Hello everyone,
I am experiencing a recurring issue with a mANTBox AX 15s (running as an AP) and I would appreciate some insight.
The Problem: Randomly, all connected clients experience a sudden drop in RX rate to 6.5Mbps. When this happens, the connection becomes extremely sluggish for everyone. I've noticed that the CCQ on the client side starts to drop progressively until the stations are disconnected and forced to reconnect. After a while, the issue resolves itself without intervention.
Key Details:
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Traffic Load: This happens even when the interface is under low load (less than 5Mbps total).
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Normal Performance: When the link is stable, I can easily push over 40Mbps to a single client without issues.
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Wireless Mode: I am currently using 802.11n mode. I have tested other modes, but the behavior remains the same.
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Connected Stations: I usually have around 7 stations connected. The CPEs are a mix of legacy hardware: Ubiquiti NanoStation M5, MikroTik LHG 5, and SXT 5.
Observations: It seems like a modulation or interference issue, but it's strange that it affects all clients simultaneously and then recovers on its own. Since I am mixing WiFi 6 hardware (AX) with legacy 802.11n clients, I wonder if there is a specific setting in RouterOS v7 that I should adjust to improve compatibility or stability.
Has anyone encountered similar behavior with the mANTBox AX when serving legacy "N" clients? Are there any specific wireless/data-rate configurations or "AMPDU" settings recommended to avoid these sudden rate drops?
Thanks in advance for your help!
Here is the config
/interface bridge add name=LAN
/interface bridge add igmp-snooping=yes name="WLAN - BRIDGE"
/interface wifi set [ find default-name=wifi1 ] channel.band=2ghz-n .width=20mhz configuration.country=Superchannel .mode=ap .multicast-enhance=enabled .ssid=nauta_Hogar504B92C mac-address=F4:1E:57:3B:D5:88
/interface wifi set [ find default-name=wifi2 ] channel.band=5ghz-n .frequency=5180 .width=20mhz configuration.country=Superchannel .hide-ssid=yes .mode=ap .ssid="WIFI_HLG 5G" .tx-power=25 datapath.client-isolation=yes disabled=no
/interface ethernet set [ find default-name=ether1 ] mac-address=00:01:57:2B:D4:85
/interface ethernet set [ find default-name=sfp1 ] advertise=10M-baseT-half,10M-baseT-full,100M-baseT-half,100M-baseT-full,1G-baseT-half,1G-baseT-full,1G-baseX
/interface vlan add interface=ether1 name="vlan1002 - WIFI 5GHZ" vlan-id=1002
/ip pool add name=WIFI1 ranges=10.194.0.2-10.194.0.254
/interface bridge port add bridge=LAN interface=ether1
/interface bridge port add bridge="WLAN - BRIDGE" interface=wifi2 trusted=yes
/interface bridge port add bridge="WLAN - BRIDGE" interface="vlan1002 - WIFI 5GHZ" trusted=yes
/ipv6 settings set disable-ipv6=yes
/interface ovpn-server server add mac-address=FE:63:FD:FF:B5:60 name=ovpn-server1
/interface wifi access-list add action=accept client-isolation=yes comment=Orly disabled=no
/ip address add address=10.28.20.252/24 interface=LAN network=10.28.20.0
/ip address add address=10.194.0.1/24 interface=wifi1 network=10.194.0.0
/ip dhcp-server add add-arp=yes address-pool=WIFI1 always-broadcast=yes interface=wifi1 lease-time=3d30m name=2g
/ip dhcp-server network add address=10.194.0.0/24 dns-server=181.225.233.30,181.225.231.110 gateway=10.194.0.1 netmask=24
/ip dns set servers=1.1.1.1
/ip ipsec profile set [ find default=yes ] dpd-interval=2m dpd-maximum-failures=5
/ip route add dst-address=0.0.0.0/0 gateway=10.28.20.1
/ipv6 nd set [ find default=yes ] advertise-dns=yes
/system clock set time-zone-name=America/New_York
/tool romon set enabled=yes
The issue is with wifi2 at 5ghz, the 2.4ghz works great