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
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
