The reason I asked about the 13.2.1 vs 13.4 is I believe they made some
framing or scheduling optimizations w/ 13.4. Just wondering if you'd see
a difference if you took a sector and its SMs back to 13.2.1. Doubt it,
but you never know.
On 11/6/2015 1:21 PM, Eric Muehleisen wrote:
Tyson,
1. We are using Cambium stock 65* dualslant antennas.
2. Mix of routers. We have a BYOR (bring your own router) policy.
3. All AP's are sync'd with either CMM4 or CTM2.
Adam,
We will certainly focus more attention on those SM's that have poor
modulation. It wouldn't surprise me if the most active SM's are the
ones stuck at 1x or 2x.
George,
We have not considered downgrading. Our entire network has been
upgraded to 13.4. That over 500 SM's at this point. I'm a little
nervous about downgrading.
The reality here is that upgrading a FSK sector to 450 gets us only a
little over double the capacity. FSK aggregates around 13mb/s and
around 27mb/s aggregate for the 450. This is quite disappointing. It
appears that we must now be very selective over what SM's can
register. A nearly impossible task in our situation. Use caution if
you plan on ripping and replacing your old FSK. You will not yield the
kind of throughput you'd expect.
On Fri, Nov 6, 2015 at 12:28 PM, Tyson Burris @ Internet
Communications Inc <t...@franklinisp.net> wrote:
Eric,
Thanks for bringing this up. We recently started deploying about 30 450 AP's.
Our testing in the field and with customers is producing the same EXACT problem
you just reported.
More importantly, we see this problem on AP's with low SM's to high SM ranges
(5-45). Same firmware.
Let's compare some notes:
1. What antennas are you using?
2. What routers / OS are you using?
3. What sync source are you using?
We see high frame uses even on the AP's with low SM's and great modulation
rates.
I can understand if a large number of SM's have low modulation it will eat up
frames, but the outcome is the same on low and high SM counts.
Tyson Burris, President
Internet Communications Inc.
739 Commerce Dr.
Franklin, IN 46131
317-738-0320 Daytime #
317-412-1540 Cell/Direct #
Online: www.surfici.net
What can ICI do for you?
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-----Original Message-----
From: Af [mailto:af-boun...@afmug.com] On Behalf Of Eric Muehleisen
Sent: Friday, November 6, 2015 12:51 PM
To: af@afmug.com
Subject: [AFMUG] 450 frame utilization and performance issues
We have a few 450 AP's with 30-40 subscribers and have been getting several
slow speed complaints lately. I just chaulked it up to issues with the SM since
the AP rarely got over 20mb/s downlink. We upgraded to 13.4 recently so we
could watch our frame utilization. We started graphing it over night and as you
can see, we are hitting 100% for sustained periods of time. During that time
the AP is only doing approx. 23mb/s. This particular AP has 34 registered SM
and the majority show 6x and 4x with 4 or 5 SM's at 2x and 1x. The performance
is a major disappointment. Anyone else have similar experiences?
AP configuration: 20mhz channels, 2.5ms frame, 10 miles, 75% downlink,
3 contention slots.
Attached is a screenshot of the utilization and sector throughput calculator
from the Capacity Planner R13.
