Hi, My case is solved. The issue was my ethernet cable. It was defect. Thanks for your reply. Have a good day. Best regards

Bonjour, J'ai acheté 3x Deco X20, mais j'en utilise que 2. Les 2 sont configuré en access point. Ils sont connectés en backhaul ==> Router ==> Deco_no1 ==> Deco_no2. Je les ai installé ce matin (16...