Cisco Cisco Packet Data Interworking Function (PDIF) Guía Para Resolver Problemas
Engineering Rules
▀ Interface and Port Rules
▄ Cisco ASR 5000 Series Packet Data Serving Node Administration Guide
OL-22939-01
Interface and Port Rules
The rules discussed in this section pertain to the Ethernet 10/100 line card, the Ethernet 1000 line card amd the four-port
Quad Gig-E line card and the type of interfaces they facilitate, regardless of the application.
Quad Gig-E line card and the type of interfaces they facilitate, regardless of the application.
R-P Interface Rules
The following engineering rules apply to the R-P interface:
An R-P interface is created once the IP address of a logical interface is bound to a PDSN service.
The logical interface(s) that will be used to facilitate the R-P interface(s) must be configured within an ―ingress‖
context.
PDSN services must be configured within an ―ingress‖ context.
At least one PDSN service must be bound to each interface; however, multiple PDSN services can be bound to a
single interface if secondary addresses are assigned to the interface.
Each PDSN service must be configured with the Security Parameter Index (SPI) of the Packet Control Function
(PCF) that it will be communicating with over the R-P interface.
Multiple SPIs can be configured within the PDSN service to allow communications with multiple PCFs over the
R-P interface. It is best to define SPIs using a netmask to specify a range of addresses rather than entering
separate SPIs. This assumes that the network is physically designed to allow this communication.
separate SPIs. This assumes that the network is physically designed to allow this communication.
Depending on the services offered to the subscriber, the number of sessions facilitated by the R-P interface can
be limited.
Pi Interface Rules
FA to HA Rules
When supporting Mobile IP, the system can be configured to perform the role of a FA, an HA, or both. This section
describes the engineering rules for the Pi interface when using the system as a FA.
describes the engineering rules for the Pi interface when using the system as a FA.
The following engineering rules apply to the Pi interface between the FA and HA:
A Pi interface is created once the IP address of a logical interface is bound to an FA service.
The logical interface(s) that will be used to facilitate the Pi interface(s) must be configured within the egress
context.
FA services must be configured within the egress context.