What version for firmware is on the radio ? 

and What your SNR on the two chains (both directions, i.e. 4 readings). 

I can tell you that we do not see the behavior you are describing below... 
But I can also tell you that we had to do some 'tuning' on settings including 
flow control .. 
our B11's plug into netonix Switches.... 

Regards. 

Faisal Imtiaz 
Snappy Internet & Telecom 
7266 SW 48 Street 
Miami, FL 33155 
Tel: 305 663 5518 x 232 

Help-desk: (305)663-5518 Option 2 or Email: supp...@snappytelecom.net 

> From: "Chris Wright" <ch...@velociter.net>
> To: af@afmug.com
> Sent: Tuesday, January 24, 2017 8:02:58 PM
> Subject: [AFMUG] B11, TDMA, and TCP

> According to Mimosa, I should be telling my customers that if they’re using 
> the
> most popular metric in the world for testing internet speeds, they’re doing it
> wrong (I concede that while this may be technically correct, my customers – 
> and
> yours too – don’t do technically correct very well.”

> When TDMA is set to 75/25, 8ms window, MAC Tx/Rx is 980/290. This gives me as
> much Tx bandwidth as I require for peak times, but no one client IP can
> download more than 20mbps of TCP traffic (from my speedtest.net at the edge,
> nor anyone else’s beyond my edge).

> When TDMA is Auto, MAC Tx/Rx is 780/780 (lower Tx, which is undesirable as 
> it’s
> 100mbps shy of what I need during peak hours), but TCP throughput per client 
> is
> greatly increased (150+mbps).

> So I’m in a pickle. Either my scrupulous customers can get those coveted
> speedtest.net results they love seeing as they run them every thirty seconds
> ad-nauseum at the cost of overall Tx capacity of the link. Or I give myself
> some headroom in link capacity but the fastest speeds my 100mbps clients can
> see is 20mbps.

> What’s even stranger is that client upload seems unaffected. I can upload
> 150+mbps from my test on the link no matter what TDMA is configured. I hit up
> Mimosa’s chat support was as chipper as they were unyielding in their idea 
> that
> I should test in a way that caters to the B11’s shortcomings. I’ve been a
> Mimosa fanboy for a while now but boy am I feeling burned right now.

> Chris Wright

> Network Administrator

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