MR55 Roaming problem on Windows only

[LEGOFF]

Hello all,

I have a roaming problem only on windows.

Design is composed of:
* MR55 with 802.11ax disabled
* MS225 and MS350 in PoE in version 11.30
* MS350 in L3 with DHCP activated on 53 VLANs

Environment:
* HEQ building in openspace
* 7 floors
* ten APs per floor *
* Device: MACBOOK PRO, WINDOWS 10, Iphone and Android phone

Configuration:
* AP in version 26.7
* 802.11r and 802.11w disabled
* authentication with WPA PSK
* auto bandwidth
* client balancing enable
* band selection per AP with dual band but without steering
* auto power 2,4Ghz and 5Ghz at 28 Dbm Max
* Bridge mode
* 5 SSID (1SSID by VLAN)

Symptom:
during the move, the windows machine loses the SSID and resumes it for a few seconds.
The windows learns are IP in DHCP then loses the radio signal while I am below the AP

Test:
windows set in aggressive mode => KO
power decrease => KO
2.4Ghz prioritization on windows => KO
5Ghz prioritization on windows => KO
IP Static on windows => KO

Troubleshooting:
* 802.11 disassociation => unknown reason

is this a bug?
old version AP in 26.6.1 but problem is MAC with 802.11ax enable

Case Meraki: 04884362

Has anyone had this problem? and how to solve it?

Thank you all

[seroal22]

Hi,
give RC v26.7 a try.

See here:
https://community.meraki.com/t5/Wireless-LAN/Updated-network-with-MR42E-to-26-6-1-causes-network-out...


Is your client connected via 2,4GHZ?

Edit:

Excuse me, got your current version wrong.... You´re already on 26.7....

[NolanHerring]

* MR55 with 802.11ax disabled

Is 802.11ax being enabled causing issues also?

* auto bandwidth

Are you talking channel bandwidth?

If so I would set this to 20MHz, unless you have lots of attenuation between floors, then you could possibly use 40MHz.

* client balancing enable

I would turn this off, this will have direct impact on clients roaming because AP's will ignore their requests, to force them to go to another AP etc.

* band selection per AP with dual band but without steering

I would try your best, if you can of course, to seperate the 2.4GHz and 5GHz SSID's, and not using dual-band or band-steering at all. Chances are you won't be able to but worth a shot.

* auto power 2,4Ghz and 5Ghz at 28 Dbm Max

I would not allow Auto Power to run rampant like this. You want to reign in the TX power levels to a 'range', like say 8 to 11dBm for 2.4GHz and 11 to 17dBm for 5GHz etc. Honestly this part here is going to rely on your site survey if you had one performed. Where are your radio's falling at with their power levels now?

Two other things you did not mention

1. What are you using for your channels? Is AutoRF using all available (DFS included) channels?

2. What hardware does the windows computer have for its wireless card? And what driver version does it have? This is far more important than you realize so be specific

[Nash]

Seconding the drivers question on your Windows boxes. Lot of people walk around with old drivers and have no idea til they run into problems.