Model :

Hardware Version :

Firmware Version :

ISP :

Hello everybody !

I have another problem yet, with link backup now...

I try to configure Link Backup on a router TL-ER5120...
I would like to when connection on WAN1 failed, WAN2 replace WAN1 !

I have searched on internet and forum, but I don't find the solution.

Here you can see the installation :





In a normal mode, the traffic is on WAN1 -> it's ok.

Now here is my configuration for link backup :





for online detection WAN 1 :




for online detection WAN 2 :




and for load balancing (I desactivate all... I don't want do use it) :




It works fine when I play with option connect/disconnect from WAN1&2 parameters.
Or if I physically connect/disconnect WAN 1 or 2

BUT :

if I lose the connection on the WAN 1, I want to say :

now the router doesn't switch on the port WAN 2.

I can see in the "Online detection" menu that WAN1 is well offline (and WAN 2 is online)
But I can't access internet.
If I go on the WAN 1 parameters and I click on disconnect button, so WAN 2 take the connection and I access internet.

I try to play with DNS off WAN ports, with parameters in online detection menu (specify IP or DNS lookup), but nothing works.

I despair, I don't understand why if I disconnect manually WAN 1 (with cable or with button in WAN parameters) it works !!!
And not automatically ????!!!!!

I hop you have an idea !!!

Thanks very much for your help !!!