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John1028
New Member
October 15, 2024
Question

FP231G Dual 5g: clients only connecting to radio 2

  • October 15, 2024
  • 3 replies
  • 4203 views

I'm having an issue with Dual 5g mode on my FP231G APs.

 

Radio 1 is off

Radio 2 is the low 5g channels

Radio 3 is the high 5g channels

 

Dense deployment (it's a school and every classroom has an AP)

 

The issue is all clients are only connecting to radio 2.  Radio 3 is propagating, I can see it with the fluke WIFI scanner.  DAARP is working, the client experience is pretty good except I'm getting some very high channel utilization numbers due to the fact that the clients are all connected to just 4 channels on radio 2.

 

I made a new connection profile with single radio 5g and that's working great, all the channels are utilized and my channel utilization issues are gone or very minimal.

 

I made a test profile with dual 5g enabled, radios 1 and 2 off, and clients connect to radio 3 without a problem.

 

My questions are:

  • Is there a way in the config to encourage clients to connect to radio 3 when using dual 5g mode? 
  • Is this likely just a client issue and they are choosing the lower frequencies for reasons I can't do anything about?
  • Do I have something goofy in my config that is preventing radio 3 from being used?

Thank you!

 

config radio-2
set band 802.11ax-5G
set band-5g-type 5g-low
set channel-bonding 40MHz
set power-mode dBm
set power-value 7
set wids-profile "default"
set darrp enable
set arrp-profile "arrp-default"
set vap-all manual
set vaps xxxxx
set channel "36" "44" "52" "60"
end
config radio-3
set band 802.11ax-5G
set band-5g-type 5g-high
set channel-bonding 40MHz
set power-mode dBm
set power-value 7
set wids-profile "default"
set darrp enable
set arrp-profile "arrp-default"
set vap-all manual
set vaps xxxx

set channel "100" "108" "116" "124" "132" "140" "157"

3 replies

ebilcari
Staff
Staff
October 16, 2024

If you disable the other radios do you see the devices connected to these channels '"100" "108" "116" "124" "132" "140" "157"'?

These channels are added later and some of the devices may not like them.

Emirjon
John1028
John1028Author
New Member
October 16, 2024

Yes, the clients connect to the upper channels without any problem if use single 5G mode or if I use dual 5G mode and disable radio 2.

ebilcari
Staff
Staff
October 17, 2024

What is the firmware version of the AP?

Have you checked the PoE budget of the switch? Maybe it's a power limitation, you can check the power details also from within the AP:
# cw_diag power

 

You can also try to avoid using the Radar channels [116-128] since they have a fallback mechanism and maybe there is a tower nearby.

What is the maximum number of the devices that have you seen connected only on radio 2?

Emirjon
FnUser
New Member
October 24, 2024

Try on AP:

 

cw_diag power full

cfg -c

FnUser
New Member
October 24, 2024

it has resolved a problem for me, R1 2.4Ghz, R2 5Ghz, R3 5Ghz are working

John1028
John1028Author
New Member
January 15, 2025

My solution to this was to adjust the power on radio 3.

Although both radio 2 and 3 were both set to the same level (7dbm), the signal level to the client was much lower on radio 3.

 

Currently radio 2 is set to 7dbm and radio 3 is set to 12bm.  This results in approximately equal signal to the client and we are now getting an equal split of clients on both radios.