Wifiwave2 CAPSMAN channel selection

RouterOS Wireless Networking
1

Hi,

I can’t understand how the channel selection works in Wifiwave2 CAPSMAN…

I’ve setup a site with 12 CapAX controlled by a RB5009 Wifiwave2 CAPSMAN controller, every device has 7.11rc1 ros/firmware and controller has the config:

/interface wifiwave2 channel
add band=2ghz-ax disabled=no frequency=2412,2437,2462 name=channel_2.4_ax width=20mhz
add band=5ghz-ax disabled=no frequency=5200 name=channel_5ghz_ax width=20/40mhz
/interface wifiwave2 datapath
add bridge=lan disabled=no name=vlan100_hotspot vlan-id=100
/interface wifiwave2 security
add authentication-types=wpa2-psk,wpa3-psk disabled=no name=sec1
/interface wifiwave2 configuration
add channel=channel_2.4_ax country=France datapath=vlan100_hotspot datapath.client-isolation=no disabled=no mode=ap name=socoloc_2ghz security=sec1 security.ft=yes ssid=socoloc
add channel=channel_5ghz_ax country=France datapath=vlan100_hotspot disabled=no name=socoloc_5ghz security=sec1 security.ft=yes ssid=socoloc
/interface wifiwave2 access-list
add action=accept allow-signal-out-of-range=1m disabled=no interface=any signal-range=-80..0
add action=reject allow-signal-out-of-range=1s disabled=no interface=any signal-range=-120..-80 ssid-regexp=""
/interface wifiwave2 capsman
set ca-certificate=auto certificate=auto enabled=yes interfaces=lan package-path="" require-peer-certificate=no upgrade-policy=none
/interface wifiwave2 provisioning
add action=create-dynamic-enabled disabled=no master-configuration=socoloc_5ghz name-format=%I_5Ghz slave-configurations="" supported-bands=5ghz-ax
add action=create-dynamic-enabled disabled=no master-configuration=socoloc_2ghz name-format=%I_2Ghz supported-bands=2ghz-ax

Almost all AP take the 2412 frequency, except one or two picking the 2437 or 2462, even CapAX which are a few meters away and in sight.
When I do a frequency usage scan on most of the AP, I can see that 2412 is the most busy channel, and I can see after stopping the scan the “channel reselection”, but I still pick 2412 while 2437 or 2462 would have been the most obvious choice (less networks #, less busy…).

How do this channel selection works in Wifiwave2 CAPSMAN? And is there a way to do a static channel planning without creating multiple provisioning rules?

Thanks

2

I define al possible combinations which can be used and then I use specific provision rules based on radio mac.
So I decide which channel gets used where.

I rarely leave channel selection (even for single access points) to auto.

3

Thanks, could you please share a config example?

4

On vacation.
Will see when I fire up my laptop later this weekend so I can connect to work.

5

This week we did some testing with wave2. Whet the ap is booted (or disable the wifi-int) it seems to pick a good frequency. So, in a noisy environment we have do do some scripting to reboot the ap at night in a defined order to get some auto-frequency picking.

6

This will only work if there are no other wifi with strong signals beside your installation (like urban environment)

7

Correct but still you will have more control over what is happening.
With auto you never know.

8

At the moment my problem is that wifi with wave 2 and CAP AX and HAP AX2 is very unstable. With 7.11 it shows periodically “hardware reset” DFS scanning after this. With 7.12beta1 the resets are gone but wifi is not stable