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Interfaces
Wide Area Networks (WANs) and Wireless Wide Area Networks
(WWANs)
A Wide Area Network (WAN) provides connectivity to the internet or a remote network. A WAN
configuration consists of the following:
A physical device, such as an Ethernet device or a cellular modem.
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Several networking parameters for the WAN, such as firewall configuration and IPv4 and IPv6
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support.
Several parameters controlling failover.
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Configure WAN/WWAN priority and default route metrics
The Connect IT Mini device is preconfigured with one Wide Area Network (WAN), named ETH, and one
Wireless Wide Area Network (WWAN), named Modem. You can also create additional WANs and
WWANs.
When a WAN is initialized, the Connect IT Mini device automatically adds a default IP route for the
WAN. The priority of the WAN is based on the metric of the default route, as configured in the WAN's
IPv4 and IPv6 metric settings.
Assigning priority to WANs
By default, the Connect IT Mini device's WAN (ETH) is configured with the lowest metric (1), and is
therefor the highest priority WAN. By default, the Wireless WAN (Modem) is configured with a metric of
3, which means it has a lower priority than ETH. You can assign priority to WANs based on the behavior
you want to implement for primary and backup WAN interfaces. For example, if you want a cellular
connection to be your primary WAN, with an Ethernet interface as backup, configure the metric of the
WWAN to be lower than the metric of the WAN.
Example: Configure cellular connection as the primary WAN, and the Ethernet
connection as backup
Required configuration items
Configured WAN and WWAN interfaces. This example uses the preconfigured ETH and Modem
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interfaces.
The metric for each WAN.
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Digi Connect IT® Mini User Guide
Wide Area Networks (WANs)
42
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