spend_day Posted July 9, 2012 Posted July 9, 2012 Hey, Just wondering from those with enterprise level WLAN's setup in there schools in the real world how many client could reasonably connect to an access point. for example how many for a ruckus 7962 or equivalent. Usage will likely be staff BYOD and student laptops (school owned SEN/EAL) access to the internet/possibly the network. Not whole rooms. Sorry for the lack of details on usage but we've not had any meetings about requirements yet.
teklogic Posted July 9, 2012 Posted July 9, 2012 I think a lot of the limit relies on your backbone, I have a over stretched 1Gb backbone (soon to be a 20gb), we notice a real performance hit around the 20 laptop mark. I am using HP MSM442 (i think or 422). 1
m25man Posted July 9, 2012 Posted July 9, 2012 It's entirely dependent on the band and the mode you are using less the overhead for management and encryption. Wifi is not a limitless medium, there are only so many conversations you can fit on a single cycle and only so many time slots available. You will run out of available wifi spectrum on b/g/n long before reaching your backbone limits... A single stream at g is 54mbps the n standard pushes this to 64 and that is air speed not wired. Using multiple streams and channels you can reach 300 Mbps but even this falls far short of your gigabit backhaul. Surfing the web with twitter and other light weight apps we have had over 80 clients on a Unifi point without any trouble but with a you tube stream wanting around 1mb, 10 or so clients with different sessions will quickly start to tax your wifi. Dual band dual radio can accommodate 20+ users with most I devices steering towards 5Ghz if it's available. 802.11ac will see throughput reaching close to 800 Mbps but this will not be seen in enterprise systems until 2013 and most existing kit is not retrofitable so don't be running away with the idea that anything you buy this year can be upgraded, it's already obsolete its just a question of how long you can make it last. A few years ago it was all about dragging user profiles and data over 11mb wifi, now it all about streaming and BYOD over 180mb+ Everything has changed and it's your Internet connection that is likely to get maxed out long before your LAN. 2
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