Setting up a small / isolated network inside LAN

[Klassman]

I have been assigned to setup a small private (isolated) network within the current network where the co-workers (10 PCs) can access a DC (Win server 2012) for DHCP/ DNS. We have a Cisco router a cisco switch and a wireless AP/ router in the rack available. Currently the PCs are getting access to internet from a wireless router/ AP (different from the one on the rack).

Q: What is the easiest way to configure this network so the PCs can get their DNS / DHCP info from the domain controller? Does the DC have to be between the switch and the router or it should be connected to the switch port?
Thanks for all help here

 

[kanewolf]

What are you trying to isolate from what?

 

[Klassman]

Basically a private network within a LAN area where I can setup a DC which will provide DHCP & DNS services to the hosts in the private network.

 

[kanewolf]

Get a separate switch. Air Gap solves the problem. Not sure what you are looking for .... VLANs?