Echoing Lee - Your co channel issues are not surprising. Our 300 seat lecture hall sees 500 clients during a typical class. We have two 2GHz radios and four 5GHz radios active in this environment. Can you turn off / remove some radios?
On Tue, Nov 22, 2016 at 09:35 Zoltan Toth <zt...@cmcc.ca> wrote: > Hello, > > Thanks for your response. > > > We are currently running our Wi-Fi environment on HP 860 Wi-Fi Controller > configured for high availability failover, with approx. 92 access points of > the model HP 460 and 466 and 560 spread across the campus. The campus is > separated into 3 floors with 3 high density areas namely lecture hall 1 > with a seating capacity of 250 with about 400 connections (10 model 560 > APs) and lecture hall 2 with a seating capacity of 197 (6 model 560 APs) > and a general hall with seating capacity for 200 (4 model 466APs). We have > a 10 GB backbone an all switches and a 500MB internet connection. We are > running PRTG to monitor the bandwidth consumption at the backbone and > internet level and do not see any bottlenecks. > > > We have conducted a Wi-Fi survey and have their report which mentioned > co-channel interference in the 2.4Ghz band. According to the survey the > Wi-Fi signal coverage seems to be present in most of the campus areas. > > In order to minimize the co-channel interference, we have implemented the > following: > > 1- Removed 40 Mhz and 80 MHz bandwidth modes and set everything to 20 Mhz. > 2- Removed G on all our access points. > 3- Implemented band steering. > 4- We are now in the process of manually adjusting the 2.4 Ghz channels on > each AP so the neighboring APs do not have the same channel. In some cases, > we turn off the 2.4 Ghz completely. > > > Would you please comment on the following? > > 1- With the current hardware that we have is it advisable to proceed on > this route and configure the 2.4 Ghz manually? > 2- Should we completely disable 2.4 Ghz support? Is it a norm for high > density areas? > 3- Should we look to change hardware/ or vendor in order to have a > seamless environment. Should we just limit the change to the high density > areas or should we just change it overall. > 4- Is a single channel solution for the lecture halls advisable? Have you > experience a mix of single/multi-channel environment? How do they perform? > > Zoltan > __________________________________________ > Zoltan Toth - Manager, IT Infrastructure > Canadian Memorial Chiropractic College > > > > > > > On 2016-11-18, 11:11 AM, "The EDUCAUSE Wireless Issues Constituent Group > Listserv on behalf of Lee H Badman" <WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > on behalf of lhbad...@syr.edu> wrote: > > >Hi Zoltan, > > > >I'm assuming you're asking about wireless infrastructure and not client > devices? If so, I would say it's more about proper design than any > different technology. > > > >Also assuming that the lecture halls are in the mix with adjacent areas > that also part of the overall WLAN environment, you're generally limited to > what your current vendor (and code) support as opposed to trying to run > islands of different technology from Vendor B in the middle of Vendor A > WLAN. > > > >Which brings us back to design. In a perfect world, you'd have some sense > of what type of client devices are likely to be in those rooms, how many > active at a time, and what they might be doing. For modern APs, you might > service 200-300 "people" with 2-3 APs with captive antennas spaced and > oriented properly (depending on room layout), or you may need double that > with extremely low power and directional antennas. > > > >So... the answer is "it depends", as with all things wireless. > > > >Regards- > > > >Lee > > > >Lee Badman | CWNE #200 | Network Architect > > > >Information Technology Services > >206 Machinery Hall > >120 Smith Drive > >Syracuse, New York 13244 > >t 315.443.3003 f 315.443.4325 e lhbad...@syr.edu w its.syr.edu > >SYRACUSE UNIVERSITY > >syr.edu > > > > > >-----Original Message----- > >From: The EDUCAUSE Wireless Issues Constituent Group Listserv [mailto: > WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU] On Behalf Of Zoltan Toth > >Sent: Friday, November 18, 2016 9:47 AM > >To: WIRELESS-LAN@LISTSERV.EDUCAUSE.EDU > >Subject: [WIRELESS-LAN] High-Density Lecture Halls > > > >What technologies do you use for high density areas like Lecture Halls > for about 200-300 people? > > > >__________________________________________ > >Zoltan Toth - Manager, IT Infrastructure > >Canadian Memorial Chiropractic College > > > > > >This communication together with any attachments is for the exclusive and > confidential use of the addressee(s). 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