I have successfully setup a Router on a Stick and have two subnets:
My Router's sub interfaces are set to 10.0.0.1 and 10.1.0.1, respectively.
My primary domain controller, running Windows Server 2008, is located at 10.0.0.3. My Read-Only domain controller, also running Win 2008, is located at 10.1.0.3.
Additionally, I have 3 workstations (Windows XP) on this lab network. 1 workstation is on the 10.0/16 network, and two of them are on the 10.1/16 network.
I also have two sites in this Active Directory forest, and the site is paired with the subnet and the domain controller. I have a Group for each site, and have different users added to different groups, and have ensured that the group assigned to the 10.1/16 network passwords are "allowed" to be cached by the RODC.
My Goal: To replicate the 10.1/16 site's users (and eventually, folders, files, etc...) to the Read-Only DC on 10.1.0.3, so that the RODC handles user authentication if the primary DC becomes unavailable.
I'm currently able to authenticate all workstations to the Primary Domain Controller without a problem. I have also verified that my 10.1/16 users' accounts have been cached on the RODC at 10.1.0.3.
However, when I unplug the Primary Domain Controller from the network, and then try to login to a workstation on the 10.1 network as a user that has never authenticated to that particular PC (but whose accounts ARE cached on the RODC), the login fails because the Domain is Not Available.
Obviously I haven't met my goal, and I'm trying to figure out why. Any leads or suggestions?