[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
>
>     _______________________________________________
>     Kent mailing list
>     Kent at mailman.lug.org.uk <mailto:Kent at mailman.lug.org.uk>
>     https://mailman.lug.org.uk/mailman/listinfo/kent
>
>
>
>
> _______________________________________________
> Kent mailing list
> Kent at mailman.lug.org.uk
> https://mailman.lug.org.uk/mailman/listinfo/kent

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.lug.org.uk/pipermail/kent/attachments/20140606/a603555a/attachment.html>


More information about the Kent mailing list