Asus router randomly drops internet connection but still says "connected"

[m33ts4k0z]

Hello,

Since some days ago, my Asus RT-AC88U router randomly loses the internet connection while still saying connected and im able to access it with its local IP address. All the devices connected to the router lose internet doesnt matter if they are wired or wireless. The disconnection lasts about 1 minute and then it is back again.

I'm using the latest ASUS Merlin firmware and while I have the same provider and router for about 1.5 year, its the first problem that this happen.

I have tried to:

Power cycle the router
Reflash the firmware
Restore to factory defaults

I have many devices attached to the router (about 10-15 connected at the same time) but the RAM and the CPU usage of the router stay really low. Any ideas?

Thanks in advance

 

[degrub]

is this a DSL connection over PPOE ? Check keep alive time to ISP

 

[m33ts4k0z]

Thanks for your answer. Its a fiber 1/1 Gbps connection where I plug the ethernet cable directly in the wall and then to the router and I dont need to use credentials either.