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: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU 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: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU 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 ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
