For what it's worth, I echo many of the sentiments previously stated. In my book, your Wi-Fi design should encompass all things Wi-Fi including capacity, RF aspects, placement/mounting, and capacity planning. If the manufacturer, capabilities, architecture, and density questions are being asked *after* your site survey, what assumptions did the designer make? Wi-Fi design and site surveys are not disconnected functions - they are tightly integrated and highly dependent functions of a network implementation and no two vendors infrastructure gear are 100% interchangeable. In short, all of the things you're asking about should have been described to you as assumptions for your design or they should have been asked by the designer doing the site survey prior to them starting.
Design what you install, install what you design. -Sam On Tue, Nov 22, 2016 at 1:02 PM, Hunter Fuller <hf0...@uah.edu> wrote: > 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). Any other distribution, use or >> reproduction without the sender’s prior consent is unauthorized and >> strictly prohibited. If you have received this message in error, please >> notify the sender immediately and delete or shred the message without >> making any copies. >> > >> >********** >> >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/. >> > >> This communication together with any attachments is for the exclusive and >> confidential use of the addressee(s). Any other distribution, use or >> reproduction without the sender’s prior consent is unauthorized and >> strictly prohibited. If you have received this message in error, please >> notify the sender immediately and delete or shred the message without >> making any copies. >> >> ********** >> 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/.
