Cisco ASR 5000 Series, Обзор продукта

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GTPP Storage Server Overview
▀ Network Deployments and Interfaces
▄ Cisco ASR 5000 Series Product Overview
OL-22938-02
The logical accounting context in the SGSN Service on an SGSN and the GGSN Service on a GGSN facilitate:
GPRS Tunneling Protocol Prime (GTPP) configuration
UDP interface to the GSS
Optional Ga interface to a Charging Gateway Function (CGF)
Optional Network-requested PDP context processing
The source context of the GSN usually includes the
Access Point Name (APN) configuration
RADIUS authentication configuration (Auth.cfg) and the interface (AAA) to the authentication server
GGSN or SGSN service(s) and Gn interface to another GSN
The GGSN destination context (not supported by SGSN) facilitates:
IP address pools
Gi interface to the Packet Data Network (PDN)
In order to support a GSS, the GSN system is configured with two components:
GTPP Storage Server (GSS) is configured in the same context as the GSN service(s) or any other accounting
context. The configuration of the GSN initiates the tasks that communicate with the GSS.
UDP interface on the GSN is bound to the GTPP Storage Server (GSS). The UDP interface is a proprietary
interface used by the GSN system to communicate with the GSS.
Cluster Mode GSS Deployment in GPRS/UMTS Network
The following figure shows a typical deployment of the cluster-aware GSS nodes in a GPRS/UMTS network with a
Common Storage System. The GSS nodes, connecting through switches, could be connected to either a GGSN or an
SGSN. As described earlier, the cluster nodes connect to the GGSN source context or the SGSN accounting context via
the UDP interface.
The GSS cluster nodes process as stand-alone nodes with one in primary or active mode and the other in standby mode
as a redundant backup system.