User's Manual

CHAPTER 2. System Overview

2-8

IP Address

When the SPI-2L10 does not separate the management network from the

network for user traffic, no additional IP address is needed. One of the two basic

IP addresses is used for interoperation with the WSM.

2.2.4 Maintenance Function

The SPI-2L10 interworking with the management system carries out the following

maintenance functions: system initialization and restart, management for system

configuration, management for the operation parameters, failure and status management for

system resources and services, statistics management for system resources and various

performance data, diagnosis management for system resources and services and security

management for system access and operation.

Keepalive Monitoring for ACR and RAS

The SPI-2L10 monitors the keepalive status for the ACR to check whether the logical

backhaul line to the ACR is connected or disconnected. If this line is disconnected, the SPI-

2L10 blocks RF output and continues to monitor the up/down status for the ACR.

Then, if the SPI-2L10 receives a response message from the ACR again, it decides that the

backhaul line is reconnected and starts to send RF output normally.

Graphic and Text-based Console Interface

The Mobile WiMAX System Manager (WSM) manages all RASs using the Database

Management System (DBMS) and the SPI-2L10 interoperates with the WSM.

Moreover, the SPI-2L10 interoperates with the console terminal to allow the operator to

connect directly to the system and carry out the operation and maintenance functions.

The operator can use the graphics-based console interface (Web-EMT, Web-based Element

Maintenance Terminal) or the text-based console interface (IMISH, Integrated

Management Interface Shell) according to preferences and work purposes.

The operator can access the console interfaces without separate software. For the Web-

EMT, the operator can log in to the system using Internet Explorer. For the IMISH, the

operator can log in to the system using the Secure Shell (SSH) in the Command window.

However, for the Web-EMT, the operator can connect to the system only from a PC where

a Web-EMT license is installed and which is authenticated.

The operator can view and configure the configuration and operational information and

perform fault and status monitoring, and so on using the console terminal. However, the

operator can perform resource grow/degrow or change the major parameter values only

using the WSM.