Re: [WISPA] Alvarion VL Users
So what sort of pps ratio are you getting on VL? Are you selling voice over multipoint? How many *lines* are you putting out on a CPE and supporting reliably -- 5? 10? 20? Also, could you send me that 500+ page pdf? Can't seem to find it anywhere on Alvarion's site -Charles -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of jp Sent: Monday, April 26, 2010 12:37 PM To: can...@believewireless.net; WISPA General List Subject: Re: [WISPA] Alvarion VL Users We've been using VL since it came out. I would also recommend the 5.5.26 firmware for vl 5.8ghz. We routinely install it on overlapping or adjacent channels on the same tower. (I.e. 5830 for a backhaul, 5820 for a sector 40 feet away). If you have revA gear, change it to rev C or better and sell or reuse the revA gear for a rural low volume backhaul. In revB and newer hardware, it has some things 5ghz wifi stuff doesn't. Packet aggregation of up to 4000+ byte radio packets is possible with rev c or newer. This lets you do very high PPS rates for small packets that regular wifi gear won't do. The modulation adaption algorithm is completely adjustable. The retries, etc.. are all fully adjustable. Spectrum analyzer is very nice. You have adjustable noise floor for use in high interference areas. You also have ATPC which I think all gear should have. It's got something called drap for prioritizing voice calls, but I can't explain it. Every feature is highly tweakable. It's completely programmable with SNMP. We have a script to program customer radios before they go out the door with installers. After it's installed, everything is monitorable with SNMP, unlike MT, ubnt, etc.. It has a nice 500+ page pdf manual for the software and everything is well explained, unlike MT/UBNT. The software is reliable; I have links with uptimes over a year. It's available in US certified 5.4. They have quality integrated MTI antennas. The major downfall of VL is the CPE are speed limited, requiring an upgrade key purchase to get full speed. For this reason, we are upgrading some sectors to UBNT-M5 for more customer speed. We'll reuse the VL radios elsewhere as we are spoiled by them. A minor downfall is their support ticketing system only uses IE, but we don't deal with their support very much. On Sun, Apr 25, 2010 at 10:15:44AM -0400, can...@believewireless.net wrote: > VL has been a love/hate for us. When it works, it works great. > However, it has several serious flaws. It has the same > associate/dis-associate issue seen with other WDS implementations. If > a weak client continues to associate/dis-associate, packet loss to all > radios on the sector happens and can even shut down the AP for long > periods of time. No easy way to see on the AP the number of times > this happens either. SNR is completely worthless for determining > anything. Some of our worst channels are ones where clients show > fantastic SNR. And, as said before, noise is a killer. It's very > difficult to co-locate APs on the same tower even with 20 MHz of > separation. > > Now that Canopy 430 is out, we'll be ditching Alvarion and moving to > Canopy. Canopy has been the best product we have used and the > software continues to mature and while bug fixes are slow to be > released, they typically are addresses. > > > > 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/ -- /* Jason Philbrook | Midcoast Internet Solutions - Wireless and DSL KB1IOJ| Broadband Internet Access, Dialup, and Hosting http://f64.nu/ | for Midcoast Mainehttp://www.midcoast.com/ */ 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/
Re: [WISPA] Alvarion VL Users
I've had VL for a number of years now. Only 7 subs or so on it. Over all I'd say the product is great. Except for one thing. At random times, usually 8am monday morn but others as well, it'll just quit passing traffic. I have 2 ap's at the same tower and they'll both go down at the same time. Here's the strange part. You can log into the cpe units tied to those towers. The customer's just can't get data through the AP. The customer can ping the ap, just not past the ap. Wait an hour and it'll be fine again. Might be ok for a week or a day or a month. The only cure is to wait or power cycle (reboot won't fix it). No firmware has fixed it. shrug marlon - Original Message - From: "Tom DeReggi" To: "WISPA General List" Sent: Monday, April 26, 2010 9:03 AM Subject: Re: [WISPA] Alvarion VL Users >A have to say, some pf those past comments are a bit unfair, and not > relevent to the question asked. > > Maybe because Patrick is now at Aperto, and not here to defend Alvarion? > :-) > > We dont deploy Alvarion, but we have used it in some cases. It simply is > not > cost justified for us, since how we deploy. We generally have a very low > CPE > count per AP, and Alvarion has a heavy AP price, and we serve mostly > Multi-tenant buildings, requiring high capacity CPE, and Alvarion charges > more for allowing full throughput both at the AP and CPE. Licensing cost > for > full featured CPE/AP is expensive, no doubt. We can talk all day about > why > it might not be cost justified. Or maybe how it lacks on-the-fly > flexibilty > being single pol, single band. > > But saying that the gear does not perform, (or worse in noise compared to > products of similar class) simply is not true. Alvarion was one of the > first > that actually developed firmware optimized for quality VOIP. Their > adaptive > modulation routines work well. There ability to scan at CPE for noise > remotely is cool. There insightfulness to have exterior LED represent SNR > instead of RSSI was ingenious. They have super clean RF > transmitters/receivers, because they are intentionally single band radios. > It might even have better embedded filters? Alvarion uses the same Atheros > OFDM RF Chip as any other Atheros radio, how in the world can one justify > saying that Alvarion has worse RF performance in noise? It all boils down > to > SNR for everybody. Alvarion does however have enhancements, to make it one > better than gear that uses just a basic Atheros chip. And Alvarion is > designed to enable operators to select antennas of choice to enable full > allowable power within the band. > > Many successful large scale residential projects are based on Alvarion VL, > because it can scale with large CPE relatively well. > > My point here is it important to compare apples to apples. Sure, Canopy, > Trango, and even Proxim DSSS systems with Circular can handle noise much > much better than OFDM and QAM modulation type gear can. Its reasons why > we > still use Trango in many of our noisy PtMP locations. But comparing > Alvarion VL to other OFDM products, I believe Alvarion compares very well. > I'd argue that Alvarion is probably one of the best perfoming radios still > based on CDMA/CA, because of their proprietary MAC. Although I agree > there > are advantages to Polling which Is why we primarilly use polling systems, > there are many advantages to CDMA/CA also, and it should not be discounted > because of that, unless its determined a Polling system is actually needed > for the application. > > Saying Alvarion VL has nothing much over WIFI, is a croc, and simply not > true. We haven't even discussed the rock solid hardware, such as thick > heatsink cases, etc. > > Tom DeReggi > RapidDSL & Wireless, Inc > IntAirNet- Fixed Wireless Broadband > > > - Original Message - > From: "Brad Belton" > To: "'WISPA General List'" > Sent: Saturday, April 24, 2010 8:05 PM > Subject: Re: [WISPA] Alvarion VL Users > > > 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 V
Re: [WISPA] Alvarion VL Users
We've been using VL since it came out. I would also recommend the 5.5.26 firmware for vl 5.8ghz. We routinely install it on overlapping or adjacent channels on the same tower. (I.e. 5830 for a backhaul, 5820 for a sector 40 feet away). If you have revA gear, change it to rev C or better and sell or reuse the revA gear for a rural low volume backhaul. In revB and newer hardware, it has some things 5ghz wifi stuff doesn't. Packet aggregation of up to 4000+ byte radio packets is possible with rev c or newer. This lets you do very high PPS rates for small packets that regular wifi gear won't do. The modulation adaption algorithm is completely adjustable. The retries, etc.. are all fully adjustable. Spectrum analyzer is very nice. You have adjustable noise floor for use in high interference areas. You also have ATPC which I think all gear should have. It's got something called drap for prioritizing voice calls, but I can't explain it. Every feature is highly tweakable. It's completely programmable with SNMP. We have a script to program customer radios before they go out the door with installers. After it's installed, everything is monitorable with SNMP, unlike MT, ubnt, etc.. It has a nice 500+ page pdf manual for the software and everything is well explained, unlike MT/UBNT. The software is reliable; I have links with uptimes over a year. It's available in US certified 5.4. They have quality integrated MTI antennas. The major downfall of VL is the CPE are speed limited, requiring an upgrade key purchase to get full speed. For this reason, we are upgrading some sectors to UBNT-M5 for more customer speed. We'll reuse the VL radios elsewhere as we are spoiled by them. A minor downfall is their support ticketing system only uses IE, but we don't deal with their support very much. On Sun, Apr 25, 2010 at 10:15:44AM -0400, can...@believewireless.net wrote: > VL has been a love/hate for us. When it works, it works great. > However, it has several serious flaws. It has the same > associate/dis-associate issue seen with other WDS implementations. If > a weak client continues to associate/dis-associate, packet loss to all > radios on the sector happens and can even shut down the AP for long > periods of time. No easy way to see on the AP the number of times > this happens either. SNR is completely worthless for determining > anything. Some of our worst channels are ones where clients show > fantastic SNR. And, as said before, noise is a killer. It's very > difficult to co-locate APs on the same tower even with 20 MHz of > separation. > > Now that Canopy 430 is out, we'll be ditching Alvarion and moving to > Canopy. Canopy has been the best product we have used and the > software continues to mature and while bug fixes are slow to be > released, they typically are addresses. > > > > 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/ -- /* Jason Philbrook | Midcoast Internet Solutions - Wireless and DSL KB1IOJ| Broadband Internet Access, Dialup, and Hosting http://f64.nu/ | for Midcoast Mainehttp://www.midcoast.com/ */ 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/
Re: [WISPA] Alvarion VL Users
Having been a VL user since 2003, I can say it performs well in noisy enviorments with nothing more than 90 degree sectors, noisy areas with 120's, not so much. It performs amazing in rural applications with little noise. Also to repeat what Tom said, they are extremely clean and efficient with spectrum. However, they are very expensive and I wish they had GPS sync :( They didn't release GPC sync with there 900mhz VL line either which was a shame as well. Thanks, Cameron Kilton Project Manager Midcoast Internet Solutions http://www.midcoast.com c...@midcoast.com (207) 594-8277 x 108 On 4/26/2010 12:03 PM, Tom DeReggi wrote: > A have to say, some pf those past comments are a bit unfair, and not > relevent to the question asked. > > Maybe because Patrick is now at Aperto, and not here to defend Alvarion? :-) > > We dont deploy Alvarion, but we have used it in some cases. It simply is not > cost justified for us, since how we deploy. We generally have a very low CPE > count per AP, and Alvarion has a heavy AP price, and we serve mostly > Multi-tenant buildings, requiring high capacity CPE, and Alvarion charges > more for allowing full throughput both at the AP and CPE. Licensing cost for > full featured CPE/AP is expensive, no doubt. We can talk all day about why > it might not be cost justified. Or maybe how it lacks on-the-fly flexibilty > being single pol, single band. > > But saying that the gear does not perform, (or worse in noise compared to > products of similar class) simply is not true. Alvarion was one of the first > that actually developed firmware optimized for quality VOIP. Their adaptive > modulation routines work well. There ability to scan at CPE for noise > remotely is cool. There insightfulness to have exterior LED represent SNR > instead of RSSI was ingenious. They have super clean RF > transmitters/receivers, because they are intentionally single band radios. > It might even have better embedded filters? Alvarion uses the same Atheros > OFDM RF Chip as any other Atheros radio, how in the world can one justify > saying that Alvarion has worse RF performance in noise? It all boils down to > SNR for everybody. Alvarion does however have enhancements, to make it one > better than gear that uses just a basic Atheros chip. And Alvarion is > designed to enable operators to select antennas of choice to enable full > allowable power within the band. > > Many successful large scale residential projects are based on Alvarion VL, > because it can scale with large CPE relatively well. > > My point here is it important to compare apples to apples. Sure, Canopy, > Trango, and even Proxim DSSS systems with Circular can handle noise much > much better than OFDM and QAM modulation type gear can. Its reasons why we > still use Trango in many of our noisy PtMP locations. But comparing > Alvarion VL to other OFDM products, I believe Alvarion compares very well. > I'd argue that Alvarion is probably one of the best perfoming radios still > based on CDMA/CA, because of their proprietary MAC. Although I agree there > are advantages to Polling which Is why we primarilly use polling systems, > there are many advantages to CDMA/CA also, and it should not be discounted > because of that, unless its determined a Polling system is actually needed > for the application. > > Saying Alvarion VL has nothing much over WIFI, is a croc, and simply not > true. We haven't even discussed the rock solid hardware, such as thick > heatsink cases, etc. > > Tom DeReggi > RapidDSL& Wireless, Inc > IntAirNet- Fixed Wireless Broadband > > > - Original Message - > From: "Brad Belton" > To: "'WISPA General List'" > Sent: Saturday, April 24, 2010 8:05 PM > Subject: Re: [WISPA] Alvarion VL Users > > > 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 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
Re: [WISPA] Alvarion VL Users
A have to say, some pf those past comments are a bit unfair, and not relevent to the question asked. Maybe because Patrick is now at Aperto, and not here to defend Alvarion? :-) We dont deploy Alvarion, but we have used it in some cases. It simply is not cost justified for us, since how we deploy. We generally have a very low CPE count per AP, and Alvarion has a heavy AP price, and we serve mostly Multi-tenant buildings, requiring high capacity CPE, and Alvarion charges more for allowing full throughput both at the AP and CPE. Licensing cost for full featured CPE/AP is expensive, no doubt. We can talk all day about why it might not be cost justified. Or maybe how it lacks on-the-fly flexibilty being single pol, single band. But saying that the gear does not perform, (or worse in noise compared to products of similar class) simply is not true. Alvarion was one of the first that actually developed firmware optimized for quality VOIP. Their adaptive modulation routines work well. There ability to scan at CPE for noise remotely is cool. There insightfulness to have exterior LED represent SNR instead of RSSI was ingenious. They have super clean RF transmitters/receivers, because they are intentionally single band radios. It might even have better embedded filters? Alvarion uses the same Atheros OFDM RF Chip as any other Atheros radio, how in the world can one justify saying that Alvarion has worse RF performance in noise? It all boils down to SNR for everybody. Alvarion does however have enhancements, to make it one better than gear that uses just a basic Atheros chip. And Alvarion is designed to enable operators to select antennas of choice to enable full allowable power within the band. Many successful large scale residential projects are based on Alvarion VL, because it can scale with large CPE relatively well. My point here is it important to compare apples to apples. Sure, Canopy, Trango, and even Proxim DSSS systems with Circular can handle noise much much better than OFDM and QAM modulation type gear can. Its reasons why we still use Trango in many of our noisy PtMP locations. But comparing Alvarion VL to other OFDM products, I believe Alvarion compares very well. I'd argue that Alvarion is probably one of the best perfoming radios still based on CDMA/CA, because of their proprietary MAC. Although I agree there are advantages to Polling which Is why we primarilly use polling systems, there are many advantages to CDMA/CA also, and it should not be discounted because of that, unless its determined a Polling system is actually needed for the application. Saying Alvarion VL has nothing much over WIFI, is a croc, and simply not true. We haven't even discussed the rock solid hardware, such as thick heatsink cases, etc. Tom DeReggi RapidDSL & Wireless, Inc IntAirNet- Fixed Wireless Broadband - Original Message - From: "Brad Belton" To: "'WISPA General List'" Sent: Saturday, April 24, 2010 8:05 PM Subject: Re: [WISPA] Alvarion VL Users 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 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/
Re: [WISPA] Alvarion VL Users
VL has been a love/hate for us. When it works, it works great. However, it has several serious flaws. It has the same associate/dis-associate issue seen with other WDS implementations. If a weak client continues to associate/dis-associate, packet loss to all radios on the sector happens and can even shut down the AP for long periods of time. No easy way to see on the AP the number of times this happens either. SNR is completely worthless for determining anything. Some of our worst channels are ones where clients show fantastic SNR. And, as said before, noise is a killer. It's very difficult to co-locate APs on the same tower even with 20 MHz of separation. Now that Canopy 430 is out, we'll be ditching Alvarion and moving to Canopy. Canopy has been the best product we have used and the software continues to mature and while bug fixes are slow to be released, they typically are addresses. 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/
Re: [WISPA] Alvarion VL Users
Hello Adam, Good information to know. Yes, our experience with VL was some time ago...well before 5.5.26 for sure! I can't believe I'm saying this, but we may have an application for a VL deployment in a desert at some point. We're looking for a PtMP system with AES256 and I'm pretty sure VL has it. Not sure if there are any other PtMP products out there with AES256, but if a vendor reads this and has such a critter feel free to send me information off list. Best, Brad -Original Message- From: wireless-boun...@wispa.org [mailto:wireless-boun...@wispa.org] On Behalf Of Adam Kennedy Sent: Saturday, April 24, 2010 11:40 PM To: WISPA General List Subject: Re: [WISPA] Alvarion VL Users 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" 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 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/ 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/
Re: [WISPA] Alvarion VL Users
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" 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 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/
Re: [WISPA] Alvarion VL Users
The VL series is one of Alvarion¹s better lines. In a previous role I was part of a team which managed Alvarion VL 5.8 Backhauls. I was impressed. Overpriced IMHO but since we had them I was happy with their performance. -- Justin Wilson http://www.mtin.net/blog Wisp Consulting Tower Climbing Network Support From: Charles Wu Reply-To: WISPA General List Date: Sat, 24 Apr 2010 18:55:51 -0500 To: WISPA General List Subject: [WISPA] Alvarion VL Users Any Alvarion VL users out there? We're inheriting several towers, and curious about performance -- in particular with voice and contention -Charles 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/
Re: [WISPA] Alvarion VL Users
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 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/
Re: [WISPA] Alvarion VL Users
On 24 April 2010 19:55, Charles Wu 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] Alvarion VL Users
Any Alvarion VL users out there? We're inheriting several towers, and curious about performance -- in particular with voice and contention -Charles 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/
