 3G CDMA2000 network.
Dynamic binding associates a subscriber to a specific egress context based on the configuration of their profile or
system parameters. This provides a higher degree of deployment flexibility as it allows a wireless carrier to support
multiple services and facilitates seamless connections to multiple networks.
system parameters. This provides a higher degree of deployment flexibility as it allows a wireless carrier to support
multiple services and facilitates seamless connections to multiple networks.
Services
Services are configured within a context and enable certain functionality. The following services can be configured on
the system:
the system:
PDSN services: Required for both Simple IP and Mobile IP applications, PDSN services define PDSN
functionality for the system. The PDSN service must be bound to a logical interface within the same context.
Once bound, the interface takes on the characteristics of an R-P interface. Multiple services can be bound to the
same logical interface. Therefore, a single physical port can facilitate multiple R-P interfaces.
Once bound, the interface takes on the characteristics of an R-P interface. Multiple services can be bound to the
same logical interface. Therefore, a single physical port can facilitate multiple R-P interfaces.
The system treats the connection between the PCF and the PDSN service as a VPN (referred to as an RP-
VPN). Individual R-P sessions are identified on this RP-VPN using the PCF address, the PDSN interface
address, and the R-P Session ID.
VPN). Individual R-P sessions are identified on this RP-VPN using the PCF address, the PDSN interface
address, and the R-P Session ID.
FA services: Currently supported only for use in CDMA 2000 networks, FA services are configured to support
Mobile IP and define FA functionality on the system.
The system supports multiple Mobile IP configurations. A single system can perform the function of a FA
only, an HA only, or a combined PDSN/FA/HA. Depending on your configuration, the FA service can create
and maintain the Pi interface between the PDSN/FA and the HA or it can communicate with an HA service
configured within the same context.
only, an HA only, or a combined PDSN/FA/HA. Depending on your configuration, the FA service can create
and maintain the Pi interface between the PDSN/FA and the HA or it can communicate with an HA service
configured within the same context.
The FA service should be configured in a different context from the PDSN service. However, if the FA service
will be communicating with an HA that is a separate network element, it must be configured within the same
context as and be bound to the Pi interfaces that allow it to communicate with the HA.
will be communicating with an HA that is a separate network element, it must be configured within the same
context as and be bound to the Pi interfaces that allow it to communicate with the HA.
HA services: Currently supported only for use in CDMA 2000 networks, HA services are configured to support
Mobile IP and define HA functionality on the system. Depending on your configuration, the HA service can be
used to terminate the Pi interface from the FA or it can communicate with an FA service configured in the
same context.
used to terminate the Pi interface from the FA or it can communicate with an FA service configured in the
same context.
If the HA service is configured within the same system as the PDSN/FA, then it should be configured within
the same context as the FA service. This context, then, would also facilitate the PDSN interfaces to the data
network.
the same context as the FA service. This context, then, would also facilitate the PDSN interfaces to the data
network.
If the HA service is configured in a separate system, it should be configured in the same context as and bound
to the Pi interfaces that allow it to communicate with the FA.
to the Pi interfaces that allow it to communicate with the FA.
LAC services: LAC services are configured on the system to provide Layer 2 Tunneling Protocol (L2TP) access
concentrator (LAC) functionality. LAC services can be configured and used within either CDMA 2000 or
GPRS/UMTS networks to provide secure tunneling to an L2TP network server (LNS) on a remote PDN.
GPRS/UMTS networks to provide secure tunneling to an L2TP network server (LNS) on a remote PDN.
The following figure diagrams the relationship between services, interfaces, and contexts within the system for CDMA
2000 networks.
2000 networks.