Firmware 1.4.4
SNR 41, 42, 41, 41
Flow Control had no effect so it remains disabled for now.

Sent via mobile phone.

On Jan 24, 2017, at 9:05 PM, Faisal Imtiaz 
<[email protected]<mailto:[email protected]>> wrote:

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: 
[email protected]<mailto:[email protected]>

________________________________
From: "Chris Wright" <[email protected]<mailto:[email protected]>>
To: [email protected]<mailto:[email protected]>
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<http://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<http://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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