RE: Wireless Recommendations
Just be careful with Xirrus. A little known secret is that only 3 of those radios can be running in the 2.4ghz band at any time. Mario Eirea IT Department Charter School IT 20803 Johnson Street Pembroke Pines, FL 33029 Ph: 954-435-7827 Cell: 305-742-6524 Fax: 954-442-1762 From: Jonathan Lassoff [j...@thejof.com] Sent: Tuesday, February 07, 2012 2:50 PM To: Arzhel Younsi Cc: Mario Eirea; nanog@nanog.org Subject: Re: Wireless Recommendations On Tue, Feb 7, 2012 at 11:19 AM, Arzhel Younsi xio...@gmail.com wrote: Xirrus say that they can support 640 clients with this device: http://www.xirrus.com/Products/Wireless-Arrays/XR-Series/XR-4000-Series I heard about it a couple weeks ago, didn't try it yet. That's a pretty neat product -- it seems like it takes care of spectrally isolating clients by utilizing 4 - 8 radios per AP-box and 8 - 24 directional sector antennas. I feel like this addresses the suggestions that I and others gave to utilize more APs rather than a big central one, but it just packages it all into one box with many antennas. Cheers, jof
Re: Wireless Recommendations
Is that because of Channel Spacing ? or some other reason ? Regards. Faisal Imtiaz Snappy Internet Telecom 7266 SW 48 Street Miami, Fl 33155 Tel: 305 663 5518 x 232 Helpdesk: 305 663 5518 option 2 Email: supp...@snappydsl.net On 2/15/2012 7:00 PM, Mario Eirea wrote: Just be careful with Xirrus. A little known secret is that only 3 of those radios can be running in the 2.4ghz band at any time. Mario Eirea IT Department Charter School IT 20803 Johnson Street Pembroke Pines, FL 33029 Ph: 954-435-7827 Cell: 305-742-6524 Fax: 954-442-1762 From: Jonathan Lassoff [j...@thejof.com] Sent: Tuesday, February 07, 2012 2:50 PM To: Arzhel Younsi Cc: Mario Eirea; nanog@nanog.org Subject: Re: Wireless Recommendations On Tue, Feb 7, 2012 at 11:19 AM, Arzhel Younsixio...@gmail.com wrote: Xirrus say that they can support 640 clients with this device: http://www.xirrus.com/Products/Wireless-Arrays/XR-Series/XR-4000-Series I heard about it a couple weeks ago, didn't try it yet. That's a pretty neat product -- it seems like it takes care of spectrally isolating clients by utilizing 4 - 8 radios per AP-box and 8 - 24 directional sector antennas. I feel like this addresses the suggestions that I and others gave to utilize more APs rather than a big central one, but it just packages it all into one box with many antennas. Cheers, jof
Re: Wireless Recommendations
On Wed, Feb 15, 2012 at 7:50 PM, Faisal Imtiaz fai...@snappydsl.net wrote: Is that because of Channel Spacing ? or some other reason ? I would presume channel spacing. In FCC-land, there are only 3 non-overlapping 20 Mhz bandwidths available. --j
RE: Wireless Recommendations
This is my guess too, i guess there is some bleed over from their antenna arrays. Mario Eirea IT Department Charter School IT 20803 Johnson Street Pembroke Pines, FL 33029 Ph: 954-435-7827 Cell: 305-742-6524 Fax: 954-442-1762 From: Jonathan Lassoff [j...@thejof.com] Sent: Wednesday, February 15, 2012 10:54 PM To: fai...@snappydsl.net Cc: nanog@nanog.org Subject: Re: Wireless Recommendations On Wed, Feb 15, 2012 at 7:50 PM, Faisal Imtiaz fai...@snappydsl.net wrote: Is that because of Channel Spacing ? or some other reason ? I would presume channel spacing. In FCC-land, there are only 3 non-overlapping 20 Mhz bandwidths available. --j
Re: Wireless Recommendations
On 2/15/12 20:14 , Mario Eirea wrote: This is my guess too, i guess there is some bleed over from their antenna arrays. Even the most directional sector antenna in the world has a back lobe... and there there's the clients... there's no magic bullet you simply can't do it all in one ap with the space available. Mario Eirea IT Department Charter School IT 20803 Johnson Street Pembroke Pines, FL 33029 Ph: 954-435-7827 Cell: 305-742-6524 Fax: 954-442-1762 From: Jonathan Lassoff [j...@thejof.com] Sent: Wednesday, February 15, 2012 10:54 PM To: fai...@snappydsl.net Cc: nanog@nanog.org Subject: Re: Wireless Recommendations On Wed, Feb 15, 2012 at 7:50 PM, Faisal Imtiaz fai...@snappydsl.net wrote: Is that because of Channel Spacing ? or some other reason ? I would presume channel spacing. In FCC-land, there are only 3 non-overlapping 20 Mhz bandwidths available. --j
Re: Wireless Recommendations
On Wed, Feb 15, 2012 at 8:41 PM, Joel jaeggli joe...@bogus.com wrote: On 2/15/12 20:14 , Mario Eirea wrote: This is my guess too, i guess there is some bleed over from their antenna arrays. Even the most directional sector antenna in the world has a back lobe... and there there's the clients... Agreed. There is rarely a thing as a perfectly-directional antenna (not without a lot of shielding, I would presume). Since I would presume that all the radios are controlled by the same host, perhaps it could coordinate the 802.11 DCF and sequence CTS frames so that the various client and AP radios remain as spectrally orthogonal as possible. There's not much you can do about the clients transmitting RTSes, but it can be predicted to a certain extent. there's no magic bullet you simply can't do it all in one ap with the space available. Agreed. More, lower-power APs means better spectral efficiency and overall resilience. --j
Re: Wireless Recommendations
Xirrus say that they can support 640 clients with this device: http://www.xirrus.com/Products/Wireless-Arrays/XR-Series/XR-4000-Series I heard about it a couple weeks ago, didn't try it yet. On Wed, Feb 1, 2012 at 02:09, Mario Eirea mei...@charterschoolit.com wrote: Aruba AP 105. This version comes with a virtual controller that can manage 16 APs without the need of an additional controller. For high capacity areas I would go with Ruckus. -Mario Eirea On Jan 31, 2012, at 11:46 AM, Joel jaeggli joe...@bogus.com wrote: On 1/30/12 12:46 , Jim Gonzalez wrote: Hi, I am looking for a Wireless bridge or Router that will support 600 wireless clients concurrently (mostly cell phones). I need it for a proof of concept. an aruba controller and 8 dual radio aps. Thanks in advance Jim - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1416 / Virus Database: 2109/4778 - Release Date: 01/31/12
Re: Wireless Recommendations
On Tue, Feb 7, 2012 at 11:19 AM, Arzhel Younsi xio...@gmail.com wrote: Xirrus say that they can support 640 clients with this device: http://www.xirrus.com/Products/Wireless-Arrays/XR-Series/XR-4000-Series I heard about it a couple weeks ago, didn't try it yet. That's a pretty neat product -- it seems like it takes care of spectrally isolating clients by utilizing 4 - 8 radios per AP-box and 8 - 24 directional sector antennas. I feel like this addresses the suggestions that I and others gave to utilize more APs rather than a big central one, but it just packages it all into one box with many antennas. Cheers, jof
Re: Wireless Recommendations
On 1/30/12 12:46 , Jim Gonzalez wrote: Hi, I am looking for a Wireless bridge or Router that will support 600 wireless clients concurrently (mostly cell phones). I need it for a proof of concept. an aruba controller and 8 dual radio aps. Thanks in advance Jim
Re: Wireless Recommendations
Hi, I do not know all the details, but the high school i graduated from recently implemented an Aruba system. From what i hear, it has never worked as designed and the IT dept there says its hard to manage. I was told the school got it since it was the cheapest. -Grant On Tue, Jan 31, 2012 at 10:45 AM, Joel jaeggli joe...@bogus.com wrote: On 1/30/12 12:46 , Jim Gonzalez wrote: Hi, I am looking for a Wireless bridge or Router that will support 600 wireless clients concurrently (mostly cell phones). I need it for a proof of concept. an aruba controller and 8 dual radio aps. Thanks in advance Jim
Re: Wireless Recommendations
Aruba AP 105. This version comes with a virtual controller that can manage 16 APs without the need of an additional controller. For high capacity areas I would go with Ruckus. -Mario Eirea On Jan 31, 2012, at 11:46 AM, Joel jaeggli joe...@bogus.com wrote: On 1/30/12 12:46 , Jim Gonzalez wrote: Hi, I am looking for a Wireless bridge or Router that will support 600 wireless clients concurrently (mostly cell phones). I need it for a proof of concept. an aruba controller and 8 dual radio aps. Thanks in advance Jim - No virus found in this message. Checked by AVG - www.avg.com Version: 10.0.1416 / Virus Database: 2109/4778 - Release Date: 01/31/12
Re: Wireless Recommendations
On Mon, Jan 30, 2012 at 12:46 PM, Jim Gonzalez j...@impactbusiness.com wrote: Hi, I am looking for a Wireless bridge or Router that will support 600 wireless clients concurrently (mostly cell phones). I need it for a proof of concept. I've had some great luck with a variety of vendors, though never with this many clients on one AP. For a stable 802.11 stack, I've found Cisco AP1142N's to be great. That said, I'm not sure what you're trying to do here, but I think you'll be disappointed with any AP with 600 *active* stations associated to it. No AP can work around the congestive collapse of hundreds of stations all transmitting RTS frames at once. If you can split up your many stations across a swath of APs, bridging down to a couple L2 Ethernet LANs, I think you'll get something much more scalable. Cheers, jof
Re: Wireless Recommendations
On Mon, 30 Jan 2012, Jonathan Lassoff wrote: That said, I'm not sure what you're trying to do here, but I think you'll be disappointed with any AP with 600 *active* stations associated to it. No AP can work around the congestive collapse of hundreds of stations all transmitting RTS frames at once. unless, of course, that's the concept you are trying to prove...? :) -- david raistrickhttp://www.netmeister.org/news/learn2quote.html dr...@icantclick.org http://www.expita.com/nomime.html
