User guide

Introduction to the GX400
Rev 1.0 Jun.11 17
The IPsec architecture model includes the Sierra Wireless AirLink gateway as a
remote gateway at one end communicating, through a VPN tunnel, with a VPN
gateway at the other end. The remote gateway is connected to a Remote network
and the VPN is connected to the Local network. The communication of data is
secure through the IPsec protocols.
Figure 1-5: IPsec Architecture
GRE
GRE (Generic Routing Encapsulation) tunnel is used to carry non-IP packets
through an IP Network. Non-IP packets that are sent over the GRE tunnel need to
be first encapsulated. Hence, ALEOS is used to configure and encapsulate non-
IP packets and transmit over IP through the GRE tunnel.
Applications
Events Reporting
Events Reporting is the AirLink modem’s new software feature provided via
ACEmanager. It allows the users to generate reports from the events that take
place. Event Reporting Protocol is an intuitive embedded protocol, which
automatically formats the messages based on an event trigger. The messages
generated are then reported to the remote server.
Software
The GX400 modem comes with the following software:
• ACEview, the software for the GX400 which allows you to monitor your
connections.
• The driver that forms the interface between the GX400 and your Windows
operating system when using USB virtual Ethernet or USB virtual serial.
• The firmware that is stored in non-volatile memory and includes
ACEmanager.