Wireless Access

I'm trying to figure out why a bunch of our APs are broadcasting on 5GHz channels that are not configured as part of our regulatory domain profile (DFS channels).  I had this issue in the past and it was found that having the 80MHz box checked in the High-throuput SSID profile was the culprit, but I'm still having this issue even though that is disabled.

This is causing some older clients not to see the 5GHz APs and is creating coverage holes.

ArubaOS Version 6.4.3.6 on a 7240 controller

(wmc) #show ap regulatory-domain-profile 802.11ac-20mhz

Regulatory Domain profile "802.11ac-20mhz"
------------------------------------------
Parameter                          Value
---------                          -----
Country Code                       CA
Valid 802.11g channel              1
Valid 802.11g channel              6
Valid 802.11g channel              11
Valid 802.11a channel              36
Valid 802.11a channel              40
Valid 802.11a channel              44
Valid 802.11a channel              48
Valid 802.11a channel              52
Valid 802.11a channel              56
Valid 802.11a channel              60
Valid 802.11a channel              64
Valid 802.11a channel              149
Valid 802.11a channel              153
Valid 802.11a channel              157
Valid 802.11a channel              161
Valid 802.11a channel              165
Valid 802.11g 40MHz channel pair   N/A
Valid 802.11a 40MHz channel pair   N/A
Valid 802.11a 80MHz channel group  N/A

Example of a few APs:

Active AP Table
---------------
Name               Group             IP Address      11a Clients  11a Ch/EIRP/MaxEIRP    AP Type  Flags  Uptime
----               -----             ----------      -----------  -------------------    -------  -----  ------
bronfman-1-ap72    bronfman          172.24.132.33   0            AP:HT:100+/22/22       105      da     6d:7h:53m:27s
bronfman-1-ap53    bronfman          172.24.134.45   0            AP:VHT:140+/22.5/22.5  225      Ada    1d:6h:32m:52s
bronfman-ss1-ap56  bronfman          172.24.134.16   0            AP:HT:100+/22/22       105      da     6d:8h:13m:20s
bronfman-1-ap48    bronfman          172.24.132.27   0            AP:HT:108+/22/22       105      da     6d:7h:56m:26s
bronfman-5-ap83    bronfman          172.24.134.8    2            AP:VHT:108+/24/24      205      da     6d:8h:12m:57s
bronfman-2-ap41    bronfman          172.24.134.26   1            AP:HT:100+/22/22       105      da     6d:7h:42m:28s
bronfman-3-ap35    bronfman          172.24.134.29   0            AP:HT:132+/22/22       105      da     6d:7h:34m:59s

Would need the full config, but make sure your AP group is using the '802.11ac-20Mhz' regulatory profile as part of the AP system profile and NOT using the default (you may have created the regulatory profile but ARM/AP system is not using it). 

Yes, it is using this regulatory domain profile. I have been over all the details of the ap-group config and everything is how it should be.  Even if I put the config in 802.11n mode (disable 802.11ac) they APs are still on channels outside what I have specified!

@jhoward wrote:

Would need the full config, but make sure your AP group is using the '802.11ac-20Mhz' regulatory profile as part of the AP system profile and NOT using the default (you may have created the regulatory profile but ARM/AP system is not using it). 

---

Ok I think I fixed it... In my ARM profile I changed this:

rf arm-profile "arm-profile-5Ghz"
  40MHz-allowed-bands "a-only"

to this:

rf arm-profile "arm-profile-5Ghz"
  40MHz-allowed-bands "None"

and all the APs changed channels into the right channels!

Did you have a TAC case open for this? If so, what was the number? It may need to be replicated in case it's a bug. What version of code are you on now as well?

No, I don't have a TAC case open on this.

(wmc) # show ver
Aruba Operating System Software.
ArubaOS (MODEL: Aruba7240), Version 6.4.3.6
Website: http://www.arubanetworks.com
Copyright (c) 2002-2015, Aruba Networks, Inc.
Compiled on 2015-12-11 at 16:40:20 PST (build 52927) by p4build

jhoward wrote:

Did you have a TAC case open for this? If so, what was the number? It may need to be replicated in case it's a bug. What version of code are you on now as well?

Thanks MZAC, I will look in to this.

I just wanted to share that I just had this same exact behavior on 6.5.3.6. I created a new regulatory profile but the APs were still using channels that I had disabled in the new profile. It wasn't until I changed the "allowed bands for 40 MHz channels" to "none" that the APs changed channels.