This sounds like an odd thing to try but have you tried switching which end is the AP and the STA. I Have not found UBNT PTP links to be anywhere close to symmetrical and have had 2 different times that switching the AP end to improve signal and troughput.
Also with some help of Justin Wilson we have found that there is more stability in setting up a EOIP link from MT to MT across the Links. Steve Barnes General Manager PCS-WIN / RC-WiFi -----Original Message----- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Stuart Pierce Sent: Tuesday, October 25, 2011 7:50 AM To: WISPA General List Subject: Re: [WISPA] UBNT Rocket M5 Throughput Have you tried to not use auto for ack and set the ack for 1.5 times the distance ? ---------- Original Message ---------------------------------- From: Mike Hammett <wispawirel...@ics-il.net> Reply-To: WISPA General List <wireless@wispa.org> Date: Tue, 25 Oct 2011 05:38:39 -0500 >I haven't deployed any Rocket PtP links with less than 55 signal. > >Have you followed UBNT's best practices guide? >http://www.ubnt.com/downloads/Best%20Practices.pdf > >Next step, hit up their forum or their support. Matt at UBNT worked some >magic on one of my links and it has been solid ever since. > >----- >Mike Hammett >Intelligent Computing Solutions >http://www.ics-il.com > > > >On 10/24/2011 4:52 PM, Patrick D. Nix, Jr wrote: >> >> Ok tried 20mhz, throughput drops about 10mbps to about 30mbps. My >> signal is at least 20db better than noise (signal -59 noise - 85+). >> ACK is set auto with distance of 2 miles (actual distance is approx >> 1.5mi). cable not an issue. any thoughts? >> >> *From:*wireless-boun...@wispa.org [mailto:wireless- boun...@wispa.org] >> *On Behalf Of *Tom DeReggi >> *Sent:* Monday, October 24, 2011 3:27 PM >> *To:* WISPA General List >> *Subject:* Re: [WISPA] UBNT Rocket M5 Throughput >> >> 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 <mailto:pni...@cnetworksolutions.com> >> >> *To:*WISPA General List <mailto:wireless@wispa.org> >> >> *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> >> [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! 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