5G Radio Not Working

RouterOS Wireless Networking
1

I bought a pair of cAP ax’s. They are both configured identically, but I noticed that nothing connects to the 5G radio on one of them. I looked in the log to see if there was anything. It shows all clients connecting to wifi2.




So far, it’s a bare-bones config:

[admin@cAPax01] > export
# 2023-11-03 12:16:55 by RouterOS 7.11.2
# software id = WU0A-I8IJ
#
# model = cAPGi-5HaxD2HaxD
# serial number = HEG08MMG27J
/interface bridge
add name=bridge1
/interface wifiwave2
set [ find default-name=wifi1 ] configuration.country="United States" .ssid=\
    JPJPOH disabled=no security.authentication-types=wpa2-psk,wpa3-psk
set [ find default-name=wifi2 ] configuration.country="United States" .ssid=\
    JPJPOH disabled=no security.authentication-types=wpa2-psk,wpa3-psk
/interface bridge port
add bridge=bridge1 interface=all
/ip dhcp-client
add interface=bridge1
/system clock
set time-zone-name=America/New_York
/system identity
set name=cAPax01
/system note
set show-at-login=no
[admin@cAPax01] >

Am I missing something? Should I return it?

2

What frequency is being used ?
Nothing in config so probably auto ?
And maybe a frequency not usable for client devices ?

Or a frequency subject to radar detection ?
Then it can take up to 10-15 minutes before it comes active.

Set your frequencies manually.
Scan the area to see what is least used.

3

I did a freq usage check:




5620 looked quiet, so I went with that. I’m not sure I set all the options correctly:


[admin@cAPax01] > export
# 2023-11-03 14:38:29 by RouterOS 7.11.2
# software id = WU0A-I8IJ
#
# model = cAPGi-5HaxD2HaxD
# serial number = HEG08MMG27J
/interface bridge
add name=bridge1
/interface wifiwave2
set [ find default-name=wifi1 ] channel.band=5ghz-ax .frequency=5620 .width=20/40/80mhz \
    configuration.country="United States" .manager=local .mode=ap .ssid=JPJPOH disabled=no \
    security.authentication-types=wpa2-psk,wpa3-psk
set [ find default-name=wifi2 ] configuration.country="United States" .ssid=JPJPOH disabled=no \
    security.authentication-types=wpa2-psk,wpa3-psk
/interface bridge port
add bridge=bridge1 interface=all
/ip dhcp-client
add interface=bridge1
/system clock
set time-zone-name=America/New_York
/system identity
set name=cAPax01
/system note
set show-at-login=no

It looks like the radio has turned according to the Android Wifi Analyzer app, but no clients are switching from 2.4 automatically. I’m going to try to restart them close to the AP and see what happens.

4

Clients are connecting to 5G when they start the connection near the AP. If they connect at further distances, they don’t switch from 2G to 5G when they get close to the AP.

Is that normal? Am I missing a setting? These are new APs and I’m trying to figure out how to set up CAPsMAN2.

5

This behaviour very much depends on clients (and almost doesn’t depend on AP).
The wifiwave2 driver enables the roaming features (802.11 r/k/v) … I guess they are on by default now. These help to improve client roaming … but it’s again up to client who has to support those extensions. Some vendors develooed some tricks to force (legacy) clients to certain band/AP, MT doesn’t implement any.

6

Completely normal. Clients “Hear the 2.4 farther away. Connect to it and never roam to the 5.” Unless they go to sleep and wake up.

So we often turn down the transmit power on the 2.4 radio to try to “help” clients find the 5 and pick it.