Co-Located Deployments - Cisco ASR 5000 series Product Overview

CDMA2000 Wireless Data Services
R-P Interface
This interface exists between the Packet Control Function (PCF) and the PDSN/FA and implements the A10 and A11
(data and bearer signaling respectively) protocols defined in 3GPP2 specifications.
The PCF can be co-located with the Base Station Controller (BSC) as part of the Radio Access Node (RAN). The
PDSN/FA is connected to the RAN via Ethernet line cards installed in the rear of the chassis. The system supports either
8-port Fast Ethernet line cards (Ethernet 10/100) or single-port small form-factor pluggable (SFP) optical gigabit
Ethernet line cards (Ethernet 1000) or four-port Quad Gig-E line cards (QGLC). These line cards also support outbound
IP traffic that carries user data to the HA for Mobile IP services, or to the Internet or Wireless Access Protocol (WAP)
gateway for Simple IP services.
Pi Interfaces
The Pi interface provides connectivity between the HA and its corresponding FA. The Pi interface is used to establish a
Mobile IP tunnels between the PDSN/FA and HA.
PDN Interfaces
PDN interface provide connectivity between the PDSN and/or HA to packet data networks such as the Internet or a
corporate intranet.
AAA Interfaces
Using the LAN ports located on the Switch Processor I/O (SPIO) and Ethernet line cards, these interfaces carry AAA
messages to and from RADIUS accounting and authentication servers. The SPIO supports RADIUS-capable
management interfaces using either copper or fiber Ethernet connectivity through two auto-sensing 10/100/1000 Mbps
Ethernet interfaces or two SFP optical gigabit Ethernet interfaces. User-based RADIUS messaging is transported using
the Ethernet line cards.
While most carriers will configure separate AAA interfaces to allow for out-of-band RADIUS messaging for system
administrative users and other operations personnel, it is possible to use a single AAA interface hosted on the Ethernet
line cards to support a single RADIUS server that supports both management users and network users.
Important:
highest performance. The out-of-band local context should not be used for service subscriber AAA functions.

Co-Located Deployments

An advantage of the system is its ability to support both high-density PDSN/FA and HA configurations within the same
chassis. The economies of scale presented in this configuration example provide for both improved session handling and
reduced cost in deploying a CDMA2000 data network.
The following figure depicts a sample co-located deployment.
OL-22938-02
Subscriber AAA interfaces should always be configured using Ethernet line card interfaces for the
CDMA2000 Data Network Deployment Configurations ▀
Cisco ASR 5000 Series Product Overview ▄