US Robotics USR803510 Guia do Utilizador Página 9

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Revision: 1.00 Copyright 2015 U.S. Robotics Corporation 9 | P a g e
While the WWAN network interface is always a direct connection to the Internet, or WAN, the Ethernet
interface and optional WLAN interface can act as either a WAN or a local Area Network (LAN). The LAN
interface allows local devices to connect to the Internet through the gateway.
The network interfaces available on the gateway are:
Ethernet interface: can be a WAN or LAN connection depending on the behavior of the WAN/LAN
switchover feature at start-up or can be set manually.
WWAN interface: always a WAN connection because it connects directly to the internet.
WLAN interface: optional Wi-Fi expansion card can be configured as either a WLAN client, which will
act as a WAN interface, or as a WLAN access point, which will act as a LAN interface.
Choosing a WAN or LAN Interface
The gateway can have only one WAN connection at a time. However the gateway can be connected to
several different LAN networks simultaneously.
In choosing the network interface, you can specify:
Manual: the network interface is selected through the embedded web interface on the Home page.
Automatic: a priority list defines which network interface to use to connect to the WAN/internet.
The network interface at the top of the list will try to connect to the WAN/internet first. If this
succeeds then the gateway continues to use this network interface to connect to the WAN/internet.
If the connection to the internet fails, the gateway tries the second interface in the priority list and
so on. The priority list is defined in the embedded web interface on the Home page.
Related Topics
Configuring the Base Unit
Ethernet Tab
3G Connection Tab
WAN/LAN switchover feature
Installing the Gateway
To install the base unit out of the box, review the installation requirements and then follow the
installation steps listed below. For information about customizing the base unit, learn about installing
expansion cards and provisioning the device with a custom developer image.
Warning: In firmware versions 1.12.0 and older, the ability to choose between automatic mode and
manual mode and to set a connection priority list are not available. These firmware versions always
try to connect to the internet over the Ethernet interface first. When this interface is not able to
connect to the internet, the gateway will try to connect to the internet via the WWAN interface.
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