Asus RT-AC88U dropping devices.

[DELTAprime]

I've had trouble with a Epson printer being connected to my WiFi network on my Asus RT-AC88U but not being visible to any PC's, Phones and Tablets and missing from the router's list of devices. I figured it was a problem with the printer since it's so old the ink has just recently been discontinued. So I bought a new Epson WiFi printer and I have the same issue with that. Plus we have a Mac Mini that never reconnects to the WiFi when coming out of sleep, I just figured it's cause it's Apple crap.

 

Now that I have seen the same issue on two printers I'm thinking it's a router issue not a problem with the printers or Mac Mini. Also it was all working fine until about 6 months ago when we started having issues and every other device on the network works fine.

 

I have tried disabling the gaming LAN Boost and disabling IPV6.

 

Anyone have any ideas of settings I can tweak?

[Levisallanon]

Do you have any static IP adresses set?
Do the other devices also connect to the wifi or are they connected to the cable?

Could you give a little explanation or picture on how your network is wired (modem from the IPS/Access point and devices and which is connected to which etc)?

[captain_to_fire]

When did you bought it? If it's recently bought, you can still return it for a replacement.

[DELTAprime]

48 minutes ago, Levisallanon said:

Do you have any static IP adresses set?
Do the other devices also connect to the wifi or are they connected to the cable?

Could you give a little explanation or picture on how your network is wired (modem from the IPS/Access point and devices and which is connected to which etc)

IP addresses are default, so some things are static others dynamic, I think both printers are static not sure about the Mac Mini.

Mix of WiFi and ethernet, my main rig and consoles are ethernet, most other devices are WiFi. About 10 WiFi devices.

The RT-AC88U is in doing DHCP and PPPoE to a ADSL modem in bridge mode, everything is handled by the RT-AC88U.

[Levisallanon]

Is it possible the printers are in another subnet?
For example your dhcp server gives IP in the 192.168.1.1-254 range with a subnet mask of 255.255.255.0 while you printer is for example 192.168.0.1 in that case they wont be able to "talk" with each other.