All right, It work great now! Thank you for helping me.

Thank you for the answer. I changed the Archer C7 IP to 192.168.0.2 but T1600G-28TS is still invisible in the network. I tried to remove the T1600G-28TS from the network but I cannot access it...

Hello guys, This is my first post and I'm pretty new to the wolrd of networking. I don't know if this subject is in an other topics but I did not find one. Also, english isn't my first language but...