This is an interesting topic...
I have ask this question but with no answer...
The thing is that i would like to know the recommended limit users in one vlan with instatn APs with some features on.
For example now they support broadcast and multicast filtering... like you said it may let you scale to /23 but is recommended by aruba? what does aruba recommened in this matter? i have no idea... The thing is that we would not want to test this witha client... thats why im asking.
It would be really nice that someone of aruba could give us their opinion about this... i mean it is really important for us to know the recommendation of aruba in this matter... for example i got many cases in which the possible client find the controller based too expensive but stilll have over 700 users now can i go with instatn with them? well i dont know if with broadcast and multicast drop feature will be enough to maintein the performance of the network in a good shape.
Now i have though that if the client is using 802.1x i could be using vlan user feature... in which it will dynamically place the user in a vlan depending on which group he is. This will let me create different groups in AD and let me have small subnets of /24 this way... but now is this is recommeneded? well no idea...
a VRD for instant will be really useful :)
Actually all VRD are really useful as they let know what aruba recommends which is really important matter! it would be nice to have a VRD of instant!