COBHAM Sailor 250 FleetBroadband, Руководство по обучению, Страница: 124 / 270

114
Chapter 4
Interfaces
4
4.7.2 The Network Management system
With the built-in router functionality the system offers a flexible
use of the data channel of the BGAN service. You can configure
the use of the data channel by defining network user groups
and profiles. The following picture gives an overview over the
parameters involved. The network user group you belong to is
determined by one or more of the following:
• The IP address of the device you are using
• The MAC address of the device you are using
• The LAN port you connect to
A connected IP device will automatically be assigned to the default
network user group, if it is not specified otherwise.
For specific purposes like video streaming, a server on the
network, a fixed IP address on the connected device or changing
the startup mode of a connection, you must set-up network groups
with specific primary and/or secondary profiles. How to do this is
described in the following sections.
Network User Groups (NUG)
The network management system divides the users of the terminal
into network user groups. Each network user group has a profile
which determines how the users connect to the Inmarsat BGAN
network. The network user groups can allow or restrict certain
services for different users.
You can have up to 11 network user groups and global IP
addresses.
Defining a Network User Group
The network user groups determine settings such as:
QoS (Standard/Streaming),
IP addressing (Static/Dynamic)
Internet access mode (Router Mode/Bridge Mode/No Internet
Access)
Identifying a network device
The network devices are identified by their IP address, MAC
address and (optionally) device name.
Associating the network user group and the network device
The network classification table determines which devices should
belong to which network user group. When a network device is
connected, the terminal runs through the network classification
table to check if the new connection matches any of the entries
in the table. When a match is found, the terminal establishes a
packet data connection (PDP context) with the settings defined in
the belonging network user group, and the device is ready for use
with the terminal.
Figure 4-34
Figure 4-35
Figure 4-36