Is there a reliable way to read TX power in ArubaOS 8 ? When we moved
to in-room
APs I set them on a profile with moderate 5GHz power and absolute
minimum 2.4GHz, but
this year I'm seeing the same MacOS/iOS issues as others and in trying
some older CLI
commands, it appears that maybe my settings are not what I would expect?
Does the below indicate that the min 2.4GHz EIRP for this hardware
(AP-303H) is 7.0 (6.2)
and my attempts at forcing it between 3-6 is futile?
-----
MD%show ap debug driver-log ap-name AP-NAME | include EIRP
127 17444000.666666 Radio0: User EIRP 18.0 Actual EIRP 18.0 Max EIRP
28.6 Min EIRP 7.6
128 17517190.778855 Radio1: User EIRP 7.0 Actual EIRP 7.0 Max EIRP
22.1 Min EIRP 6.2
-----
rf dot11g-radio-profile "inroom_radio_g_ui"
no high-efficiency-enable
am-scan-profile "inroom_radio_g_ui_amscan_g_ui"
eirp-min 3
eirp-max 6
!
rf dot11a-radio-profile "inroom_radio_a_ui"
no high-efficiency-enable
smart-antenna
am-scan-profile "inroom_radio_a_ui_amscan_a_ui"
max-channel-bandwidth 40MHz
eirp-min 15
eirp-max 18
On 10/14/20 9:05 AM, McGuire, Michael wrote:
I was so happy to come across this thread last night. As I started
reading through the descriptions of what others are experiencing I
began to realize maybe I'm not crazy (maybe).
We're an Aruba shop and have been struggling with the same reports of
poor performance in the residence halls for the past 2-3 weeks.
Last week the pattern finally began to emerge that most clients having
issues are MacOS & iOS, which seem to be hanging onto the 2.4GHz radio.
Even in locations where the student is in the same room (our residence
halls are APs in every suite common area or every other room in
traditional halls) they were still on the 2.4GHz radio.
AirWave would show the client's health fluctuating from near 100% to
30% and constant gaps in Usage data within the 2 hour window. The SSID
had a "Too Many Frame Errors/sec" of over 2,000 frames/s.
I've been making some head way by increasing the max for 5GHz
slightly, while severely limiting max power on the 2.4 GHz.
This seems to be getting most clients (not all) to move to the 5GHz
radio where they are showing MUCH better stats.
As these are Residence Halls and given the current pandemic, going
room to room to take measurements in these locations is not feasible.
- Michael
Michael McGuire
/Network Systems Administrator/
/Monmouth University/
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/732.263.5589/
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*From:*The EDUCAUSE Wireless Issues Community Group Listserv
[mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] *On Behalf Of *Mallon, Jason
*Sent:* Friday, October 9, 2020 18:01
*To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
*Subject:* [External] Re: [WIRELESS-LAN] Client roaming
Thanks for all the responses on this.
Thanks,
*Jason Mallon*| Network Engineer III
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OIT
The University of Alabama
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<mailto:jemal...@ua.edu>
/var/folders/h2/r448cc4j4_v70yns10brx6r00000gq/T/com.microsoft.Outlook/Content.MSO/8434B70B.tmp
*From: *The EDUCAUSE Wireless Issues Community Group Listserv
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
*Date: *Friday, October 9, 2020 at 4:13 PM
*To: *WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>>
*Subject: *[EXTERNAL] Re: [WIRELESS-LAN] Client roaming
Thanks for the links Mike. I’ve seen some of these before, but not
all of them. They’re definitely worth checking out.
*From:*The EDUCAUSE Wireless Issues Community Group Listserv
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> *On Behalf Of *Mike Atkins
*Sent:* Friday, October 9, 2020 4:33 PM
*To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
*Subject:* Re: [WIRELESS-LAN] Client roaming
While this is not an Apple specific thread, Dan Jones’ presentation at
Wireless Technology Forum on “Designing Wireless Networks for Apple”
was very entertaining/helpful in explaining the Apple roaming docs he
referenced. Several pointed out documented vs observed behaviors are
not always the same. Pertinent to this thread, the need for MacOS to
see an AP at 12 dB better than the existing connection before 5GHz
roaming could be a factor. Probably not the issue at hand, but some
things to consider in the docs.
You should watch the presentation at WTF20.COM
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or when it is posted to the CWNP YouTube channel
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Here are the references from @UKDanJones presentation:
https://apple.co/3l4xqvs
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Apple Recommended AP Settings
https://apple.co/3ngM5FR
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Creating Network Names For Your Wi-Fi Networks
https://apple.co/3jmbLhF
<https://nam11.safelinks.protection.outlook.com/?url=http%3A%2F%2Fsupport.apple.com%2Fen-us%2FHT203068&data=02%7C01%7Cjemallon%40ua.edu%7C838c8185582e40d94e7408d86c9803d0%7C2a00728ef0d040b4a4e8ce433f3fbca7%7C0%7C0%7C637378747867994504&sdata=nEMcC7x4qlDJf3OJ3%2FvIEVdrdLpHb%2FuaHRd38hon%2FPQ%3D&reserved=0> -
About Wireless Roaming For Enterprise
https://apple.co/2SdQA5F
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macOS Wireless Roaming For Enterprise Customers
https://apple.co/2HFn8TU
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Wi-Fi network roaming with 802.11k, 802.11r, and 802.11v on iOS
https://bit.ly/3iLFG2K
<https://nam11.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.cisco.com%2Fc%2Fdam%2Fen%2Fus%2Ftd%2Fdocs%2Fwireless%2Fcontroller%2Ftechnotes%2F8-6%2FEnterprise_Best_Practices_for_iOS_devices_and_Mac_computers_on_Cisco_Wireless_LAN.pdf&data=02%7C01%7Cjemallon%40ua.edu%7C838c8185582e40d94e7408d86c9803d0%7C2a00728ef0d040b4a4e8ce433f3fbca7%7C0%7C0%7C637378747868004490&sdata=JeQQg2j%2FHVbNwzepICE8aoi95j23%2BtEm33FC%2FQgwFko%3D&reserved=0> -
Enterprise Best Practices for iOS devices and Mac computers on Cisco
Wireless LAN
https://apple.co/36msKwC
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Use private Wi-Fi addresses in iOS 14, iPadOS 14, and watchOS 7
https://apple.co/2GjOYVr
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Connecting Apple devices to 802.1X networks
https://apple.co/3cLBa1Z
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Build Trust Through Better Privacy
https://bit.ly/2SgyQXb
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You Should Care About DHCP Option 51
https://apple.co/3jnEDWR
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How To Modernize Your Captive Network//
Maybe it is just us, but we have lots of places where a 12dB delta is
hard to achieve when designing for dual 5G radio coverage at -65 dB.
Clients end up skipping an AP (or two) before actually roaming. Not
to mention use case and behavior differences between laptops and
mobile devices like phones and tablets. You might notice on a laptop
Zoom session, maybe not with an iPhone VoWi-Fi session. Our focus was
on VoWi-Fi, thinking it was the more challenging thing to tackle.
Remote learning is challenging those assumptions.
*/Mike Atkins /*
Network Engineer
Office of Information Technology
University of Notre Dame
*From:*The EDUCAUSE Wireless Issues Community Group Listserv
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> *On Behalf Of *Jake Snyder
*Sent:* Friday, October 9, 2020 3:33 PM
*To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
*Subject:* Re: [WIRELESS-LAN] Client roaming
On thing to keep in mind is that iOS devices start behavior poorly
when they have no good option above -65. That’s the threshold they
prefer 5GHz and when you combine that with “hallway design” and “band
select” you are asking for a bad time.
Scenario:
Client doesn’t see 5GHz above -65. 2.4Ghz looks better, client tries
to associate and bandselect tries to send them back. Client doesn’t
think 5GHz meets its requirements, tries to associate on 2.4Ghz. Round
and round they go.
If you need band select for devices like iOS that prefer 5GHz, you
likely don’t have enough 5GHz coverage, and trying to force them to
5GHz only results in issues.
A better approach is to have at least 6db of transmit power more on
5GHz than 2.4. This makes 5GHz generally look more attractive so
clients naturally pick it, band select not needed. You can easily do
this with TPC min/max settings.
Also keep in mind when looking at your survey reports. -65 is as
measured by the device, not your fancy sidekick or aircheck. Figure
you need an extra 7-10db delta to overcome the limitations of some
mobiles devices. That puts you -58 to -55 as measured.
Sent from my iPhone
On Oct 9, 2020, at 1:08 PM, James Helzerman <jarh...@umich.edu
<mailto:jarh...@umich.edu>> wrote:
Best thing you can do for clients is have a 5GHz only SSID. We
moved over the summer to this with our main 802.1x network and it
has fixed a ton of these roaming issues and complaints of
performance. Basically take the decision making out of the hands
of the client, give them only one band to choose from. Band
Select / steering may work but can lead to a lot of users issues
as roaming can break if the client doesnt take the hint to use
5GHz. Transitions with real time applications like voice can be
negatively affected.
For those on our campus that have 2.4GHz only devices, we offer
eduroam in both bands and have them use that then use AAA override
to place them in the same network as our branded ssid giving them
all the same access to resources. Our branded 802.1x, MWireless,
has 95% of our user devices.
-Jimmy
--
James Helzerman
Wireless Network Engineer
University of Michigan - ITS
On Fri, Oct 9, 2020 at 12:03 PM Enfield, Chuck <cae...@psu.edu
<mailto:cae...@psu.edu>> wrote:
FWIW, I’ve been reluctant to assume this is a new problem.
Usage patterns have changed in the dorms and people are
spending much more time using real-time protocols than ever
before. Those protocols make brief connectivity issues very
noticeable. It’s quite possible we’ve always had these
problems, but they rarely bothered users enough to make them
open trouble tickets.
*From:*The EDUCAUSE Wireless Issues Community Group Listserv
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>> *On Behalf Of
*Michael Davis
*Sent:* Friday, October 09, 2020 10:49 AM
*To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
*Subject:* Re: [WIRELESS-LAN] Client roaming
We're an Aruba shop and only seeing it on iOS and MacOS devices.
On 10/9/20 10:44 AM, Mallon, Jason wrote:
I have not been able to pinpoint a device type as of yet.
It seems to be happening across all platforms including
game systems.
Thanks,
*Jason Mallon*| Network Engineer III
<image001.jpg>
OIT
The University of Alabama
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<mailto:jemal...@ua.edu>
<image001.jpg>
*From: *The EDUCAUSE Wireless Issues Community Group
Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
*Date: *Friday, October 9, 2020 at 9:40 AM
*To: *WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
<WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
*Subject: *[EXTERNAL] Re: [WIRELESS-LAN] Client roaming
We’re an Aruba shop and have noticed similar behavior.
We’re having more incidents of intermittent connectivity
issues this year than in previous years, and most of those
clients are making questionable roaming decisions. It’s
been really prevalent with iOS and MacOS. Much less on
Windows and Android. There’s always been problems with
picking a good radio when those devices first connect,
but, historically, once they were steered to a good 5GHz
radio they stayed there. They’re not staying there this
year. We haven’t figured out why.
Chuck Enfield
Manager, Wireless and Cellular
Penn State IT
814.863.8715
*From:*The EDUCAUSE Wireless Issues Community Group
Listserv <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> *On Behalf Of
*Mallon, Jason
*Sent:* Friday, October 09, 2020 10:30 AM
*To:* WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU
<mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU>
*Subject:* [WIRELESS-LAN] Client roaming
Wondering if anybody else is seeing this. We currently
have devices doing a lot of roaming between 5 and 2.4
radios, especially in the dorms. I would not think
anything of it normally, but they are moving from a -52 to
-58 on the 5 radio to a -75 or worse on the 2.4 radio.
This doesn’t seem to matter what SSID they are connected
to. Band select is enabled on all SSIDs. We are running
Cisco 8540 WLCs on 8.10.130. Most of the complaints are
coming from the dorms, so I am not sure if it is happening
on our other controllers with an older code level.
Thanks,
*Jason Mallon*| Network Engineer III
<image002.jpg>
OIT
The University of Alabama
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James Helzerman
Wireless Network Engineer
University of Michigan - ITS
Phone: 734-615-9541
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