Craig, There are always ways to mitigate the cell issue e.g. depending on the vendor AP, adding a small cell offload module. For the shopping mall, installing an underlayment on lowest floor with a foil backing – typically for thermal use, but really effective on blocking WiFi.
Given the hostile environment, I don’t see a lot of tuning options here for combating the problem in 2.4. Jeff From: "wireless-lan@listserv.educause.edu" <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> on behalf of Craig Simons <craigsim...@sfu.ca> Reply-To: "wireless-lan@listserv.educause.edu" <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Date: Monday, May 30, 2016 at 10:16 AM To: "wireless-lan@listserv.educause.edu" <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU> Subject: Re: [WIRELESS-LAN] Beacon Intervals Yes, that’s a large part of the problem… The other is being on top of a shopping mall… I briefly went down the rf coating investigation, but this would also block cell signals as well… which would be a deal killer. - Craig On May 27, 2016, at 1:36 PM, Jeffrey D. Sessler <j...@scrippscollege.edu<mailto:j...@scrippscollege.edu>> wrote: Craig, Does your downtown campus have a lot of externally-facing windows? If so, consider having a low-e-coating film added to all of them. Yes, there is an expense involved, but it’s an effective way to reduce/cutoff/eliminate the urban WiFi influencers. Jeff From: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@listserv.educause.edu>> on behalf of Craig Simons <craigsim...@sfu.ca<mailto:craigsim...@sfu.ca>> Reply-To: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@listserv.educause.edu>> Date: Friday, May 27, 2016 at 12:44 PM To: "wireless-lan@listserv.educause.edu<mailto:wireless-lan@listserv.educause.edu>" <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@listserv.educause.edu>> Subject: Re: [WIRELESS-LAN] Beacon Intervals Jason, Thanks for the reply. Actually the link you mention is what got me going on this in the first place. Our downtown campus is situated in a very busy urban environment - hotels, coffee shops, apartments, you name it. Several places in the building can see 25+ SSIDs, of which only 3 are ours. I’ve done as much tuning as I can to limit co-channel interference on 2.4, the minimum data rate is 12 (I could boost to 24 I suppose), so I’m just looking for more tricks to try. - Craig On May 26, 2016, at 6:38 PM, Jason Cook <jason.c...@adelaide.edu.au<mailto:jason.c...@adelaide.edu.au>> wrote: My understanding is you really don’t want to be playing with this, perhaps if all other avenues have been exhausted it can be investigated…. Reduce your SSID’s, disable lower data rates, reduce co-channel AP’s (your own and neighbours) If you haven’t seen it play with this tool (Changing the beacon Rate shows the variations) http://www.revolutionwifi.net/revolutionwifi/p/ssid-overhead-calculator.html -- Jason Cook Technology Services The University of Adelaide, AUSTRALIA 5005 Ph : +61 8 8313 4800 From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto:WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Britton Anderson Sent: Friday, 27 May 2016 10:10 AM To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU<mailto:WIRELESS-LAN@listserv.educause.edu> Subject: Re: [WIRELESS-LAN] Beacon Intervals Hey Craig, It really depends on how dense your environment is. Keep in mind, the longer your beacon interval, the slower the roaming time clients take between APs. In my mind, the overhead that beacons introduce is far less of an issue than mobile clients dropping connections when they're roaming through the network. Especially considering the vast majority of cell carriers using WiFi calling now. --Britton Britton Anderson<mailto:blanders...@alaska.edu> | Senior Network Communications Specialist | University of Alaska<http://www.alaska.edu/oit> | 907.450.8250 On Thu, May 26, 2016 at 4:16 PM, Craig Simons <craigsim...@sfu.ca<mailto:craigsim...@sfu.ca>> wrote: Hello Group, On most vendor products that I’ve seen, the beacon intervals for SSIDs by default are set to ~100ms. Has anyone gone to the lengths of increasing this default in an effort to combat overhead? - Craig SFU SIMON FRASER UNIVERSITY Network Services Craig Simons Network Operations Manager Phone: 778-782-8036<tel:778-782-8036> Cell: 604-649-7977<tel:604-649-7977> Email: craigsim...@sfu.ca<mailto:craigsim...@sfu.ca> Twitter: simonscraig<http://www.twitter.com/simonscraig> ********** 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/.
