450m will do 400 Mbps in 20mhz channel but only if users are spread out through all 14 beams. If you see all the users in one beam, the capacity won't be that high.
On Fri, Jul 22, 2016 at 10:58 AM, Adam Moffett <dmmoff...@gmail.com> wrote: > I forgot about that, and I missed the presentation. > That's 450m right? How much capacity did they claim on that? > > > ------ Original Message ------ > From: "George Skorup" <geo...@cbcast.com> > To: af@afmug.com > Sent: 7/22/2016 11:52:52 AM > Subject: Re: [AFMUG] Over subscription Rate > > > Let Medusa seduce ya with her 14 beams. > > On 7/22/2016 10:31 AM, ch...@wbmfg.com wrote: > > I would be giving everyone 25 Mbps if I was to put it up. So, I doubt I > could put more than about 6 on there without running into trouble. > > *From:* Kurt Fankhauser <lists.wavel...@gmail.com> > *Sent:* Friday, July 22, 2016 9:13 AM > *To:* af@afmug.com > *Subject:* Re: [AFMUG] Over subscription Rate > > With the Cambium PMP450 I monitor the framelink utilization via SNMP to > determine if an AP is oversubscribed or not. I have 25 subs on this ap and > it peaks at about 25% utilization on the downlink every night. Customers > are a mix of 1.5Meg / 3.0Meg / 6Meg download with up to 20mbps bursting. At > this rate I would safely say I could put 75 subscribers on this AP but it > really is dependent on who your customers are. I have a similar AP only > serving 15 customers that will hit 50% utilization sometimes. Apparently > the customers in that area must watch more Netflix, lol. > > On Fri, Jul 22, 2016 at 9:21 AM, Sam Morris <w...@csilogan.com> wrote: > >> Very helpful Adam. Thank you! >> >> Sam >> >> >> On 7/21/2016 4:18 PM, Adam Moffett wrote: >> >>> I don't believe in over subscription rates. :) >>> >>> For planning purposes, I assume we'll get 2/3's of advertised throughput >>> from the AP and then plan on 8:1. >>> >>> In real life you have to abandon the over subscription rate after the >>> planning phase and monitor what's actually happening on the AP's. >>> Averaging hundreds of users together you'll get actual usage that seems >>> in line with an 8:1 or 6:1 ratio. On an individual AP you tend to not >>> have enough capacity for more than 30-50 people, so you can easily get a >>> few statistical outliers in the mix that make actual consumption not >>> line up with the planned over subscription rate. >>> >>> It goes both ways too....I've seen sites with actual over subscription >>> of 20:1 and everything's working ok, and other actual sites fall apart >>> when oversub was only 4:1. >>> >>> >>> ------ Original Message ------ >>> From: "Sam Morris" <w...@csilogan.com> >>> To: af@afmug.com >>> Sent: 7/21/2016 7:58:18 AM >>> Subject: [AFMUG] Over subscription Rate >>> >>> At what level do you over subscribe your APs? 4:1? 8:1? 15:1? Or >>>> something else? >>>> >>>> Thanks >>>> Sam >>>> >>> >>> >>> >> > > > -- Darin Steffl Minnesota WiFi www.mnwifi.com 507-634-WiFi <http://www.facebook.com/minnesotawifi> Like us on Facebook <http://www.facebook.com/minnesotawifi>
