AP8533 not setting to 40mhz with SMART-RF

[jconley]

I have a fairly large deployment of AP8533s that I have turned SMART-RF on on recently, and from what I understand, smart RF should default to using 40mhz channel widths on the 5ghz band. When I check the APs actual running state however, they are showing they are running at 20mhz:

show wireless radio on USGA-Office-2F-OA-AP3
----------------------------------------------------------------------------------------------
RADIO                RADIO-MAC             RF-MODE        STATE       CHANNEL    POWER #CLIENT
----------------------------------------------------------------------------------------------
USGA-Offi..OA-AP3:R1 94-9B-2C-2D-03-70 2.4GHz-wlan           On    11 (  smt)  5 (smt)       4
USGA-Offi..OA-AP3:R2 94-9B-2C-2D-44-30   5GHz-wlan           On    44 (  smt) 11 (smt)      13
USGA-Offi..OA-AP3:R3 94-9B-2C-2C-B0-00      sensor          Off   N/A (  smt)  0 (smt)       0
----------------------------------------------------------------------------------------------

is there an additional change I should make to the smart rf settings? or do I need to clear the smart-rf config?

[ckelly]

Do you maybe have more than 1 SmartRF Policy? (if you do, ensure that the 40MHz channel width is set on all of them).

On the AP, to confirm which SmartRF Policy is being used, you can run:

#show run | in use rf-domain

That last screenshot does confirm that the 8432 is configured to use SmartRF (Configured: smt)

What version of WiNG is running on the 8432?

[jconley]

OK, I have confirmed that 40Mhz is selected in the web UI, and I noticed that we had limited the channel selection to every other non-dfs channel, so I added all non-dfs channels back just in case the AP thought those were unavailable to it. still no 40Mhz.

I’ve checked through the assigned profile and the device overrides for the 3 APs i am testing against and they are all set to smart all the way down. However, when I query the device radios directly, they are are reporting that they are set to 20Mhz per configuration:

 CHANNEL              : Current: 157 Configured: smt Width: 20MHz
 TRANSMIT POWER       : 17 dBm
 ANTENNA USAGE        : 4x4
 MAXIMUM DATA RATES   : Phy: 481 Mbps User: 361 Mbps
 PHY SETTINGS         : Short Preamble: N Dual Channel: N Spectrum Mgmt: N
 RATE SELECTION       : Standard
 ANTENNA DOWNTILT     : Not-Supported
 RADIO SHARE MODE     : Off
 TRANSMIT BEAMFORMING : Enabled
 MU-MIMO              : Disabled
 SCAN_AHEAD CHANNEL   : -
 ERP COEXISTENCE      : ERP Protection: N Non-ERP detected: N Non-ERP associated: N
 HT COEXISTENCE       : HT Protection: nonmember mode, Non-HT detected: Y
 Current Channel Width: 20Mhz, reason: per configuration
 Num of Mcast Streams : 0 (max:25)
 Multicast streams    :
 # MP Mcast Streams   : 0

I’m at a loss as to where this configuration is coming from. I’d like to avoid manually setting the channel assignments, as eventually I will roll this config out to 77 APs.

[ckelly]

jconley,

To force a channel width, you would need to make that configuration in the SmartRF policy.

Check your SmartRF policy to see how these settings are configured.

If the 5GHz radio is in fact configured for 40MHz channels in the SmartRF policy, then I would next look in the AP Profile to see if there are any overrides.

In the CLI:

VX9K-WING7(config-smart-rf-policy-LAB-SMARTRF)*#channel-width 5GHz ?
  20MHz  Assign 20MHz channel width
  40MHz  Assign 40MHz channel width
  80MHz  Assign 80MHz channel width
  auto   Assign best possible channel in 20/40/80MHz width

In the GUI: