User's Manual

Mobile WiMAX RAS SPI-2L10 System Description/Ed.00
© SAMSUNG Electronics Co., Ltd.
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Interfacing with auxiliary devices
The SPI-2L10 supports the Ethernet interfaces (User Defined Ethernet (UDE)) for
connecting the providers auxiliary devices (for example, an environment monitoring
device). The SPI-2L10 also provides traffic paths along which maintenance traffic can be
transmitted between the auxiliary devices and the remote auxiliary device monitoring
server.
For the packets received from an auxiliary device via the UDE port, the SPI-2L10
translates their source IP address (auxiliary device's private IP address Æ RAS’s public IP
address) and then sends them to the external auxiliary device monitoring server. For the
packets received from the external via the backhaul port and also destined to an auxiliary
device, the SPI-2L10 translates their destination IP addresses (RAS’s public IP address Æ
auxiliary device's private IP address) and sends them to the auxiliary device via the UDE
port. To accomplish this, the operator must set an NAT rule in the PI-2L10 and also must
configure IP address and port information in the auxiliary device monitoring server to make
it communicate with the specified auxiliary devices.
Only one UDE port can be used. The SPI-2L10 can interface with up to four auxiliary
devices. The bandwidth for an auxiliary device is limited within 128 kbps.
Operator Authentication Function
The SPI-2L10 provides the authentication and the permission management functions for the
operator who manages the Mobile WiMAX system. The operator accesses the SPI-2L10 by
using the operator’s ID and password via Web-EMT or IMISH and the SPI-2L10 assigns the
operation right in accordance with the operators level.
The SPI-2L10 carries out the logging function for access successes or failures and login
history, etc. This is not a function provided in interoperation with the authentication server
but a local authentication function of the RAS.
Maintenance Function with Enhanced Security Function
When communicating with the WSM, the SPI-2L10 supports SNMPv2c and Simple Network
Management Protocol version 3 (SNMPv3), and FTP and SSH File Transfer Protocol (SFTP)
for security. When communicating with the console terminal, the SPI-2L10 supports Hyper
Text Transfer Protocol over SSL (HTTPs) and Secure Shell (SSH).
On-line Software Upgrade
When a software package is upgraded, the SPI-2L10 can upgrade the package while running
old version of software package. The package upgrade is progressed in the following
procedure: ‘Add New Package Æ Change to New package Æ Delete Old Package’.
In package upgrade, the service is stopped temporarily because the old process is
terminated and the new process is started in the ‘Change to New package’ stage.
However, since OS is not restarted, the service will be provided again within a few minutes.
After upgrading software, the SPI-2L10 updates the package stored in a non-volatile storage.
In addition, the SPI-2L10 can re-perform the ‘Change to New package’ stage to roll back
into the previous package before upgrade.