AiMesh (AC86U + AC68U) falls down to 2.4GHz and/or goes Offline

[jonnieZG]

I have an AC86U working as a primary router, and one AC68U connected as an AiMesh node. Firmware 3.0.0.4.384_45149 on both.

Configured separate SSIDs for 2.4GHz and 5GHz. The routers use 5GHz band for communication and signal strength between the two is in range -62 dB and -59 dB, surrounding 5GHz channels are pretty much clear, so there should be no interference with others.

Problems:

1. Ater a day or so, the connection between the two falls down to 2.4GHz and does not switch back to 5GHz until I reboot one of the routers.
2. Ocasionally the node gets marked as Offline. The computers connected to the node loose connection to Internet, but I can still SSH to the router. Again, it has to be rebooted to get the connection back.

It annoys the hell out of me. Please, does anyone have a solution?
Thanks!

• Airtime Fairness: Disabled
• Multi-User MIMO: Enabled
• Explicit/802.11ac Beamforming: Enable
• Universal Beamforming: Disable

[rcrexer]

I have an AC86U working as a primary router, and one AC68U connected as an AiMesh node. Firmware 3.0.0.4.384_45149 on both.

Configured separate SSIDs for 2.4GHz and 5GHz. The routers use 5GHz band for communication and signal strength between the two is in range -62 dB and -59 dB, surrounding 5GHz channels are pretty much clear, so there should be no interference with others.

Problems:

1. Ater a day or so, the connection between the two falls down to 2.4GHz and does not switch back to 5GHz until I reboot one of the routers.
2. Ocasionally the node gets marked as Offline. The computers connected to the node loose connection to Internet, but I can still SSH to the router. Again, it has to be rebooted to get the connection back.

It annoys the hell out of me. Please, does anyone have a solution?
Thanks!

• Airtime Fairness: Disabled
• Multi-User MIMO: Enabled
• Explicit/802.11ac Beamforming: Enable
• Universal Beamforming: Disable

I have had the same problem for about two years now. I have a 86U as my router and have tried THREE different 68U as nodes. ALL of them will go offline without about 72 hours. Sometimes they go offline within 24, 48 hours...totally random. If I reset my router and nodes, they will go back online but then repeat the same offline behavior.

Every time new firmware comes out, I am excited to try it, but alas, it fails every time. I have reached out to ASUS tech support and they were completely useless, basically telling me there is no problem on their end. I am exasperated and basically gave up about a year ago.

[MyDNA]

not sure if your router is a DSL-AC68U, if it is there's a firmware update Version 3.0.0.4.384_81140 that might fix your issue:

Webpage:
https://www.asus.com/Networking/DSLA...Desk_Download/

Direct download:
https://dlcdnets.asus.com/pub/ASUS/w...0438481140.zip

MD5 of unzipped firmware file: 33fa13b545b5c8eff24c4fdb421462e0