Example: Use A Ping Test For Wan Failover From Ethernet To Cellular - Digi LR54 User Manual

Interfaces
4. Determine the index number of the target:
(config network interface my_wan)> show ipv4 surelink target
0
interface_down_time 600s
interface_timeout 120s
test interface_up
1
test dns_configured
(config network interface my_wan)>
5. Delete the target:
(config network interface my_wan> del ipv4 surelink target 1
(config network interface my_wan)>
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 WAN1 interface serves as the primary WAN, while the cellular
WWAN interface serves as the backup WAN.
In this example configuration, SureLink is used over for the WAN1 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 LR54 device brings the WAN1 interface down and starts using the WWAN interface. It
continues to regularly test the connection to WAN1, and when tests on WAN1 succeed, the device falls
back to ETH1.
To achieve this WAN failover from the WAN1 to the WWAN 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:
LR54 User Guide
Wide Area Networks (WANs)
99