Cisco ASR 5000 Series, Обзор продукта

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CDMA2000 Wireless Data Services
▀ CDMA2000 Data Network Deployment Configurations
▄ Cisco ASR 5000 Series Product Overview
OL-22938-02
CDMA2000 Data Network Deployment Configurations
This section provides examples of how the system can be deployed within a wireless carrier‘s network. As noted
previously in this chapter, the system can be deployed in standalone configurations, serving as a Packet Data Serving
Node/Foreign Agent (PDSN/FA), a Home Agent (HA), or in a combined PDSN/FA/HA configuration providing all
services from a single chassis. Although XT-2 systems are highly flexible, but XT-2 systems are pre-loaded with
purchased services and operator can not add additional services through license. Operator needs to predefine the
services required on a system.
Standalone PDSN/FA and HA Deployments
The PDSN/FA serves as an integral part of a CDMA2000 network by providing the packet processing and re-direction
to the mobile user's home network through communications with the HA. In cases where the mobile user connects to a
PDSN that serves their home network, no re-direction is required.
The following figure depicts a sample network configuration wherein the PDSN/FA and HA are separate systems.
Figure 71. PDSN/FA and HA Network Deployment Configuration Example
The 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 an FA that the
mobile node is communicating with using the Mobile IP protocol. Such transactions are performed through the use of
virtual private networks that create Mobile IP tunnels between the HA and FA.
Interface Descriptions
This section describes the primary interfaces used in a CDMA2000 wireless data network deployment.