You are absolutely right, it is good for a conference... but when you work on
a big building you will have constantly users that says "I lost connection"
when moving to somewhere else and that is because some devices does not know
that when signal is out must re-scan other channels and pay attention to same
id, just update the list and show others and keep showing as connected the
previous AP with low signal.. trust me, happened with at least 5 completeley
different devices, atheros, intel, broadcom, all lastest Windows and driver.
other devices works just fine, and happened the same on some cheap samsung
well, when the conference covers around 100,000 sq ft of buildings, it's big
enough to run into any problem.
If you try to run everything on one channel, it just is not going to work.
About separate SSID, happened to me too have devices, even with latest MacBook
Pro (supposed to be state-of-the-art wifi) to keep trying to use same band
instead of the other, and has no way to chose which one neither, and not so
intelligent to detect when is needed to chose one or another depending on
the devices have no idea of what congestion is, they connect to the strongest
signal that they have, and frequently manage the two bands separately, so they
would not jump from one band to another easily. In any case, you need to have
complete coverage of the facility with each band. The 2.4GHz band just doesn't
have enough channels to do this effectively, so you really want to have anyone
who can use the 5 GHz band.
proprietary, controller based systems do this by having the controller detect
that they device showed up on the 5GHz band and then ignore any requests it
makes to the 2.4GHz band. This is rather inefficient, and using appropriate
social engineering when naming the SSIDs solves this problem nicely (scale for
5GHz vs scale-slow for 2.4GHz for example)
When deploying AP for companies you need to have in mind that you will have a
balance between old laptops 2.4, new laptops 5ghz capable, and a lot of BYOD
devices of all kind and the ONLY thing that you need to achieve is get secure,
get it working, get it easier to understand and use for users and reduce
possible problems to minimum...
actually, I'd argue that in a business environment, you have a lot more control
over the devices than at a hobbiest conference (I was still running into 802.11b
only devices in 2014 for example)
Thats because I do all this in that way... works for me!
You are very close to correct, but if you try to use a single channel for
everything, the entire network is going to collapse at very low traffic levels.
That's the reason I spoke up
One other thing I didn't mention in the prior e-mail, turn the power level on
the APs down as far as you can to get coverage of the area to minimize
interference between devices using different APs on the same channel, you want
to minimize the footprint of each AP so that there is as little interference
between APs on the same channel as possible.