You probably either have 1) noisy channels, 2) incorrect ACK distances, 3) not optimal firmware version, 4) Or some third party factor effecting testing, such as testing devices that cant generate that much traffic or buffer sizes of routers.
The first thing to try is switch down to 20mhz channel and see if the speed tests stays the same or higher, or if it drops proportionally. I bet the 20Mhz channel will perform better. Dont rely on CCQ on its own. Its one indicator, but does not mean you have a clean channel for sure. Also remember, the Eth port is limited to 100mb, and if there is cable quality issues such as due to distance, it could autoadjust to half duplex. Test laptop to PC, isolating RF path, just for grins. It is very rare to find 40Mhz of clean spectrum for Dual polarity, and even the slightest packet loss and delay can drastically reduce TCP throughput. Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband ----- Original Message ----- From: Patrick D. Nix, Jr To: WISPA General List Sent: Monday, October 24, 2011 3:50 PM Subject: Re: [WISPA] UBNT Rocket M5 Throughput Problem is when I turn airmax on the speed really goes in the toilet. Best I can get is about 20mbps. According to ubiquiti airmax needs to be off up to 15km links, anything over that airmax needs to be on. Do you have good success with short airmax ptp links? From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Travis Johnson Sent: Monday, October 24, 2011 2:45 PM To: WISPA General List Subject: Re: [WISPA] UBNT Rocket M5 Throughput Turn AirMax on. Travis On 10/24/2011 1:36 PM, Patrick D. Nix, Jr wrote: What is the best real TCP throughput up/down anyone is getting on a PtP ubnt connection? We have two rocket M5 approx 1.5 mi, CCQ 97-98%, 40mhz channel width, airmax off. Displayed TX/RX rate is 270/270. Real TCP throughput via iperf radio to radio is 40-45mbps. Are there some config changes needed perhaps? --------------------------------------------------------------------------------WISPA Wants You! Join today!http://signup.wispa.org/-------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe:http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ ------------------------------------------------------------------------------ -------------------------------------------------------------------------------- WISPA Wants You! Join today! http://signup.wispa.org/ -------------------------------------------------------------------------------- WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
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