[c-nsp] vlan configuration for video system

[Dan]

Hello

We are implementing a video conferencing system on our system and I was 
wondering  if anyone had recommendations for how to setup the vlan's for 
data/video/voice.

We currently have one 3560 in each of the buildings and 2-10 2960's 
behind the 3560.  All of the buildings are connected via wireless bridges.

Should I create a separate vlan for voice, video, data, and management 
in each building?

If I do create a separate vlan for each piece, how do the switches know 
how to put say a video device on the video vlan when its connected on 
the switch?

If there are any other suggestions please let me know as I'm open to any 
options so I can make this system easy to manage and work well.

Thanks,
Dan.