5
Option c. Cellular Connection
Insert your approved cellular USB modem into one of the USB ports labeled
USB 1, USB 2,
or
USB 3
on the AT&T AC8200.
The AT&T needs basic set-up of the cellular USB modem through the web interface before it can
connect to the Internet to retrieve its configuration. See the appropriate section later in the guide.
Step 2: Establish Local Network Connectivity
In most cases, your devices will attach directly to the AT&T AC8200 via one of the 8 VLAN ports via a
standard Ethernet cable. One black standard cable is provided. The Local LAN ports are all auto-
sensing, so either a straight-through or a crossover cable can be used interchangeably.
The default configuration for computers attaching to any of the AT&T AC8200 Local LAN ports is
DHCP. If you are not sure if you are using DHCP for your LAN IP addressing, please contact your
Information Services (IS) Department for assistance before proceeding.
If your computer is configured to use DHCP, but the AT&T AC8200 is not providing your computer with
an IP address, please contact your IS Department. In this case you will not be able to access the Web
Interface as described below.
Note: After the AT&T AC8200 has retrieved its configuration, the IP addresses given out on the LAN
ports are likely to change. For that reason it may be better to delay attaching any devices to the LAN
ports until AFTER configuration has been retrieved and the AT&T AC8200 reboots. If the IP addressing
does change, it may be necessary to enable/disable the Ethernet interface on attached devices to
obtain a valid IP address via DHCP.
Configuring the AT&T AC8200
In most cases, no user-level configuration is required as an IP address is retrieved automatically
through DHCP and the device configuration is retrieved from the network. In some cases it is necessary
to perform some initial configuration through the Web Interface
– for example if the primary Internet
connection needs to be manually configured prior to use.
Access the AT&T AC8200 Web Interface
The AT&T AC8200 web interface can be accessed from a computer attached to a LAN port on the
AT&T AC8200. The web interface can be used to access various administration functions and can
allow the VPN connection to be controlled.
1.
Open your browser.
2.
In the Address or Location box enter and press the
Enter
key.
3.
This will take you to one of several possible initial pages, depending on your configuration
and connectivity options. Common navigation icons appear on the upper left side of each
page for access to “Home”, “Control Panel” and “Help”
In the event that the AT&T AC8200 has already retrieved its configuration, it may have been configured
for Administrator access. See Administrator Access on page 10 for more information on gaining
administrator access to the web interface.
