Руководство По Обслуживанию для Cisco Cisco Packet Data Gateway (PDG)

Generally Available    06-30-2010

PDIF Features in Release 9.0

1-29

This section provides information for new features in the Packet Data Interworking 
Function.

The PDIF can be configured with multiple IPsec traffic classes, each containing up to 128 
traffic selectors, which are used during traffic selector negotiation with UEs. Multiple traffic 
selectors allow the PDIF to direct outbound traffic to selected IP addresses based on the 
following protocols: IP, TCP, UDP, and ICMP. The PDIF can also direct TCP and UDP 
traffic to selected IP addresses and port ranges.

In this software release, the PDIF supports IPv4 traffic selectors only.

For mobile IP calls, the Selective Diameter Profile Update Request Control feature allows 
WiFi data-only sessions to co-exist with VoIP sessions on the PDIF platform.

When the PDIF is accessed by voice-enabled devices, it needs to interact with the HSS in 
order for a subscriber session to access the IP core network. When the PDIF is accessed by 
data-only devices, there is no need to interact with the HSS.

This feature is used to identify which subscriber sessions need to have the PDIF and the 
HSS exchange Diameter Profile Update Request (PUR) and Profile Update Answer (PUA) 
messages, and allows the PDIF to handle the call setup for a data-only client without having 
to interact with the HSS.

Selective PUR profiles on the AAA server are mapped to subscribers during AAA 
authentication via the Radius vendor-specific attribute (VSA) FMC-Type. FMC-Type has 
these possible values: voice or data. When the AAA server sets the FMC-Type value to 
voice, the PDIF and the HSS exchange PUR and PUA messages. When the AAA server sets 
the FMC-Type value to data, the PDIF and the HSS do not exchange PUR and PUA 
messages.

For more information about PDIF features and functions, see the Packet Data Interworking 
Function Administration Guide.