My company has 5 locations, including our central main office. In active directory sites and services, I see no sites created except for the original default site. Each location has a domain controller with global catalog service running. We are having dns and replication issues. I need to setup the sites and put each respective domain controller/subnet inside.
My question is this: What should my process be? I see documentation on setting them up from scratch, but these locations are already running and have been for years. Will I have to recreate the global catalog or reconfigure dns? Any help will be greatly appreciated.