We are choosing an 802.11n vendor (considering two vendors primarily) for a deployment in a new building this summer (and further deployment in the years to come) and the biggest point of discussion at this time is the uplink capabilities of the controllers. Both controllers are chassis based. Vendor A is releasing hardware soon to do 4 Gbps per module and each module handles 200 APs. Vendor B has had hardware around for a while that can do 20 Gbps per module and each module can handle 512 APs. In both cases, we are assuming all wireless traffic tunnels back to the controller. Our current setup is 100-130 APs (a/b/g) per 1 Gbps controller uplink and we've had no problems and haven't come close to using up the uplink bandwidth. My questions are: What kind of bandwidth needs are you seeing in real life for wireless (a/b/g or n)? Has anyone rejected an 802.11n vendor because of controller bandwidth limitations? Any other helpful thoughts on this topic? Feel free to contact me off list if you want to share specifics about a vendor. Nathan Nathan P. Hay Network Engineer Computer Services Cedarville University www.cedarville.edu ( http://www.cedarville.edu/ )
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