Example: Use A Ping Test For Wan Failover From Ethernet To Cellular - Digi TX40 User Manual

Interfaces

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
WWAN1 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 TX40 device to start using the WWAN1 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 WWAN1 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.
TX40 User Guide
Use Digi Remote Manager to view and manage your
Wide Area Networks (WANs)
115