Subs at 1x or 2x can chew up your frame utilization faster than Netflix can.
On Fri, Jul 22, 2016 at 10:13 AM, Kurt Fankhauser <lists.wavel...@gmail.com> wrote: > 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 >>>> >>> >>> >>> >> >
