Hi Chris, I want to compare something with my link...
Can you please share what's the listed PHY rates were on your PCN for the link. 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: Wednesday, January 25, 2017 11:21:12 AM > Subject: Re: [AFMUG] B11, TDMA, and TCP > Power is already at the minimum (10dBm) on both sides. 2.2km link. > Chris Wright > Network Administrator > From: Af [mailto:af-boun...@afmug.com] On Behalf Of Faisal Imtiaz > Sent: Tuesday, January 24, 2017 9:56 PM > To: af@afmug.com > Subject: Re: [AFMUG] B11, TDMA, and TCP > > SNR 41, 42, 41, 41 > Turn down your power, and bring the SNR in the 30-35 range... > it will improve thruput and allow for the higher modulation. > 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: Wednesday, January 25, 2017 12:41:37 AM >> Subject: Re: [AFMUG] B11, TDMA, and TCP >> 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 < fai...@snappytelecom.net > >> 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: 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
