I suppose we have between 50 and 150 machines for every 2Mb/s link, with 650-700 ish machines in total. Staff and students are starting to bring in their own equipment, so this number is increasing very quickly (about 80 staff/student owned machines so far this term) The are 14 separate VLANS that all connect to 4x 5500 gigabit switches (link by 46GB/s cables, in an XRN stack). The core then plugs into wireless controller @4GB/s and bladecentre @8GB/s. I would be happier if we had fewer cabinets with faster uplinks, it makes things much easier to manage.
Seriously how many client pcs do you have in each catchment area, what is the backhaul link and what are they being used for that maxes them continuously.