Example: Use A Ping Test For Wan Failover From Ethernet To Cellular - Digi Connect IT 4 User Manual

Interfaces
6. Save the configuration and apply the change:
(config network interface my_wan ipv4 surelink)> save
Configuration saved.
>
7. Type exit to exit the Admin CLI.
Depending on your device configuration, you may be presented with an Access selection
menu. Type quit to disconnect from the device.

Example: Use a ping test for WAN failover from Ethernet to cellular

In this example configuration, the WAN interface serves as the primary WAN, while the cellular Modem
interface serves as the backup WAN.
In this example configuration, SureLink is used over for the WAN interface to send a probe packet of
size 256 bytes to the IP host 43.66.93.111 every 10 seconds. If there are three consecutive failed
responses, the default Update Routing recovery action will increase the metric for the WAN interface
by 100, which will cause the Connect IT 4 device to start using the Modem interface as the default
route. It continues to regularly test the connection to WAN, and when tests on WAN succeed, the
device falls back to that interface.
To achieve this WAN failover from the WAN to the Modem interface, the WAN failover configuration is:

Web
1. Log into Digi Remote Manager, or log into the local Web UI as a user with full Admin access
rights.
2. Access the device configuration:
Remote Manager:
a. Locate your device as described in
device.
b. Click the Device ID.
c. Click Settings.
d. Click to expand Config.
Local Web UI:
a. On the menu, click System. Under Configuration, click Device Configuration.
The Configuration window is displayed.
Digi Connect IT® 4 User Guide
up: The test will pass only if the referenced interface is up and passing its
o
own SureLink tests (if applicable).
down: The test will pass only if the referenced interface is down or failing its
o
own SureLink tests (if applicable).
Use Digi Remote Manager to view and manage your
Wide Area Networks (WANs)
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