Hi. I've been using Asuswrt-Merlin 380.61 on a couple of AC68U's. One is my main router and the other is configured in Repeater Mode. I have a Netgear R6300 v2 also connected to the main router via repeater mode. No problem whatsoever with this setup.
The other day I purchased a couple of AC87U's to replace my AC68U's. They had stock Asus firmware...can't remember the version. I factory reset them before the firmware upgrade. I was able to upgrade both straight to Asuswrt-Merlin 380.62. I factory reset them again after the firmware upgrade. I went ahead and configured one of them as my main router and the other one in Media Bridge mode...cuz to my surprise, there's no Repeater Mode option on the AC87U. The Netgear R6300 v2 connected fine to the main AC87U in repeater mode. No problem whatsoever with this setup.
Because of the lack of Repeater Mode on the AC87U, I decided to take the Media Bridge AC87U offline. I configured one of my AC68U's in Repeater Mode. For some reason or another, this router establishes a connection to the AC87U for a few seconds (I noticed a ping success, then drops) and then AC68U reboots. When it reboots, it cycles through the same process...connects for a few seconds, then reboots again. I went ahead and upgraded it to 380.62...did a factory reset before and after the firmware upgrade but the reboot cycle still happens after I configure it in Repeater Mode.
Anyone seen this issue before with an AC87U as main router and AC68U connected in repeater mode?
My AC68U connects to the AC87U's 5Ghz band. The AC87U's settings are the following:
Band: 5Ghz
Hide SSID: No
Channel bandwidth: 80Mhz
Control channel: 153
Extension channel: auto
Authentication method: WPA2-Personal
WPA Encryption: AES
Protection Management Frames: Disable
Group Key Retention Internal: 3600