My experience with Mac OS is that while you may start out on 2.4, it will move itself to 5 given a bit of time – that’s assuming the vendor-specific band/ap-steering isn’t mucking with it, and the 5 radio is running in 40-wide.
I see this when students roll into the residence halls after dinner. Lots of clients start on 2.4, but within a short period all of those stationary Macs are then sitting on 5 GHz. Jeff From: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> on behalf of Philippe Hanset <[email protected]<mailto:[email protected]>> Reply-To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Date: Thursday, April 7, 2016 at 8:02 AM To: "[email protected]<mailto:[email protected]>" <[email protected]<mailto:[email protected]>> Subject: Re: [WIRELESS-LAN] Turning off 2.4 on a select SSID? Chris, The Wi-Fi deployment is definitely a big part of the equation but so it the “sticky client”. I’m writing this email just above a nice dual band Access-Point with an observed RSSI of -55dBm on my Macbook Pro, and I’m on 2.4 GHz :( (I started my journey far away from that same AP…) Philippe Philippe Hanset www.anyroam.net<http://www.anyroam.net> www.eduroam.us +1 (865) 236-0770 GPG key id: 0xF2636F9C On Apr 7, 2016, at 10:43 AM, Chris Adams (IT) <[email protected]<mailto:[email protected]>> wrote: Phillipe, I would suggest that it’s not always an issue of the client not supporting 5ghz, but rather that some deployments are not conducive to good 5ghz propagation – we’ve all seen WAPs in hallways between classrooms before. In my experience, clients that associate to 2.4ghz are doing so due to lack of good 5ghz signal, and less so due to client radios. Thanks, Chris Adams, CISSP Director, Network & Telecom Services Division of Information Technology University of North Georgia From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Philippe Hanset Sent: Thursday, April 7, 2016 10:37 AM To: [email protected]<mailto:[email protected]> Subject: Re: [WIRELESS-LAN] Turning off 2.4 on a select SSID? My ears have been burning… I understand Hector's comment about the spirit of eduroam, but like Ryan I have also be tempted in the past to only support 5 GHz in certain areas because 2.4 GHz was becoming too much of a pain (e.g. Dormitories). The eduroam Compliance Statement requires 802.11, no frequency mentioned. eduroam users with 2.4GHz devices will just not see the available SSID if a school decides to only offer it at 5 GHz in certain locations. In a sense it is no different than schools only offering eduroam in certain locations. Now, if the entire eduroam SSID for all locations at the school is on 5 GHz, it might be challenging. But how many clients REALLY can’t support 5 GHz? The stats showing 2.4 GHz VS 5 GHz usage can be deceiving. Is it a client with both radios and a poor selection of spectrum, or is it really 2.4 Ghz only capable devices? It seems that the best way to know if 5 GHz only is fine for your community is to “just do it”. I checked cheap laptops at BestBuy and under specifications you find “Wireless-AC” or “Wireless-B, G, N". No reference to the type of radio. Those darn marketing people, they will get you every time. Philippe Philippe Hanset www.anyroam.net<http://www.anyroam.net/> www.eduroam.us<http://www.eduroam.us/> +1 (865) 236-0770 GPG key id: 0xF2636F9C On Apr 7, 2016, at 10:04 AM, Turner, Ryan H <[email protected]<mailto:[email protected]>> wrote: I don't think so. I think anytime a university enforces a uniform policy that applies to all folks, it shouldn't be an issue. Of course, we are a long way from actually doing this. We'll involve Phillipe if we move forward. Sent from Outlook Mobile<https://aka.ms/qtex0l> On Thu, Apr 7, 2016 at 7:01 AM -0700, "Hector J Rios" <[email protected]<mailto:[email protected]>> wrote: I would go back to Jason's comment and reference eduroam's policy. I personally think that only allowing 5GHz on eduroam goes against the spirit the global availability of eduroam. My 2 cents. Hector Rios Louisiana State University -----Original Message----- From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:[email protected]] On Behalf Of Matthew Newton Sent: Thursday, April 07, 2016 8:54 AM To: [email protected]<mailto:[email protected]> Subject: Re: [WIRELESS-LAN] Turning off 2.4 on a select SSID? On Thu, Apr 07, 2016 at 01:27:04PM +0000, Joseph M. Karam wrote: > We offer 2.4 and 5 GHz service. When we have conflicts, we work with > departments to give them a channel in the 2.4 GHz space, then we take > that channel out of our central infrastructure. > So, for example we gave engineering channel 6 for all of their labs, > and we took that out of our central infrastructure. So far it has > worked well and we can play together nicely What do you do after you've given the last remaining free 2.4Ghz channel to the third department that requests one and you've got none left for yourselves? And presumably Engineering have lots of CCI because all of their APs are on the same frequency? Not critcising, just trying to understand! :) Matthew -- Matthew Newton, Ph.D. <[email protected]<mailto:[email protected]>> Systems Specialist, Infrastructure Services, I.T. Services, University of Leicester, Leicester LE1 7RH, United Kingdom For IT help contact helpdesk extn. 2253, <[email protected]<mailto:[email protected]>> ********** 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/. ********** 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/. ********** Participation and subscription information for this EDUCAUSE Constituent Group discussion list can be found at http://www.educause.edu/groups/.
