Wireless Recommendations

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.

Thanks in advance

Jim

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

unless, of course, that's the concept you are trying to prove...? :slight_smile:

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.

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

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

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

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

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: Support@Snappydsl.net

I would presume channel spacing. In FCC-land, there are only 3
non-overlapping 20 Mhz bandwidths available.

--j

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

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.

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