802.11s Mesh Backhaul Stability Between Multiple HaLowLink 2 APs

General
1

Hello Morse Micro Community,

We are working with three HaLowLink 2 APs, each using the Morse Micro MM8108-B2 802.11ah (S1G) radio.

Our testcase requires a stable 802.11s mesh backhaul. One AP is configured as the mesh root, and the other APs are paired with it using the AP → Extender pairing procedure.

Current configuration: -

Device: Morse Micro HaLowLink 2
Firmware: 2.11.13
OpenWrt : 23.05.6
Linux Kernel: 5.15.189
Wireless: S1G / IEEE 802.11ah
Number of APs: 3
Backhaul: IEEE 802.11s mesh

During long-duration testing, we observe intermittent mesh disconnections and loss of synchronization between APs. Long-term mesh stability is critical for our testcase.

Could you please advise:

  1. Recommended parameters/configuration for improving 802.11s mesh stability?
  2. Any known MM8108-B2 limitations causing intermittent peer disconnections?
  3. Is there a firmware update or patch addressing mesh stability?
  4. What is the recommended method to monitor/debug mesh peer stability and identify the cause of disconnections?

Our goal is to maintain a persistent and reliable mesh backhaul between all three APs during extended testing.

Any guidance would be appreciated. Thank you.
++ @ajudge

2

Hey @Chaitanya

It would be helpful to get some logs out to understand the cause of the disconnections.

In /etc/config/wireless can you add option debug_mask '0xf' to enable more verbosity in the driver logs, and enable verbose supplicant logs with option log_level '1'. Hopefully this will give as an indication for why you are seeing disconnections.

You may also want to periodically log morse_cli -i wlan0 stats, which will help us get a sense of any interference in your environment.