User guide

Rev 2.0 C Aug.10 39
5
5: LAN/WiFi Configuration
• Addressing
• Host Port Routing
• Wi-Fi devices
• USB
• Global DNS
• PPPOE
The LAN tab that displays in ACEmanager, is applicable across all
Sierra Wireless AirLink devices.
The primary purpose of the AirLink device is to route data from one
or more devices connected to one or more of the ports to the cellular
network and, ultimately, under most circumstances, to the Internet.
Public and Private Mode
To support some legacy installations, the AirLink device has the
ability to act as a one-to-one gateway giving the cellular network
granted IP address directly, to a connected device. This is Public
mode.
Since the one-to-one gateway configuration will not allow the
flexibility of a LAN environment where several devices can connect to
the AirLink device, Private Mode provides a NAT environment with an
optional DHCP server.
Tip: When using Public mode, Sierra Wireless recommends connecting the
device directly to the computer or other end device. Using a hub or switch
may prevent the AirLink device from updating the IP address of the end
device when an IP address is received from the cellular network.
In ACEmanager, the Host Public mode and DHCP settings are part of
the LAN tab. The DHCP addresses for USB/net are on LAN > USB
page, the DHCP addresses for the serial PPP are on the PPPoE
page, and the DHCP addresses for the WiFi, as applicable, are on
the WiFi page.
Addressing
This section governs Ethernet port connections and the Public/
Private mode of all ports. Changing settings in this area requires a
reboot of the AirLink device after applying any changes.