RT-AC88U - 2.4Ghz - DHCP failures

[CraigCarp]

I’m having issues running a second SSID to separate the 2.4 from 5Ghz. I get about 3 devices hooked up to the 2.4 SSID and then get DHCP failures — IP assignment is 169.254.x.x while the 5Ghz SSID adds more and more without issue.

I’ve run the 2.4 with WPS and WPA2 — no difference noted

Firmware is current 3.0.0.4....

I’ve pulled the power and let it sit for a couple minutes as well as cycled power on the devices which have had the DHCP failures...includes an iPad with iOS 11.

Any thoughts as to why the DHCP is failing?

 

[bbunge]

Your router IP address should be within (10.0.0.0 - 10.255.255.255, 172.16.0.0 - 172.31.255.255, 192.168.0.0 - 192.168.255.255). 192.168.50.1 is usually the default.

Sent from my P01M using Tapatalk

 

[agilani]

I’m having issues running a second SSID to separate the 2.4 from 5Ghz. I get about 3 devices hooked up to the 2.4 SSID and then get DHCP failures — IP assignment is 169.254.x.x while the 5Ghz SSID adds more and more without issue.

I’ve run the 2.4 with WPS and WPA2 — no difference noted

Firmware is current 3.0.0.4....

I’ve pulled the power and let it sit for a couple minutes as well as cycled power on the devices which have had the DHCP failures...includes an iPad with iOS 11.

Any thoughts as to why the DHCP is failing?

I had the same issue with 2.4ghz on the latest code. Ended up being wireless interference layer 2 issue. I thought it was dhcp, then arp, but ended up basically being a layer 2 wireless issue. I don't think the recent version of code checks for wireless interference correctly when doing auto channel selection or auto channel selection isn't working correctly. It didn't help that all of my amazon firestick devices were also broadcasting hidden ssid on the asus 2.4ghz channel either for their remote to work.

Possibly look at the 2.4ghz wireless channel that is being used and try 1, 6, or 11 and see if any of those channels are any better and set them manually.

I used this to look at the wireless spectrum.
https://lizardsystems.com/wi-fi-scanner/

 

[CraigCarp]

I have been running on ch 6 with 20hz set for the 2.4 channel. As part of my troubleshooting I had run with channel 7 and 11 as well — all had the same poor result....