> -----Original Message-----
> From: The EDUCAUSE Wireless Issues Constituent Group Listserv
> [mailto:[email protected]] On Behalf Of Londono,
> Hernan
> Sent: 18 September 2012 20:44
> To: [email protected]
> Subject: [WIRELESS-LAN] High Number of Disconnections - Mac 10.5
> and up
>
> I would like to know if anyone is having an issue with a lot of
> disconnection for Mac computers with OS versions 10.5 and up. We
> are an Aruba deployment (M3 controllers and AP-105s/125s). For the
> past 3 weeks we have seen a high amount of disconnections where
> about 90% have been tracked Apple notebooks with the latest OS
> versions. I’d be grateful to hear if anyone one is having, of has
> had the same issue recently, and any possible recommendations to
> address the issues.

Hi All,

Mac OS has pretty extensive Wi-Fi debugging facilities. You can use the
command:

sudo
/System/Library/PrivateFrameworks/Apple80211.framework/Versions/Current/Resources/airport

with various parameters to enable logging, which either comes out in the
Terminal window when you run the command, or into system.log (use "Console"
to watch system.log easily), depending on what you debug.

For example with a few debug options on, you get stuff like this:

<going up>
Sep 19 21:20:13 kiwi kernel[0]: en1: BSSID changed to ec:c8:82:c2:27:00
Sep 19 21:20:13 kiwi kernel[0]: en1::IO80211Interface::postMessage bssid
changed
Sep 19 21:20:13 kiwi kernel[0]: AirPort: Link Up on en1
Sep 19 21:20:13 kiwi kernel[0]: en1: BSSID changed to ec:c8:82:c2:27:00
Sep 19 21:20:13 kiwi kernel[0]: en1::IO80211Interface::postMessage bssid
changed
Sep 19 21:20:13 kiwi.local eapolclient[1971]: en1 PEAP: successfully
authenticated
Sep 19 21:20:13 kiwi kernel[0]: AirPort: RSN handshake complete on en1
Sep 19 21:20:16 kiwi.local configd[18]: network changed: v4(en0:10.0.0.100,
en1+:172.21.197.129) DNS* Proxy SMB
Sep 19 21:20:16 kiwi.local UserEventAgent[11]: Captive: en1: Not probing
'eduroam' (protected network)

<going down>
Sep 19 21:20:48 kiwi kernel[0]: AirPort: Link Down on en1. Reason 8
(Disassociated because station leaving).
Sep 19 21:20:48 kiwi kernel[0]: en1: BSSID changed to ec:c8:82:c2:27:0f
Sep 19 21:20:48 kiwi kernel[0]: en1::IO80211Interface::postMessage bssid
changed
Sep 19 21:20:48 kiwi kernel[0]: 4508.427671: setDISASSOC from
ATH_INTERFACE_CLASS disconnectVap
Sep 19 21:20:48 kiwi kernel[0]: 4508.440918: setDISASSOCIATE ****STA SYNC
DISASSOC SUCCESS
Sep 19 21:20:49 kiwi.local configd[18]: network changed: v4(en0:10.0.0.100,
en1-:172.21.197.129) DNS* Proxy SMB


...what do your clients say? ...or does your controller have a client debug
option?

We're not seeing Mac issues. Our wireless service is IPv6 enabled (DHCPv6
only, no SLAAC) and we are Cisco/7.3.101.0.

Kind regards,
  James

-- 
James J J Hooper
Senior Network Specialist, University of Bristol
http://wireless.bristol.ac.uk
--

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