[Klug-general] Limits on number of 802.11x clients?
Kevin Groves
kgroves at cix.co.uk
Fri Jun 6 17:56:49 UTC 2014
I would agree too many for one AP with all the hand shaking and such.
Any possibility of a few more and making a mesh?
Kev,
On 06/06/14 17:09, Karl Buckland wrote:
> Hi Alan,
>
> Regardless of the issue of devices getting registered, I would have
> thought that 60 devices would be completely oversubscribing a wireless
> access point. On a 54 mbps access point in perfect conditions, those
> 60 clients would get about 900kbps each. Then you have TCP overheads
> on top of that. Even with a faster access point, the timing
> interference between all those radios trying to broadcast at once
> becomes a big problem. And that's with perfect conditions. More than
> likely, it's much worse than that. Are the devices that are
> registering working properly? I would've thought they would be
> struggling and you'd need at least two access point on different channels.
>
> Sorry I know that isn't answering your questions directly, but I
> looked into something similar previously and thought this might help.
>
> Karl
>
>
>
> On 6 June 2014 16:58, Alan <alan at hipnosi.org
> <mailto:alan at hipnosi.org>> wrote:
>
> Hi all,
>
> Running into a weird problem trying to use about 60 wireless
> devices simultaneously on a single ESSID and I wonder if anyone
> has some experience of any issues or limitations in this regard..
>
> I am helping out a local cell of coderdojo.com
> <http://coderdojo.com>, as soon as more than 20 or so devices
> connect to their wireless, no more new devices can associate (even
> if existing devices get off).
>
> Initially I thought it was a problem with the wireless AP on the
> cheap ADSL router, so I set up a separate wireless AP relaying the
> DHCP from the router (yes the router has a large pool -
> 192.168.1.5-250). Still during the next session the same issue again.
>
> Following that I installed a Debian box running dnsmasq as a DHCP
> server and NAT routing traffic on the AP to the ADSL router - what
> do you know, same problem!
>
> The core issue is the inability of large numbers of devices to
> associate with the wireless AP (have tried a few different
> consumer wireless AP's by now - all with same symptoms)
>
> The next dojo is tomorrow and I will be there to diagnose onsite
> this time, but if anybody has any heads-ups about large wireless
> networks I'd really appreciate the info.
>
> Alan
>
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