LTE (4G) Failover setup on DrayTek router

DrayTek configuration

Setup LTE airplane mode via console

Login to DrayTek web gui and open console as per below image

Run below command on console.
wan lte set airplane on

Note – This command is not supported via telnet or ssh so you must run the command via console.

Enable LTE with failover

Go to WAN - General Setup – click on LTE

Setup LTE failover as below configuration

LTE configuration

Go to WAN – Internet Access – LTE
Select LTE access mode then click on detail page for further configuration.

Setup LTE configuration as per below image

Setup failover policy

Go to Routing – Load Balance/Route Policy and click on 1^st policy.

Setup 1^st default policy as below image

Troubleshooting and verification

Scenario 1 – Primary WAN link is active and 4G in Standby

You can verify your active link from DrayTek dashboard as describe.

Route table verification for scenario 1

Scenario 2 – LTE Failover active while DSL is down

Verify Route table for scenario 2