Hi Brad, Alvarion firmware 5.5.26 and above have some decent mechanisms to deal with noise and flooded RF environments. However, the clients need to have a decent receive level (roughly -65 or better) if the noise floor is higher than -90 in order to keep traffic flowing decently. There are a couple other mechanisms internally to the radio such as Noise Immunity controls and a few others. 5.5 and above is almost a requirement when running Alvarion VL equipment. Anything below 5.5 doesn't show noise floor or RSSI (they only show SNR, which is just weird).
On 4/24/10 8:05 PM, "Brad Belton" <b...@belwave.com> wrote: > Agreed. A few years ago we tried (very hard) to deploy Alvarion VL. > Crashed and burned to the point we were tarnishing our reputation with a > valued client before we threw in the towel. No mechanism to deal with noise > AT ALL. For rural or third world deployments I bet it does great, but for > an unfriendly RF environment Alvarion VL is not a good fit IMO. > > Best, > > > Brad > > > -----Original Message----- > From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On > Behalf Of Jeremy Parr > Sent: Saturday, April 24, 2010 6:59 PM > To: WISPA General List > Subject: Re: [WISPA] Alvarion VL Users > > On 24 April 2010 19:55, Charles Wu <c...@cticonnect.com> wrote: >> Any Alvarion VL users out there? We're inheriting several towers, and > curious about performance -- in particular with voice and contention > > Poor. No RADIUS auth for MAC, no polling (contention based), no > transmit sync. The only real benefit over WiFi is the support for > variable frame sizes in later firmware/hardware releases. > > > ---------------------------------------------------------------------------- > ---- > 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/ -- Adam Kennedy Network Engineer Omnicity, Inc -------------------------------------------------------------------------------- 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/
