GSN-Lite Interfaces

GSN-Lite, as an SGSN, supports interfaces with the following elements in a GPRS network:

Base Station Subsystem (Gb) Supports Network Services over Frame Relay using the E1 interface. The interface can be supported as non-channelized using the entire interface of 2Mbps or channelized into 64 kbps channels. Alternatively, Network Services may be supported over IP, a non-standard interface HLR (Gr), EIR (Gf), SMS-IWMSC (Gd), MSC/VLR (Gs) Supports MAP over SS7 using E1 interfaces towards the HLR, the EIR, and the SMS-IWMSC; and the BSSAP+ over SS7 using E1 interfaces towards the MSC/VLR. IP connectivity is also supported towards these network nodes using SIGTRAN instead of the conventional MTP3 in SS7 suite of protocols Charging Gateway (Ga) Supports GTP’ over UDP/IP to connect with an external Charging Gateway Other GSN (Gn Supports GTP over UDP/IP to connect with external SGSNs and GGSNs

As a GGSN, GSN-Lite supports interfaces to the following elements:

GSN-Lite supports four E1/T1 interfaces for SS7 or Frame Relay links using Adax's High Density Channelized 4 port E1/T1 card. It also supports up to 128 Channels of protocol processing. A maximum of 8 MTP-2 links are supported. Rest of the links can be used for Frame Relay. For IP interfaces, 10/100 Mbps Ethernet cards are used.

Configuration and Manageability

The Operation and Maintenance (O&M) functionality for the GSN supports Configuration Management, Fault Monitoring, Status Monitoring, and Statistics Collection.

Configuration Management: includes system parameter specifications, the addresses of network components, and the configuration parameters of protocol stacks.

Fault Monitoring: The principal goal of Fault Monitoring is to identify the faults that occur in the GSN. In the GSN, fault monitoring is achieved by generating alarms.

Status Monitoring: This involves the collection and analysis of data related to a GSN node. The GSN allows the periodic collection of statistics and recording thereof in a log file for analysis.

GSN-Lite provides management capability with an intuitive and easy-to-learn GUI-based Manager and remote management with an SNMP agent shown below:

Illustration 1: GSN-Lite Main Configuration Panel

Illustration 2: GSN-Lite Statistics Collection Panel

SNMP-Based Management

A Simple Network Management Protocol (SNMP) Manager, through an SNMP Agent, can perform all features supported by the Local Manger. The SNMP Agent, along with a comprehensive SMI v1-compliant MIB, is provided with GSN-Lite.

The SNMP Agent has been developed using the Enhanced Management Agent Through Extensions Sub Agent Development Kit (EMANATE SADK)). The GSN-Lite agent is based on the Emanate Master Agent/Sub Agent architecture.

The Master Agent is in charge of authentication, authorization, access control, and privacy mechanisms. It receives SNMP requests and processes them by contacting the appropriate sub agent. The Sub Agent is specific to the application and provides the required instrumentation for the objects defined in the MIB. The Master Agent is Multilingual (SNMP v1, v2, and v3) The Sub Agent for the GPRS Support Node is protocol independent.

System Requirements and Capacity

Hardware Requirements

The recommended server configuration for installing GSN-Lite on Linux is as follows:

• 3.6 GHz Dual Xeon processor with 2MB L2 Cache
• 2 GB DRAM, 400 MHz DDR2,
• Ultra320 SCSI - Universal Hot Plug, High speed SCSI drives 40 GB
• 3 PCI slots and one hot-plug PCIx card slot Eg: HP ProLiant DL380 Generation 4 server

• One Adax HDC PCI card

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