How to design topologies for SSID for 20.000 users?

[Ilya_Semenov]

Hello, everybody!

I am going to setup Wireless infrastructure for a big University. I will have Identifi with V2110 controller and 3825i APs. There are 12.000 students and about 8000 employees, who share same internal resouces. They have to use a single SSID.

How many topologies / (networks) should I create to support such amount of users?

I think that creating single /18 net for 8190 host is not a good idea because of broadcasts... Am I right?

I've heard that I can unite several VLANs under one SSID. Is this a solution for me? How will seamless roaming work in this case?

The 2nd question is how can I isolate users from each other but allow them to user internal resources?

Please, share your ideas!

Many thanks for your advices,

Ilya

[Ilya_Semenov]

Thanks, Ronald!

Is there any recommened amount of host per VLAN for such topology as mine? In other words, how many VLANs should I create? I think about 8 VLANs for /22 net inside each.

[Ronald_Dvorak]

I hope you are aware that the V2110 (large) could only support 4k users per controller.

[Ilya_Semenov]

Sure. I will have pair of V2110. The worse thing is it gives 4k only under VMware, which I really hate...( Do know how to get 4k under Hyper-V?