MU-MIMO is not working on AP840-I(V2) and AP880-AR (RG-WS6512)

Dear Wireless Experts!
I have problems with enabling MU-MIMO on AP840-I(V2) and AP880-AR access points (in fit mode under control from RG-WS6512): parameter "MU Beamformer Capable" in BEACON always shows as "not supported" from both APs regardless of "mu-mimo" configuration under ap-config section:


Could you, please, help me with enabling this feature.
Controller configuration is posted below.
Best regards,
Alexey
Configuration:

ruijie-wlc-01#show ap-config summary
========= show ap status =========
Radio: Radio ID or Band: 2.4G = 1#, 5G = 2#
       E = enabled, D = disabled, N = Not exist, V = Virtual AP
       Current Sta number
       Channel: * = Global
       Power Level = Percent

Online AP number: 4
Offline AP number: 0

AP Name                                  IP Address      Mac Address    Radio               Radio               Up/Off time   State
---------------------------------------- --------------- -------------- ------------------- ------------------- ------------- -----
RG-840-3b40-Home                         192.168.254.111 28d0.f5ed.3b40 1  D   0    6*    1 2  E   0   56     1    0:00:32:34 Run   
RG-840-3bd9-Home-2                       192.168.254.112 28d0.f5ed.3bd9 1  D   0    1*    1 2  D   0   36     1    0:04:39:15 Run   
RG880-5bba-r400                          192.168.104.2   d431.277d.5bba 1  E   0    1   100 2  E   0  149   100   19:21:16:23 Run   
                                                                        3  E   0   36   100 4  E   0  149*  100                     
RG880-5d34-EndCor                        192.168.104.1   d431.277d.5d34 1  E   0   11   100 2  E   0  157   100   19:21:16:32 Run   
                                                                        3  E   0   44   100 4  E   0  149*  100                     
ruijie-wlc-01#



ruijie-wlc-01#show ap-config running

Building configuration...
Current configuration: 1670 bytes

!
ap-config RG-840-3b40-Home
credential admin Ocsic-321
ap-mac 28d0.f5ed.3b40
ap-group HOME-AP-Group
sta-limit 512 radio 2
mu-mimo enable radio 2
txbf enable radio 2
country RU  radio 1
country RU  radio 2
no enable-radio 1
power local 1 radio 1
power local 1 radio 2
11acsupport enable radio 2
11axsupport enable radio 2
channel 56 radio 2
chan-width 20 radio 2
!
ap-config RG-840-3bd9-Home-2
credential admin Ocsic-321
ap-mac 28d0.f5ed.3bd9
ap-group HOME-AP-Group
no fair-schedule
country RU  radio 1
country RU  radio 2
no enable-radio 1
no enable-radio 2
power local 1 radio 1
power local 1 radio 2
channel 36 radio 2
chan-width 20 radio 2
!
ap-config RG880-5bba-r400
ap-mac d431.277d.5bba
ap-group HOME-AP-Group
wired-interface port 1 enable
mu-mimo enable radio 2
mu-mimo enable radio 3
no mu-mimo enable radio 4
txbf enable radio 2
txbf enable radio 3
no txbf enable radio 4
power local 100 radio 1
power local 100 radio 2
power local 100 radio 3
11acsupport enable radio 2
11acsupport enable radio 3
no 11acsupport enable radio 4
channel 1 radio 1
channel 149 radio 2
channel 36 radio 3
chan-width 20 radio 1
chan-width 20 radio 2
chan-width 40 radio 3
device mode monitor radio 4
!
ruijie-wlc-01#sh running-config | b ac-control
ac-controller
sta-behaviour ip-check delay 20
sta-behaviour ip-check sulk 40
sta-blacklist enable
sta-blacklist lifetime 60
sta-blacklist detect-time 10
capwap ctrl-ip 192.168.200.51
active-bin-file AP_RGOS11.9(6)W3B1_S2X4-11_11160201_install.bin
active-bin-file AP_RGOS11.9(6)W3B1_S2X4-06_11160202_install.bin
ap-image auto-upgrade
no ac-control disable
country CN
country RU
802.11g network rate 1 disabled
802.11g network rate 2 disabled
802.11g network rate 5 disabled
802.11g network rate 6 supported
802.11g network rate 9 supported
802.11g network rate 11 mandatory
802.11g network rate 12 supported
802.11g network rate 18 supported
802.11g network rate 24 supported
802.11g network rate 36 supported
802.11g network rate 48 supported
802.11g network rate 54 supported
802.11b network rate 1 disabled
802.11b network rate 2 disabled
802.11b network rate 5 disabled
802.11b network rate 11 mandatory
802.11a network rate 6 mandatory
802.11a network rate 9 supported
802.11a network rate 12 mandatory
802.11a network rate 18 supported
802.11a network rate 24 mandatory
802.11a network rate 36 supported
802.11a network rate 48 supported
802.11a network rate 54 supported

ruijie-wlc-01#sh running-config

Building configuration...
Current configuration: 8919 bytes

version AC_RGOS 11.9(6)W3B1, Release(11160201)
hostname ruijie-wlc-01
!
wlan-config 10 wpa2-3-rg-test
ssid-code utf-8
tunnel local
!
ap-group HOME-AP-Group
interface-mapping 10 group 3 ap-wlan-id 1
mu-mimo enable radio 2
mu-mimo enable radio 3
!

Hi sir,

we will answer you via registered email about your question. Please pay attention~

GTAC-Sophia replied at 2024-6-4 10:09
Hi sir,

we will answer you via registered email about your question. Please pay attention~

Thank you Sophia.
Didn't get anything yet... Why you won't to post an answer here?

Regards,
Alexey