I have two domains, a root domain (yourdomain.com) and tree domain (ourtreedomain.com) in a single forest in my test environment. I want to migrate objects from tree domain to root domain. For this, it is necessary that the domains should be accessible from both sides. But I am unable to access tree domain from root domain (However, I can access root domain from tree domain).
What could be the issue? A tree-root trust is automatically established during deployment and I can see the tree domain (ourtreedomain.com) in domain and trust snap-in of yourdomain.com.
Earlier in my setup, there was no issue between child domain and root domain in same forest. Attached figures will make you clear about how both domains are deployed in forest.
A read-only domain controller (RODC) is an Active Directory (AD) feature first introduced in Windows Server 2008. In this article, I explain how to deploy an RODC on Windows Server 2016 using PowerShell.