I've been seeing this problem as well. Has anyone found a solution to it? 

 

We are using Nortel/Trapeze gear. Our WPA/TKIP/802.1x ssid is more powerful
than our WPA-PSK ssid even though theyre coming from the same radio with the
same power setting?!

 

Any advice is appreciated.

 

Matt

[EMAIL PROTECTED]

 

From: Lee H Badman [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, October 02, 2007 12:23 PM
To: [email protected]
Subject: Re: [WIRELESS-LAN]

 

I completely agree on your summation of Windows, and it's flaky "bars".  But
as Peter (Queensland University) mentions, it becomes more puzzling when
tools like AirMagnet seem to back up the phenomenon. 

 

Lee H. Badman

Wireless/Network Engineer

Information Technology and Services

Syracuse University

315 443-3003

  _____  

From: Emerson Parker [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, October 02, 2007 10:47 AM
To: [email protected]
Subject: Re: [WIRELESS-LAN]

 

As far as Windows is concerned, it does an average of the signal levels it
sees.  The problem is that Windows doesn't scan often enough or long enough
to actually see the beacon and sometimes records a zero measurement.
Multiple readings of zero results in a lower average and the false
impression of widely fluctuating signal levels.  .

 

If not windows, it could be as simple as the AP alternating antennas for the
beacon and the position of the clients can't see the second antenna as well
as the first.

 

-Emerson

 

 

  _____  

From: Peter Arbouin [mailto:[EMAIL PROTECTED] 
Sent: Monday, October 01, 2007 11:59 PM
To: [email protected]
Subject: Re: [WIRELESS-LAN]

 

Hi,

 

We have also seen this when looking into problem areas using Airmagnet
Laptop analyzer the signal strength from the same ap on different ssids
fluctuates, usually with the open ssid having stronger signal strength.

 

Not sure why, but we would also be interested to hear if there is a reason.

 

Regards,

 

Peter. 

 

Peter Arbouin
Network Engineer
Network Operations Centre, ITS
Queensland University of Technology
Brisbane, QLD, Australia
PH: (07) 313 81030

 

 

 

  _____  

From: Lee H Badman [mailto:[EMAIL PROTECTED] 
Sent: Tuesday, 2 October 2007 6:16 AM
To: [email protected]
Subject: [WIRELESS-LAN]

Just now starting to poke at this- we have an open-auth network and an
802.1x network. In areas where we are more hot-spotty and a client can only
see a single AP, we're getting a fair number of reports that the 802.1x
network is weaker in signal out of the same LWAPP Cisco AP than the open
WLAN SSID is. 

 

My first thought is that it's likely in the way that RSSI/"bars" are
displayed on individual clients, but we're also hearing that the 802.1x
network in these spots was too weak to use, but when jumping over to the
open network, the connection was usable. Has anyone else had to deal with
this perception? Mostly this seems to be a Mac issue, but not exclusively. 

 

Again- haven't done much real testing, but are hearing it enough where I
wonder if others have seen similar.

 

Lee H. Badman

Wireless/Network Engineer

Information Technology and Services

Syracuse University

315 443-3003

 

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