This is why I asked Cambium if we could run the OFDM @ 5.4GHz and the
FSK @ 5.7GHz. But they said it was unpossible with the 450 combo AP
hardware. Woulda been nice.
On 11/6/2015 2:45 PM, Adam Moffett wrote:
+1 Keep the long range people on FSK.
On 11/6/2015 2:30 PM, Forrest Christian (List Account) wrote:
Ripping and replacing a FSK with a 450 is generally not going to go
well unless you are absolutely certain your customers are going to
modulate at the highest rate.
A better scenario if you can manage it is to hang the 450 alongside
the FSK and then only move the heavy customers with strong signals.
On Nov 6, 2015 12:21 PM, "Eric Muehleisen" <ericm...@gmail.com
<mailto:ericm...@gmail.com>> 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
<mailto: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 <http://www.surfici.net>
>
>
> What can ICI do for you?
>
> Broadband Wireless - PtP/PtMP Solutions - WiMax - Mesh
Wifi/Hotzones - IP Security - Fiber - Tower - Infrastructure.
>
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>
> -----Original Message-----
> From: Af [mailto:af-boun...@afmug.com
<mailto:af-boun...@afmug.com>] On Behalf Of Eric Muehleisen
> Sent: Friday, November 6, 2015 12:51 PM
> To: af@afmug.com <mailto: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.
>
